Reforestation multi-criteria evaluation: a GIS environmental indirect approach

Data analysis (cont.)

Soil

Soil data were quantified and ranked from soil descriptions to a tree species suitability index. This ranking (as shown below), from 0 to 10 (1 being the less suitable and 10 being the most suitable), was based on the critical attributes of the tree species. This quantification was done in MS Excel.

Count

Soil description (Valentine et al., 1987)

Pine suitability (/10)

Spruce suitability (/10)

1

Big Bar Association (BB)

"The Big Bar Association consists of gravelly coarse-loamy morainal soils, with a thin veneer of eolian fine Sand, and they have very gentle to gentle slopes (2% to 9%). Their elevation range is from 400 m to 1000. They are some of the highest grasslands in the PPBG biogeoclimatic zone and extend into the IDFb subzone. Species include bluebunch wheatgrass, and Sandberg's and Kentucky bluegrass. There are very few trees, mostly Douglas fir. Many places are heavily overgrazed. Big Bar soils are well drained, very friable, and moderately pervious, with a semiarid moisture regime. They are classified as Orthic Dark Brown Chernozems and have considerable organic matter in the surface horizon and calcareous parent material. Volcanic ash is sometimes present in the Upper horizons. "

5

4

2

Big Creek Association (BC)

"The Big Creek Association consists of gravelly, sandy soils formed on fluvial sediments. Their topography is very gently sloping (2% to 5%) and their elevation range is limited (1050 m to 1200 m). They are not very common, being limited to the valleys of Big Creek and Gaspard Creek, and caver only 0.1% of the total area. They are in the IDFb vegetation zone. The trees are mainly lodgepole pine and trembling aspen, with an understory of rose and pinegrass. Vegetation is, however, quite variable, as the soils have a range of textures and drainage. Big Creek are usually deep (more than 1 m>, well drained, loose, and rapidly pervious soils, with a semiarid moisture regime. They are classified as Orthic Eutric Brunisols and have slightly weathered subsurface (B) horizons and a thin surface litter layer. Along Gaspard Creek some soils are Regosols and Gleysols subject to flooding. These soils are on remnant terraces above the present river level. Their main potential is for forestry, if not too wet.

6

4

3

Borin Association (BI)

"The parent material of Borin soils is gravelly loamy glacial till, usually over 1 m deep, which often contains volcanic cinders and ash near the surface. Topography is moderate to very strongly sloping (10% to 70%) and elevation ranges from 1500 m to over 2200 m. These soils are very common, covering more than 7.8% of the four map sheets. This is one of the main soils in the mountain regions. Borin soils occur in the ESSFg subzone and the MS biogeoclimatic zone. Vegetation consists of an overstory of lodgepole pine and spruce with an understory of lupine, kinnikinnick, and aster. They are well drained, friable to firm, and rapidly pervious, and have a subhumid moisture regime. As Orthic Dystric Brunisols they have slightly weathered B horizons and acid surface horizons. In some there is a shallow organic-enriched surface horizon. "

10

3

4

Churn Creek Association (CC)

"Churn Creek are loamy soils formed on lacustrine terraces with glacifluvial deposits at depth. Their topography is complex, with very gentle to gentle (2% to 9%) slopes, and their elevation range is 450 m to 750 m. These soils are not common, covering only 0.1% of the map sheet. They are within the PPBG biogeoclimatic zone, and have similar vegetation to the Chilcotin soils. They are deep, well drained, moderately pervious, and friable. Their moisture regime is subarid. Classified as Orthic Dark Brown Chernozems, they have a surface horizon enriched with organic matter and a calcareous parent material. Appendix II contains a profile description.

4

8

5

Cone Hill Association (CE)

"These soils have formed on gravelly-coarse-loamy morainal material at the base of slopes or in shallow depressions in the plateau surface. Their topography ranges from very gently to gently sloping (0.2% to 9%) and their elevation ranges from 1500 m to 1200 m. They are not very common, covering only about 0.06% of the map sheet, mostly in the west. They are within the ESSFg and the SBSa biogeoclimatic subzones, but their vegetation reflects their wetter moisture regimes. The trees are usually lodgepole pine and hybrid white spruce, and there is an understory of equisetum and other herbs and shrubs, including red osier dogwood, willow, currant, high bush cranberry, black twinberry, and rose. Cone Hill soils are imperfectly drained, are moderately pervious, and have a humid moisture regime. Classified as Gleyed Gray Luvisols, they have a mottled subsurface horizon with a thin litter layer overlying an acid leached surface horizon. A complete description is included in Forest growth is restricted by the excess water."

