基于生态系统服务价值的江南传统农业区土地利用规划影响评价

IMPACT ASSESSMENT OF LAND USE PLANNING ON TRADITIONAL AGRICULTURAL AREA OF THE SOUTHERN YANGTZE RIVER BASED ON ECOSYSTEM SERVICES VALUE

保护和发展传统农业对提高区域资源可持续利用效益具有重要意义。以江南传统农业区浙江省桐庐县金牛村为例,运用市场价值法、生产成本法、机会成本法、影子工程法、费用替代法等方法,估算了稻田生态系统的生态服务价值,并在中国生态系统服务价值研究成果基础上,结合生物量和价格指数修正了耕地、园地、林地、水体生态系统的生态价值系数,据此预测和分析了金牛村土地利用规划实施前后的生态系统服务价值变化。结果表明:2008~2020年,金牛村各项生态服务功能的价值将提升10.70%~100.37%,生态系统服务总价值将从656.80×104元增加到1 022.10×104元,其中稻田生态系统占总价值的50.67%~53.63%。敏感性分析表明,金牛村生态系统服务价值缺乏弹性,计算的生态价值系数较为合理。总体上,金牛村土地利用规划能够产生较好的生态环境效益,建议适当增加水体规划面积,以提升当地生态旅游吸引力。

Protection and development of traditional agriculture have an important meaning for increasing regional resource sustainable utilization value.Taking Jinniu Village,a traditional agricultural area of the Southern Yangtze River as an example,the ecological services value of paddy system was evaluated with market value approach,production cost approach,opportunity cost approach,shallow project approach and cost surrogate approach.The ecological value coefficients of cropland,garden plot,woodland and water body ecosystems were adjusted by combing with biomass and price index based on the study of Chinese ecosystem services value.Then the changes of ecosystem services values of Jinniu Village were predicted and analyzed before and after the implement of land use planning.The results showed that during 2008 and 2020,the increase of ecological service functions would range from 10.70% to 100.73%,the total ecosystem services value would increase from 656.80×104 yuan to 1 022.10×104 yuan,and the proportion of paddy system in the total value would range from 50.67% to 53.63%.Sensitivity analysis manifested that the ecosystem services values of Jinniu Village were generally inelastic,and the ecological value coefficients calculated by this paper were reasonable.The land use planning would basically bring Jinniu Village a considerable eco-environmental benefit,while the water body should be increased in order to promote tourism attraction.