Calculation method of ecological water requirement for forestland and its application to Huang-Huai-Hai Region

Abstract

Abstract: The evapotranspiration and soil moisture content of forestland were studied in relation to free growth. It was found that when the soil moisture content was about 45～100 % of field capacity and the actual evapotranspiration came up to 60～100 % of potential evapotranspiration,the growth of trees could be sustained. On the basis of our research,the grading standard and calculation method of ecological water requirement of forestland were established. Moreover,the ecological water requirement for forestland in Huang Huai Hai area was estimated by GIStechnology,and its ecological water shortage was compared to its current water consumption. The results indicated of that the annual ecological water requirement of forestland in Huang Huai Hai region was 25.6～45.8 billion m³,and its current water consumption was approximately 2.8 billion m³ below the minimum of ecological water requirement,and 8.4 billion m³ below the optimal ecological water requirement.

Key words: Forestland, Ecological water requirement, Evapotranspiration, Soil moisture content, Huang-Huai-Hai region, pomegranate, emery analysis, sustainable development, desertification control, Yunnan Province

CLC Number:

S717
X321

ZHANG Yuan, YANG Zhifeng . Calculation method of ecological water requirement for forestland and its application to Huang-Huai-Hai Region[J]. Chinese Journal of Applied Ecology, 2002, (12): 1566-1570.

References

[1] Bryan DW.1999.Water and plants in freshwater wetlands.In:Baird AJ eds.Eco-hydrology.London:Routledge.128～157
[2] Chang H-S(张新时).1989.The potential evapotranspiration(PE) index for vegetation and vegetation-climatic classification 1.An introduction of main methods and PEP program.Acta Phytoecol et Geobot Sin(植物生态学与地植物学学报),13(1):1～9(in Chinese)
[3] Cui B-S(崔保山),Yang Z-F(杨志峰).2002.Water requirement for eco-environmental aspect on wetland.Acta Sci Circ(环境科学学报),22(2):213～218(in Chinese)
[4] Deng S-Q(邓时琴).1986.Map of chinese soil quality.In:Institute of Soil Science,Chinese Academy of Sciences ed.Atlas of Chinese Soil.Beijing:Map Press.23～24(in Chinese)
[5] Geoffrey EP.1996.Water allocation to protect river ecosystems.Regu Rivers:Res Man,12:353～365
[6] Jia B-Q(贾宝全),Ci L-J(慈龙骏).2000.The primary estimation of water demand by the eco-environment in Xinjiang.Acta Ecol Sin(生态学报),20(2):243～250(in Chinese)
[7] Li L-J(李丽娟),Zheng H-X(郑红星).2000.Environmental and ecological water consumption of river systems in Haihe-Luanhe basins.Acta Geogr Sin(地理学报),55(4):496～500(in Chinese)
[8] Liu C-M(刘昌明),Wei Z-Y(魏忠义).1989.Agricultural Hydrology and Water Resources in the North China Plain.Beijing:Science Press.(in Chinese)
[9] Liu JL,Yang ZF.2002.Study on the ecological and environmental water demand of lakes in the Haihe-Luanhe Basin North China.J Environ Sci,22(2):220～229
[10] Milly PCD.1992.Potential evaporation and soil moisture in general circulation models.J Clim,5(3):209～226
[11] Penman HL.1948.Natural evaporation from open water,bare soil,and grass.Proc Roy Soc A,193:454～465.
[12] Saxton KE,Rawals JW,Romberger JS,et al.1986.Estimating generalized soil-water characteristics from texture.Soil Sci Soc Am J,50:1031～1036
[13] Shen Z-R(沈振荣),Zhang Y-F(张瑜芳),Yang S-X(杨诗秀).1992.Researches and Experiments of Water Resources Science-Atmosphere Water,Surface Water,Soil Water,Groundwater.Beijing:China Science and Technology Press.345～350(in Chinese)
[14] Tennant DL.1976.Instream flow regimes for fish,wildlife,recreation,and related environmental resources.In:Orsborn JF,Allman CH eds.Proceedings of Symposium and Specility Conference on Instream Flow NeedsⅡ.Bethesda:American Fisheries Society,Maryland.359～373
[15] Wang R-H(王让会),Song Y-D(宋郁东),Fan Z-L(樊自立),et al.2001.Estimation on ecological water demand amount in four sources and one mainstream area of Tarim basin.J Soil Water Conv(水土保持学报),15(1):19～22(in Chinese)
[16] Wang X-Q(王西琴),Liu C-M(刘昌明),Yang Z-F(杨志峰).2000.Method of resolving lowest environmental water demands in river course Ⅰ.Theory.Acta Sci Circ(环境科学学报),21(5):544～547(in Chinese)
[17] Wang X-Q(王西琴),Yang Z-F(杨志峰),Liu C-M(刘昌明).2000.Method of resolving lowest environmental water demands in river course Ⅱ.Application.Acta Sci Circ(环境科学学报),21(5):548～552(in Chinese)