The Huanghe (Yellow) River Water Supply Area of Gannan lies in the Qinghai-Tibet Plateau, so it can be considered as the important part of the water tower of China and the protection of its water resources is crucial. The minimum-data approach, which integrates the spatial heterogeneity of the biophysical environment and the economic behavior of farmers, is a transparent and cost effective tool to quantify the effect of financial incentives in the conservation of water resource. Policy relevant information can be generated without the need to conduct expensive field survey and to set up more elaborate economics simulation models. The paper makes use of the precipitation storage model to simulate the additional water conservation from grazing to grazing prohibition, then applies the minimum-data approach to simulate the supply curve of the water conservation of the grassland ecosystem from the spatial distribution of opportunity cost per unit of water conservation. The results show that it is theoretically possible to increase water conservation quantity by implementing the ecological compensation in the Huanghe River Water Supply Area of Gannan, and the initial equilibrium supply of water before farmers are given payments is 5.954?107 m3. When the compensation standard of the Hezuo,Xiahe,Maqu, Luqu, Zhuni and Lintan respectively equal to 1024.3 yuan/ha, 999.79 yuan/ha, 861.74 yuan/ha, 1008.54 yuan/ha, 585.54 yuan/ha and 983.22 yuan/ha, all of the degradation grassland will be prohibited from grazing, the additional water conservation will equals to 2.253?109 m3 in the Huanghe River Water Supply Area of Gannan. That is to say,it would be technically and economically feasible to pay farmers to increase water conservation quality and secure the water tower of Qinghai-Tibet Plateau. This water supply curve can be used by policy decision makers to assess how much farmers are willing to supply at a given price per unit of water. Integrated with an assessment of how much water is expected, the efficient water and grassland protection policy can be implemented.
ZHAO Xue-yan, DONG Xia
. Application of Minimum-data Approach in Ecological Compensation—A Case of Huanghe River Water Supply Area of Gannan[J]. SCIENTIA GEOGRAPHICA SINICA, 2010
, 30(5)
: 748
-754
.
DOI: 10.13249/j.cnki.sgs.2010.05.748
[1] Sven Wundera,Stefanie Engelb,Stefano Pagiolac.Taking stock:A comparative analysis of payments for environmental services programs in developed and developing countries[J].Ecological Economic,2008,65(4):834-852.
[2] Stefanie Engela,Stefano Pagiolab,Sven Wunderc.Designing payments for environmental services in theory and practice: An overview of the issues[J].Ecological Economic,2008,65(4):663-674.
[3] Just R E,Antle J M.Interaction between agricultural and environmental policies:a conceptual framework[J].American Economic Review,1990,80(2):197-202.
[4] Antle J M,Capalbo S M,Mooney S,et al.Spatial heterogeneity,contract design,and the efficiency of carbon sequestration policies for agriculture[J].Journal of Environmental economics and Management,2003,46(2):231-250.
[5] Wu J,Adams R M,Kling C L,et al.From micro level decisions to landscape changes: an assessment of agricultural conservation policies[J].American Journal of Agricultural Economics,2004,86(2):26-41.
[6] Antle J M,Valdivia R O.Modeling the supply of ecosystem services from agriculture: a minimum data approach[J].The Australian Journal of Agricultural and Resource Economics,2006,50(1):1-15.
[7] Walter Immerzeel,Jetse Stoorvogel,John Antle. Can payments for ecosystem services secure the water tower of Tibet?[J].Agricultural Systems,2008,96(1-3):52-63.
[8] 李志刚,段焕娥.西北高寒民族地区生态环境问题及农牧业发展——以甘南藏族自治州为例[J].地理科学,2005,25(5):551~555.
[9] 范世香,高 雁,程银才,等.林冠对降雨截流能力的研究[J].地理科学,2007,27(2):200~204.
[10] 赵同谦,欧阳志云,贾良清,等.中国草地生态系统服务功能间接价值评价[J].生态学报,2004,24(6):1103~1104.
[11] 赵焕胤,朱劲伟,王维华.林带和牧草地径流的研究[J].水土保持学报,1994,8(2):56~61.
[12] 姚玉璧,王润元,邓振镛,等.黄河上游主要产流区气候变化及其对水资源的影响——以甘南高原为例[J].中国沙漠,2007,27(5):903~909.
[13] 罗伟祥,白立强,宋西德,等.不同覆盖度林地和草地的径流量与冲刷量[J].水土保持学报,1990,4(4):30~35.
[14] 张 杰,李栋梁,王 文.夏季风期间青藏高原地形对降水的影响[J].地理科学,2008,28(2):235~240.
[15] 李宏权,范广州,周定文,等.青藏高原春季植被变化特征及其对夏季气温的影响J].地理科学,2008,28(2):259~265.
[16] Arnold J G,Fohrer N.SWAT2000:current capabilities and research opportunities in applied watershed modeling[J].Hydrological Processes,2005,19:563-572.
[17] Srinivasan R,Ramanarayanan T S,Arnold J G,et al. Large area hydrologic modeling and assessment part II:model application[J].Journal of American Water Resource Association,1998,34:91-101.
[18] 张 东,张万昌,朱 利,等.SWAT分布式流域水文物理模型的改进与应用研究[J].地理科学,2005,25(5):434~440.
[19] 刘三超,张万昌,高懋芳,等.分布式水文模型结合遥感研究地表蒸散发[J].地理科学,2007,27(3):354~358.
