黄淮海地下水亏水区农业生产用水生态代价评估--以河北省栾城县为例

An ecological cost evaluation of agricultural irrigation water consumption in the water-deficient area of Huang-huai-hai Plain--A case study of Luancheng County,Hebei Province

摘要: 利用恢复费用法及成本替代法等经济学方法初步估算了河北省栾县地下水资源超采的生态经济代价,结果表明:因地下水位下降每年新增提水成本1263.8万元,相当于2000年种植业总产值的1.2%; 消除因地下水下降引发的环境污染费用为1512.2万元, 相当于2000年种植业产值的1.4%。栾城县每年超采的地下水资源总成本平均为7897.6万元, 分别相当于2000年农业总产值的3.7%, 种植业产值的7.3%。对该地区的农业生产进行绿色核算, 全县粮经饲作物的经济效益减少为17047.9万元, 绿色核处结果比传统核算结果降低了29.4%。

Abstract: Ecological and economic costs of over-exploitation of groundwater was estimated by using a renew-expense method and a cost-substitute method. Results indicate that irrigation cost increases by 12.638 million Yuan because of falling groundwater level in Luancheng County, which is 1.2% of crop GDP in 2000. Cost of eliminating pollution brought about by falling groundwater level is 15.122 million Yuan, which is 1.4% of crop GDP in 2000. Average shadow value of groundwater over-exploitation is 79.876 million Yuan, which is 7.3% of crop GDP and 3.7% of agricultural GDP. Total economic benefit of crops drops to 170.479 million Yuan(calculated by GGDP)and 71.6% of the results are obtained by traditional calculation method.