6

9

6

Chilcotin Association (CI)

"These soils have formed on a veneer of coarse-loamy eolian fine sand overlying sandy skeletal glaciofluvial deposits. Their slopes are level to gently rolling (0% to 9%>, with some moderately sloping areas (9% to 15%). They caver about 0.5% of the map sheet, and occur at elevations ranging from 400 m to 750 m. Chilcotin soils are Orthic Dar-k Brown Chernozems of the grasslands in the PPBG biogeoclimatic zone. They have few or no trees. The main grass species is bluebunch wheatgrass. In areas that have been overgrazed, plants like big sage, rabbit brush, and oyster plant appear."

2

5

7

Chaunigan Lake Association (CL)

"These soils are organic. They have accumulated in depressions and valley bottoms across the plateau. Their surface is level to gently sloping. Their formation depends on local hydrology, not regional climate; therefore they carry range from 1200 m to 2000 m and are widely distributed. However, in total area they caver less than 0.8% of the map sheet. Chaunigan Lake soils are found throughout the ESSFg and the SBSa subzones, but their hydrophytic vegetation consists mainly of sedges, grasses, willow, and bog birch. A good description of their vegetation has been given by Runka and Lewis (1981). These soils are very poorly drained, are moderately pervious, and have a peraquic moisture regime. They are classified as Terric Mesisols and consist of moderately decomposed organic material overlying loamy minera1 material at a depth of less than 1.6 m. They often contain a layer of buried volcanic ash. Their wetness precludes tree growth.

5

2

8

Chasm Association (CM)

"Chasm are gravelly loamy soils formed in colluvium on steep Upper valley sides. Slopes range from moderate to very steep (10% to 100%). These soils caver about 1% of the map sheet. They are in the IDFb biogeoclimatic zone bordering the PPBG zone. Their forest is open with Douglas fir and ponderosa pine, and a ground caver that includes bluebunch wheatgrass and spruce shrubs, willow, and roses. They are moderately well drained, slightly hard, and moderately pervious, with semiarid moisture regime. They are classified as Eluviated Eutric Brunisols and have a thin litter layer, with a calcareous subsoil and parent material. In some of these soils there is a layer of volcanic ash in the Upper horizons. "

5

2

9

Courtney Association (CT)

"Courtney are loamy-skeletal soils developed on eolian fine sand overlying sandy and gravelly deposits of a varied origin. They have very gently to gently sloping (2% to 9%) complex topography and occur at elevations between 450 m and 650 m. They caver only 0.2% of the map sheet. Courtney soils are in the PPBG biogeoclimatic zone, and characteristic vegetation consists of bluebunch wheatgrass, needle grass, and big sage. In areas that have been overgrazed, big sage becomes more dominant. These soils are deep, well drained, loose, and rapidly pervious, with subarid moisture regime. Classified as Orthic Brown Chernozems, they have a light brown surface horizon enriched with organic matter and calcareous parent material. "

3

4

10

Chimney Association (CY)

"These soil have formed on deep loamy-skeletal moraine. Topography on the undulating plateau is usually complex and slopes are very gently to strongly sloping (2% to 30%), with some very strong slopes (30% to 70%). Elevation ranges from 450 m to 800 m. These soils caver about 4.0% of the map sheet, and are the dominant grasslands of the Fraser Plateau in the northeast. Although grasslands, they are within the IDFb biogeoclimatic zone. Characteristic vegetation is bluebunch wheatgrass, needlegrass, and sparse shrubs such as western snowberry and rose. The few trees are Douglas fir, lodgepole pine, or aspen. Without the periodic fires typical of grasslands many of these areas may eventually become forested. Signs of this are evident now. These soils are well drained, moderately pervious, and friable to firm, and have a subhumid moisture regime. They are classified as Orthic Dark Brown Chernozems and have a deep (greater than 10 cm> organic-enriched surface horizon, a slightly weathered subsurface (B)  horizon, and a calcareous parent material.

