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中文摘要：
农地资源不仅具有经济生产功能,还具有大气调节、涵养水源、保持土壤成分、休闲娱乐等多种生态功能,而在非农化过程中这些功能在市场中没有以价格的形式体现出来,没有包含在农地的现实价值中。因而,有必要对农地的非市场功能进行详尽的分类及价值估算。同时,将由于市场失灵而没能包含到农地总价值中的生态环境等非市场价值纳入到成本效益决策中,来减少市场失灵所造成的农地非农化的效率损失。通过对农地非市场功能的具体分类及量化,测算我国不同经济区域因市场失灵导致的农地非农化过度损失,结果显示,代表东、中、西部地区的江苏、湖北和甘肃省的农地非农化过度损失Ⅰ分别为31.58%、38.13%和43.85%,这为我国农地非农化的行为调控及相应公共政策措施的制订和实施提供了理论依据。
英文摘要：
Farmland not only has the economic production function,but also has much important ecological function,such as atmosphere conditioning,water conservation,keeping soil composition,leisure entertainment,etc.During the process of farmland conversion,these functions don＇t embody with the form of price,and are not included by realistic value of farmland.So it is necessary to classify and quantify the ecological value of farmland,and to bring the non-market value into the cost-benefit decision-making,to void the efficiency loss of farmland conversion.Through the classification and quantification of non-market value,this paper estimated the excessive loss of farmland conversion.The results show that,in the provinces of Jiangsu,Hubei and Gansu,which are the representations of the east,central and west region,respectively,the excessive loss of farmland conversion is 31.58%、38.13% and 43.85%,respectively.This provides the theoretical foundation for behavior regulation of farmland conversion,realization mechanism and formulation and implementation of public policy.
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