Journal of Resources and Ecology ›› 2022, Vol. 13 ›› Issue (1): 113-119.DOI: 10.5814/j.issn.1674-764x.2022.01.013
• Restoration Ecology and Ecological Engineering • Previous Articles Next Articles
XU Zhongqi1,†,*(), ZHANG Naixuan1,†(
), WANG Ran1, YANG Xin1, SUN Shoujia2, YAN Tengfei3
Received:
2021-07-21
Accepted:
2021-10-18
Online:
2022-01-30
Published:
2022-01-08
Contact:
XU Zhongqi
About author:
XU Zhongqi, E-mail: xzq7110@163.com; ZHANG Naixuan, E-mail: 575221370@qq.com.† means that they have the same contribution to this paper.
Supported by:
XU Zhongqi, ZHANG Naixuan, WANG Ran, YANG Xin, SUN Shoujia, YAN Tengfei. The Ecological Water Demand of Different Vegetation Types in the Bashang Area, Northwest Hebei Province[J]. Journal of Resources and Ecology, 2022, 13(1): 113-119.
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URL: http://www.jorae.cn/EN/10.5814/j.issn.1674-764x.2022.01.013
Month | Forest | Shrub | Grassland |
---|---|---|---|
April | 0.5 | 0.4 | 0.3 |
May | 0.7 | 0.6 | 0.6 |
June | 0.9 | 0.8 | 0.8 |
July | 1.1 | 0.9 | 0.9 |
August | 0.8 | 0.8 | 0.8 |
September | 0.6 | 0.6 | 0.6 |
October | 0.5 | 0.5 | 0.4 |
Table 1 Vegetation coefficients (Kc) of different vegetation types
Month | Forest | Shrub | Grassland |
---|---|---|---|
April | 0.5 | 0.4 | 0.3 |
May | 0.7 | 0.6 | 0.6 |
June | 0.9 | 0.8 | 0.8 |
July | 1.1 | 0.9 | 0.9 |
August | 0.8 | 0.8 | 0.8 |
September | 0.6 | 0.6 | 0.6 |
October | 0.5 | 0.5 | 0.4 |
Month | Monthly average soil moisture (%) | Modified soil moisture coefficient KS |
---|---|---|
April | 6.58 | 0.87 |
May | 4.81 | 0.79 |
June | 3.08 | 0.68 |
July | 7.25 | 0.89 |
August | 3.69 | 0.73 |
September | 7.10 | 0.89 |
October | 8.66 | 0.93 |
Table 2 Soil moisture correction factor for each month
Month | Monthly average soil moisture (%) | Modified soil moisture coefficient KS |
---|---|---|
April | 6.58 | 0.87 |
May | 4.81 | 0.79 |
June | 3.08 | 0.68 |
July | 7.25 | 0.89 |
August | 3.69 | 0.73 |
September | 7.10 | 0.89 |
October | 8.66 | 0.93 |
Month | Forest | Shrub | Grassland | |||
---|---|---|---|---|---|---|
Actual evapotranspiration (mm) | Proportion (%) | Actual evapotranspiration (mm) | Proportion (%) | Actual evapotranspiration (mm) | Proportion (%) | |
April | 37.71 | 9.39 | 30.17 | 8.41 | 22.63 | 6.54 |
May | 58.55 | 14.57 | 50.19 | 13.99 | 50.19 | 14.50 |
June | 65.57 | 16.32 | 58.28 | 16.24 | 58.28 | 16.84 |
July | 109.13 | 27.16 | 89.29 | 24.89 | 89.29 | 25.80 |
August | 63.39 | 15.78 | 63.39 | 17.67 | 63.39 | 18.32 |
September | 41.38 | 10.30 | 41.38 | 11.53 | 41.38 | 11.96 |
October | 26.07 | 6.49 | 26.07 | 7.27 | 20.86 | 6.03 |
Whole growing season | 401.81 | 100.00 | 358.78 | 100.00 | 346.02 | 100.00 |
Table 3 The monthly actual evapotranspiration of different vegetation types
Month | Forest | Shrub | Grassland | |||
---|---|---|---|---|---|---|
Actual evapotranspiration (mm) | Proportion (%) | Actual evapotranspiration (mm) | Proportion (%) | Actual evapotranspiration (mm) | Proportion (%) | |
April | 37.71 | 9.39 | 30.17 | 8.41 | 22.63 | 6.54 |
May | 58.55 | 14.57 | 50.19 | 13.99 | 50.19 | 14.50 |
June | 65.57 | 16.32 | 58.28 | 16.24 | 58.28 | 16.84 |
July | 109.13 | 27.16 | 89.29 | 24.89 | 89.29 | 25.80 |
August | 63.39 | 15.78 | 63.39 | 17.67 | 63.39 | 18.32 |
September | 41.38 | 10.30 | 41.38 | 11.53 | 41.38 | 11.96 |
October | 26.07 | 6.49 | 26.07 | 7.27 | 20.86 | 6.03 |
Whole growing season | 401.81 | 100.00 | 358.78 | 100.00 | 346.02 | 100.00 |
Month | Rainfall | Forest | Shrub | Grassland |
---|---|---|---|---|
April | 0 | 37.71 | 30.17 | 22.63 |
