Quantifying Plant Water Use in the Native Coteau Rangelands of North Dakota


 

Table.1 Particle size distributions, organic matter (OM, dry matter basis), bulk density (BD) and saturated hydraulic conductivity (Ksat) for soil samples collected at the drought and grazing intensity study site at the CGREC.

Site

Depth

(in)

Sand

(2000-50 microns)

(%)

Silt

(50-2 microns)

(%)

Clay

(<2 microns)

(%)

OM

(%)

BD

g cm-3

Ksat

cm min-1

Non-grazed

Non-grazed

Non-grazed

Non-grazed

Non-grazed

Non-grazed

Non-grazed

Non-grazed

Moderate

Moderate

Extreme

Extreme

0-6

6-12

12-18

18-24

24-30

30-36

36-48

48-60

0-6

30-36

0-6

30-36

36.6

38.4

39.3

43.5

49.5

45.4

42.1

40.9

25.9

21.3

32.0

19.3

35.2

32.6

32.5

28.8

26.8

27.1

31.2

32.0

32.4

37.5

33.3

35.1

27.6

29.0

28.2

27.7

23.7

27.5

26.7

27.1

41.7

41.2

34.7

45.6

6.9

3.2

2.2

1.4

1.0

0.8

0.8

0.7

5.2

1.4

7.4

1.1

0.986

1.330

1.322

1.365

1.738

1.454

1.530

1.551

0.830*

1.284

0.950

1.252

0.05300

  

  

  

  

0.00019

  

  

0.16900

0.00012

0.05500

0.00007

*Field measured value is 0.569, however, in the laboratory efforts failed to pack this sample at its original density for hydraulic conductivity measurement. Eventually, 0.830 was used instead.

 
Table of contents | Introduction| Methods | Data Analysis and Modeling | Results

  
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