7

3

11

Dog Creek Association (DC)

"These are sandy-skeletal soils formed on mixed fluvial, glaciofluvial, and morainal material. Topography is usually simple, and slopes are strong to very steep on these valley sidewalls and eroded gullies along the Fraser and Chilcotin rivers. Dog Creek soils caver 4.1% of the map. They occur at elevations between 300 m and 1000 m. Dog Creek soils are in the PPBG biogeoclimatic zone. They are sparse grasslands, predominantly bluebunch wheatgrass and big sage. As with the other grassland soils of this region, big sage becomes more dominant in areas that have been overgrazed. Clumps of Douglas fir grow in the bottoms of many gullies. They are well drained, loose, and rapidly pervious, with a subarid moisture regime. They are classified as Orthic Dark Brown Chernozems. Many have been eroded on the steep slopes and have thin profiles over calcareous parent material. Some slopes are unstable and slump periodically."

3

2

12

Drummond Association (DX)

"Drummond are loamy-skeletal soils formed on moraine. Their topography is usually complex with slopes normally in the 2% to 15% range. Elevation varies from 990 m to 1500 m. Drummond soils caver 0.4% of the map sheet and occur throughout northwest in small, irregular delineations. These grassland soils extend through the IDFb and SBSa zones. They occur in drier areas: south-facing slopes or lower terraces of drier valleys. Typical vegetation is grasses (bluegrass, needlegrass, and bluebunch wheatgrass) and forbs (rabbit brush and oyster plant), with scattered invading trees. Drummond soils are deep, well drained, friable to loose, and rapidly pervious with a semiarid moisture regime. They are classified as Eluviated Dark Brown Chernozems and have surface horizons more than 10 cm deep,enriched with organic matter and calcareous parent material. "

2

5

13

Elliot Association (EL)

"The Elliot Association consists of fine-loamy soils formed on fluvial sediments. Their topography is subdued, with 0% to 5% complex slopes and an elevation range of 900 m to 1600 m. They caver only 0.5% of the map sheet but are widely distributed. Concentrated in the IDFb and SBSa biogeoclimatic zones, their vegetation of willows, sedges, and grasses reflects local wetness, not regional climate. There are few trees, and shrubs (willow and bog birch) are restricted to higher slopes. They are imperfectly drained, plastic when moist, and moderately pervious, with a perhumid moisture regime. They are classified as Carbonated Rego Humic Gleysols, with water near the surface for most of the year. They are carbonated to the surface and have a thick, organic-enriched, surface horizon."

6

3

14

Fletcher Lake Association (FL)

"Fletcher Lake soils have formed in a veneer of eolian silt over deep loamy-skeletal glaciofluvial deposits. The undulating topography gives complex slopes that are very gentle to gentle (0.2% to 9%>, whereas elevation ranges from 1150 m to 1200 m. These soils caver only 0.09% of the map. They are concentrated near Fletcher Lake north of Big Creek. They are in the Interior Douglas Fir Biogeoclimatic zone and have a tree caver of lodgepole pine, Douglas fir, and aspen with an understory pinegrass, twinflower, kinnikinnick, rose, and vetch. They are well drained, moderately pervious, and friable, with a subhumid moisture regime. Classified as Orthic Gray Luvisols, they have clay-enriched subsurface horizon, a leached surface horizon, and a thin litter layer. They often have a very distinct calcium carbonate accumulation at the contact between the eolian silt and the glaciofluvial sands and gravels. Forest productivity is moderate to low."

5

4

15

Hargreaves Association (HA)

"Hargreaves are coarse-loamy soils developed on terraced glacifluvial deposits adjacent to the Fraser and Chilcotin rivers. Topography is complex and slopes are very gentle to strong (2% to 3011, with some areas of very strong slopes (up to 70% slopes). Their elevation varies from 450 m to 1100 m. They caver about 0.2% of the map, mostly in the northeast and northwest. These soils are just within the IDFb Biogeoclimatic zone bordering the PPBG grasslands. The main tree species is Douglas fir, with a groundcover of predominantly pinegrass and bluebunch wheatgrass. Hargreaves soils are deep, well drained, friable, and rapidly pervious, with a semiarid moisture regime. They are Orthic Eutric Brunisols with a slightly weathered subsurface horizon, a surface pH above 5.5, and calcareous parent material.

5

5

16

Hawks Association (HS)

"The Hawks Association consists of sandy-skeletal soils formed on glaciofluvial sediments, often along meltwater channels. Their topography is usually complex, with very gentle to gentle slopes (2% to 9%); however, the land is terraced and some terrace edges cari slope as steeply as 70%. These soils range in elevations from 1200 m to 1500 m and caver about 1.9% of the map sheet throughout the Fraser Plateau and in some valleys of the Coast Mountains. Hawks soils occur in the IDFb and the SBSa biogeoclimatic zones. Trees on these dry soils are usually lodgepole pine, with a sparse understory of pinegrass and kinnikinnik. They are rapidly drained, friable to loose, and rapidly pervious, and have a humid to subhumid moisture regime. They are Eluviated Eutric Brunisols and have a slightly weathered subsurface (B) horizon, a thin litter layer, and calcareous parent material.  These soils have low forest productivity potential."