May | 5.8 | 52.75 | 44.39 | 44.39 |
June | 36.7 | 28.87 | 21.58 | 21.58 |
July | 96.85 | 12.28 | -7.56 | -7.56 |
August | 64.78 | -1.39 | -1.39 | -1.39 |
September | 37.8 | 3.58 | 3.58 | 3.58 |
October | 32.5 | -6.43 | -6.43 | -11.64 |
Whole growing season | 274.43 | 127.38 | 84.35 | 71.59 |
Table 4 Actual ecological water deficit of the different vegetation types in the growing season (Unit: mm)
Month | Rainfall | Forest | Shrub | Grassland |
---|---|---|---|---|
April | 0 | 37.71 | 30.17 | 22.63 |
May | 5.8 | 52.75 | 44.39 | 44.39 |
June | 36.7 | 28.87 | 21.58 | 21.58 |
July | 96.85 | 12.28 | -7.56 | -7.56 |
August | 64.78 | -1.39 | -1.39 | -1.39 |
September | 37.8 | 3.58 | 3.58 | 3.58 |
October | 32.5 | -6.43 | -6.43 | -11.64 |
Whole growing season | 274.43 | 127.38 | 84.35 | 71.59 |
Month | Forest | Shrub | Grassland | |||
---|---|---|---|---|---|---|
Minimum | Optimal | Minimum | Optimal | Minimum | Optimal | |
April | 21.24 | 41.18 | 16.99 | 32.94 | 12.74 | 24.71 |
May | 36.32 | 70.41 | 31.13 | 60.35 | 31.13 | 60.35 |
June | 47.25 | 91.60 | 42.00 | 81.43 | 42.00 | 81.43 |
July | 60.08 | 116.49 | 49.16 | 95.31 | 49.16 | 95.31 |
August | 42.55 | 82.50 | 42.55 | 82.50 | 42.55 | 82.50 |
September | 22.78 | 44.17 | 22.78 | 44.17 | 22.78 | 44.17 |
October | 13.74 | 26.63 | 13.74 | 26.63 | 10.99 | 21.31 |
Whole growing season | 243.96 | 472.99 | 218.35 | 423.34 | 211.36 | 409.77 |
Table 5 Minimum and optimal ecological water requirements of the different vegetation types during the growing season (Unit: mm)
Month | Forest | Shrub | Grassland | |||
---|---|---|---|---|---|---|
Minimum | Optimal | Minimum | Optimal | Minimum | Optimal | |
April | 21.24 | 41.18 | 16.99 | 32.94 | 12.74 | 24.71 |
May | 36.32 | 70.41 | 31.13 | 60.35 | 31.13 | 60.35 |
June | 47.25 | 91.60 | 42.00 | 81.43 | 42.00 | 81.43 |
July | 60.08 | 116.49 | 49.16 | 95.31 | 49.16 | 95.31 |
August | 42.55 | 82.50 | 42.55 | 82.50 | 42.55 | 82.50 |
September | 22.78 | 44.17 | 22.78 | 44.17 | 22.78 | 44.17 |
October | 13.74 | 26.63 | 13.74 | 26.63 | 10.99 | 21.31 |
Whole growing season | 243.96 | 472.99 | 218.35 | 423.34 | 211.36 | 409.77 |
Month | Forest | Shrub | Grassland | ||||
---|---|---|---|---|---|---|---|
Minimum | Optimal | Minimum | Optimal | Minimum | Optimal | ||
April | 21.24 | 41.18 | 16.99 | 32.94 | 12.74 | 24.71 | |
May | 30.52 | 64.61 | 25.33 | 54.55 | 25.33 | 54.55 | |
June | 10.55 | 54.90 | 5.30 | 44.73 | 5.30 | 44.73 | |
July | -36.77 | 19.64 | -47.69 | -1.54 | -47.69 | -1.54 | |
August | -22.23 | 17.72 | -22.23 | 17.72 | -22.23 | 17.72 | |
September | -15.02 | 6.37 | -15.02 | 6.37 | -15.02 | 6.37 | |
October | -18.76 | -5.87 | -18.76 | -5.87 | -21.51 | -11.19 | |
Whole growing season | -30.47 | 198.56 | -56.08 | 148.91 | -63.07 | 135.34 |
Table 6 Minimum and optimal ecological water deficits of the different vegetation types in the growing season (Unit: mm)
Month | Forest | Shrub | Grassland | ||||
---|---|---|---|---|---|---|---|
Minimum | Optimal | Minimum | Optimal | Minimum | Optimal | ||
April | 21.24 | 41.18 | 16.99 | 32.94 | 12.74 | 24.71 | |
May | 30.52 | 64.61 | 25.33 | 54.55 | 25.33 | 54.55 | |
June | 10.55 | 54.90 | 5.30 | 44.73 | 5.30 | 44.73 | |
July | -36.77 | 19.64 | -47.69 | -1.54 | -47.69 | -1.54 | |
August | -22.23 | 17.72 | -22.23 | 17.72 | -22.23 | 17.72 | |
September | -15.02 | 6.37 | -15.02 | 6.37 | -15.02 | 6.37 | |
October | -18.76 | -5.87 | -18.76 | -5.87 | -21.51 | -11.19 | |
Whole growing season | -30.47 | 198.56 | -56.08 | 148.91 | -63.07 | 135.34 |
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