典型喀斯特峰丛洼地农业生态系统生态服务价值评估——以平塘县19个乡镇为例

Evaluation of eco-service value of agro-ecosystem in typical karst peak cluster depressions:a case study of 19 villages and towns in Pingtang,Guizhou

在参考谢高地等制定的中国不同省份农田生态系统生物量因子表及中国陆地生态系统单位面积生态服务价值当量表基础上,结合平塘县区域特征,修正生态服务价值系数,对平塘县农业生态系统生态服务价值进行核算。结果表明:1)2013年平塘县19个乡镇生态服务总价值为538378.22万元,从单项生态服务价值来看,土壤形成生态服务价值最高,为100755.54万元,占总生态服务价值18.71%;其次是气体调节,为81738.45万元,占总生态服务价值15.18%;食物生产生态服务价值最低,为7939.23万元,占总生态服务价值1.47%,全县人均生态服务价值为16672.81元。2)各乡镇森林生态系统生态服务价值最高,占其总生态服务价值75%,其中卡蒲乡、白龙乡、卡罗乡等乡镇森林生态系统生态服务价值占总生态服务价值的比重超过90%。

On the basis of the biomass factor table of farmland ecosystem of different provinces in China and the per unit area eco-service value table of terrestrial ecosystem in China,we modified the eco-service value coefficient and calculated the eco-service value of agro-ecosystem of Pingtang County. The results showed that： the total ecoservice value of the 19 villages and towns in Pingtang in 2013 was 5,383,782,200 yuan; the eco-service value of soil formation was the highest（ 1,007,555,400 yuan,about 18. 71 % of total eco-service value）,followed by that of gas regulation（ 817,384,500 yuan,about 15. 18 % of total eco-service value）,and the eco-service value of food production was the lowest（ 79,392,300 yuan,about 1. 47 % of total eco-service value）; the eco-service value per capita was 16,672. 81 yuan; the eco-service value of forest ecosystem was the highest（ about 75 % of total ecoservice value）,and the eco-service value of forest ecosystem in Kapu Village,Bailong Village and Kaluo Village accounted for over 90 % of total eco-service value.