6

4

17

Kloakut Association (KL)

"The parent material of Kloakut soils is loamy-skeletal moraine. Topography on this plateau surface is usually complex with very gentle to strong slopes (0.5% to 30%) and elevation ranges from 1400 m to 1900 m. These soils are common, covering over 6.5% of the survey area. They are one of the main soils of the southern portion of the Fraser Plateau West. Their vegetation varies because of their extensive range, varying moisture regimes, slope position, and aspect. They extend across much of the SBS and MS zones and the ESSFg biogeoclimatic subzone. They are forested. The predominant trees vary from lodgepole pine and Douglas fir to Engelmann spruce. Kloakut soils are moderately well drained, friable, and moderately pervious, and have a humid moisture regime. They are classified as Orthic Gray Luvisols and have a clay-enriched subsurface horizon, an acid-leached surface horizon, and a thin litter layer. These soils have moderate forestry potential and some have potential."

7

5

18

New Meadow Association (NW)

"New Meadow soils are loamy fluvial deposits with a peaty surface. They are found in valley bottoms or depressions with nearly level to gentle slopes (0.5% to 5%) between 1200 m and 1500 m. These soils are the main mineral wetland of the Fraser Plateau, covering about 0.6% of the map sheet. Their vegetation reflects the wetness of the soil, not regional climate. In fact the soils occur throughout the ESSFg, SBSa, and IDFb biogeoclimatic zones. They have no trees, only sedges, grasses, mosses, bog birch, and other wetland species. They are poorly drained, very plastic when moist, and slowly pervious, and have a perhumid moisture regime. They are classified as Rego Humic Gleysols. They are mottled to the top of the minera1 horizons and some soils have a thin surface of peat."

1

1

19

Purjue Association (PU)

"These are deep sandy-skeletal fluvial deposits with variable textures. The landforms on which they occur are nearly level to moderately sloping (0.5% to 10%) terraces and fans at elevations ranging from 1200 m to 2000 m. They caver about 0.5% of the map sheet. Purjue soils occur in valley bottoms throughout in SBSa and the ESSFg biogeoclimatic subzones. On the drier fans the trees are lodgepole pines with an understory of pinegrass, forbs, and shrubs including common junipier, yellow vetch, soapberry, and cow parsnip. On lower terraces and floodplains the soils are wetter with a meadow-like vegetation of grasses and sedges. These soils are rapidly drained and rapidly pervious, with predominantly a subhumid moisture regime, but some cari be as wet as subaquic. They are classified as Orthic Regosols. There are no clear soil horizons, apart from a shallow (less than 10 cm deep) organic-enriched surface. Some soils have buried organic layers due to their fluvial mode of deposition."

8

3

20

Piltz Association (PZ)

"Piltz are coarse-loamy soils formed on moraine. Slopes range from gentle to strong (5% to 30%) at elevations between 1200 m and 2000 m. These soils are common and caver about 5.7% of the map sheet. They form the main morainal soil of the higher parts of the Fraser Plateau East, extending into the Camelsfoot Range. Piltz soils cross the IDFb, ESSFg, and SBSa biogeoclimatic zones. They are forested but the proportion of species cari vary. Trees are lodgepole pine, Douglas fir, and spruce toward the alpine. The understory is sparse with pinegrass, kinnikinnick, and rose. They are moderately well drained, slightly plastic, and moderately pervious, and have a subhumid moisture regime. They are Orthic Gray Luvisols, with a clay-enriched subsurface (B) horizon typical of this class. These soils have moderate forest productivity."

7

5

21

RO - ROCKLAND

2

0

22

Redtop Mountain Association (RT)

"The Redtop Mountain Association consists of loamy-skeletal soils developed on deep colluvial materials. Their slopes vary from moderate to very steep (10% to 100%) at elevations ranging from 1700 m to 2800 m, although they usually occur above 2000 m. They are mainly in the southwest where they are one of the most common soils. They caver about 4.4% of the total area. These are alpine soils in the AT biogeoclimatic zone. Vegetation consists of sparse trees with Krummholz form and a ground caver of common juniper, kinnikinnick, sedges, and grasses. The herb layer is very dense on moister sites. Classified as Sombric Humo-Ferric Podzols these soils are friable, well drained, and rapidly pervious, with a humid moisture regime. They have a reddish B horizon enriched with iron, aluminum, and organic matter, and a thick organic surface horizon. Deep snow is limiting elsewhere. The surface horizons are susceptible to excessive physical disturbance."

4

1

23

Shemwell Association (SH)

"Shemwell soils have a loamy-skeletal texture. They have developed on water-washed moraine. They usually have complex topography and slopes range from very gentle to very strong (2% to 50%), although most of the area is gently to moderately rolling. Their elevation is between 900 m and 1250 m. They are very common, being dominant across the northwestern map sheet. They caver 12.9% of the total area. Their vegetation is typical of dry sites within the SBSa subzone. It consists of an open forest of lodgepole pine with sparse shrubs such as willow and rose, and a ground caver of pinegrass and kinnikinnick. Shemwell soils are well drained, loose to friable, and rapidly pervious, with a subhumid moisture regime. They are classified as Orthic Gray Luvisols and have clay-enriched subsurface (B) horizons, acid-leached surface horizons, and a very thin litter layer. They have some potential for forest, but they are droughty."

6

6

24

Tyee Association (TE)

"Tyee are gravelly loamy soils formed on deep moraine. Their plateau topography has complex, very gentle to moderate slopes (2% to 15$), with some areas of strong to very strong slopes (up to 70%). Elevation varies from 1000 m to 1600 m. These soils caver about 10.5% of the map sheet. They form the main morainal soi1 of the Fraser Plateau East. Tyee soils are in the IDFb biogeoclimatic zone. They have overstory vegetation of Douglas fir, with some lodgepole pine and trembling aspen and a ground caver of kinnikinnik, rose, showy aster, indian paintbrush, peavine, and pinegrass. They are well drained , plastic, and slowly pervious, with a subhumid moisture regime. They are classified as Orthic Gray Luvisols and have a subsoil enriched with clay, an acid-leached surface horizon, calcareous parent material, and a thin litter layer. They have moderate potential for forestry."

6

5

25

Taseko Association (TK)

"Taseko are sandy and gravelly soils developed in fluvial sediments on the lowest terraces along river valleys. Their topography is mainly very gently to gently rolling (296 to 9%) with some areas of stronger slopes (up to 30%). They occur at elevations between 450 m and 750 m but caver only 0.1% of the map. These soils occur in the IDFb biogeoclimatic zone. Their vegetation is typically balsam poplar (cottonwood), aspen, willow, horsetail, and grasses. They are well drained, deep, friable, and rapidly pervious, with a semiarid moisture regime. They are Rego Dark Brown Chernozems. At their lowest points they may be flooded in the spring."

4

2

26

Toosey Association (TS)

"Toosey are gravelly coarse-loamy soils formed on fluvial sediments. They have complex topography with very gentle to gentle slopes (2% to 9%), and occur at elevations between 450 m and 750 m. They caver about 0.2% of the map, mainly in the northeast and southeast. These are grassland soils within the IDFb biogeoclimatic zone. Their vegetation is dominated by bluebunch wheatgrass and pasture wormwood. They are deep, well drained, very friable, and rapidly pervious, with a subarid moisture regime. They are classified as Orthic Dark Brown Chernozems."

6

7

27

Tete Hill Association (TT)

"The Tete Hill Association consists of loamy-skeletal soils formed on moraine that has been water washed. Their topography is very gently to sloping (2% to 30%) with some very strongly sloping (30 to 70% slopes) areas. Elevation ranges from 1500 m to 2000 m. These soils caver about 3.8% of the map sheet. They are one of the main morainal soils of the subalpine area adjacent to the Coast Mountains on the west side of the Fraser Plateau. As such they are restricted to the ESSFg biogeoclimatic subzone. Tree caver is mainly lodgepole pine, with a sparse understory of kinnikinnick and pinegrass, and other species tolerant of dry conditions. Tete Hi11 soils are well drained, loose to friable, and rapidly pervious, with a humid moisture regime. Classified as Eluviated Dystric Brunisols, they have slightly weathered subsurface (B) horizons and acid-leached surface horizons. Their surface litter layer is thin. Forest productivity is also low."

5

4

28

Vedan Meadow Association (VE)

"These soils have a sandy eolian surface over glaciofluvial gravels and sands. Their slopes are very gentle to gentle (2% to 9%). Their one delineation occurs at an elevation of 1200 m in the northeast. They represent less than 0.2% of the whole map sheet. Being in the IDFb biogeoclimatic zone, their vegetation consists of a tree caver of lodgepole pine and Douglas fir, with an understory of pinegrass and kinnikinnick. These soils are rapidly drained, loose, and rapidly pervious, and have a semiarid moisture regime. They are classified as Orthic Gray Luvisols but only a little clay has accumulated in the subsoil. They have an acid-leached surface horizon and calcareous parent material. Forest productivity is low to moderate."

6

3

29

Whiskey Creek Association (WC)

"Whiskey Creek soils are gravelly coarse-loamy and have developed on morainal materials. Topography is usually simple and slopes are moderate to very steep (10% to 100%). Elevation ranges from 750 m to 1300 m. They are quite common, covering more than 2.3% of the map. They are in the IDFb biogeoclimatic zone, between the grasslands of the lower river valley areas and the forested soils of the plateau. They have an overstory of Douglas fir, with a ground caver of pinegrass and sparse shrubs and herbs. They are well drained, deep, and moderately pervious, with a semiarid moisture regime. They are classified as Orthic Eutric Brunisols and have slightly weathered subsurface horizons and a calcareous parent material. Forest growth on these soils is sparse."

3

3

30

Williams Lake Association (WL)

"The Williams Lake Association consists of gravelly loamy soils that have formed on moraine. Their complex slopes range from very gentle to moderate (2% to 15%). They occur on the plateau just above the river valleys at elevations of 800 m to 1100 m. They caver about 6.6% of the map sheet, mainly in the northeast. They are in the IDFb biogeoclimatic zone, with a forest of Douglas fir, lodgepole pine, and trembling aspen and an understory of pinegrass kinnikinnick, and other herbs and shrubs. They are deep, are well drained, have very firm consistence, and are moderately pervious, with a subhumid moisture regime. They are classified as Orthic Gray Luvisols, with a subsoil enriched in clay, calcareous parent material, and a thin surface litter layer. A profile description is included in Appendix II. These soils are used as spring or summer range for domestic cattle. They have moderate forest productivity."

7

7

31

Willan Lake Association (WN)

"Willan Lake are loamy soils developed on moraine and colluvium derived from granitic and sedimentary bedrock. Topography is complex and slopes range from moderate to very strong (10% to 70% slopes). These soils occur at elevations of 1300 m to 1700 m. They are notcommon, covering only 0.3% of the map sheet, exclusively in the west. They are within the ESSFg and the SBSa biogeoclimatic subzones. Their vegetation is principally a tree caver of lodgepole pine and an understory of pinegrass. Other plants that occur are soapberry, rose, juniper, and grouseberry. They are shallow (less than 1 m deep), well drained, friable, and moderately pervious, with a subhumid moisture regime. They are classified as Orthic Gray Luvisols, lithic phase, with a leached surface horizon, a clay-enriched subsurface horizon, and bedrock within 1 m of the surface. Being shallow and droughty, they have only moderate to poor forestry potential."

7

6

32

Withrow Association (WT)

Withrow are gravelly loamy soils that have a silty eolian capping. They are found on higher terraces where the topography is complex and slopes are very gentle to moderate (2% to 15%). They occur between 750 m and 1100 m in elevation. They caver only 0.4% of the map, exclusively in the northeast. These soils are within the IDFb biogeoclimatic zone. They are forested with Douglas fir and lodgepole pine. The groundcover is pinegrass and sparse willow, with other herbs and shrubs. They are well drained, deep, friable, and moderately pervious, with a subhumid moisture regime. They are Eluviated Eutric Brunisols. Their potential for forestry is moderate.

7

7

33

Zenzaco Association (ZO)

These are loamy soils formed in lacustrine sediments on undulating terraces. Topography is quite variable and complex, ranging from nearly level to strongly sloping (0.5% to 30%). Elevation ranges from 650 m to 1050 m. Zenzaco soils caver only 0.2% of the map, exclusively in the northwest. They are grasslands within the IDFb biogeoclimatic zone. Characteristic vegetation includes Kentucky bluegrass, wildflax, cinquefoil, thistle, oyster plant, and snowberry. They are deep, moderately well drained, slightly hard, and moderately pervious, with a semiarid moisture regime. They are Orthic Brown Chernozems. A typical profile descriptions is included in Appendix II. These soils have moderate productivity for range, although some contain soluble salts that restrict grass growth. Gentler slopes may be irrigated for forage crops where water is available.

6

8

34

ZZ - NO DATA

1

1


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