Study On The Value Accounting Of Farmland Ecosystem In Qianxi County

Farmland ecosystem is an important part of terrestrial ecosystems. It not only offers a variety of agricultural products for humans, but plays an irreplaceable role in maintaining life support systems and dynamic balance of environment, which are necessary base for human survival and production. To quantify farmland ecosystem services value, help us understand farmland ecosystem services, improve farmers` awareness of healthy farmland ecosystem functioning, and guide farmers` reasonable production and management.In this paper, we take Qianxi farmland ecosystem as research object. The theory of ecosystem services, agricultural land value theory, the theory of sustainable development, the contingent value theory and gray system theory are theoretical basis. We use valuation methods, statistics, GIS technology and field research, to appraise use and non-use value of Qianxi farmland ecosystem. Finally, we propose corresponding measures for healthy functioning farmland ecosystem.Products, carbon sequestration, oxygen emission, water conservation and soil fertility maintaining are leading services of Qianxi farmland ecosystem.The total value of Qianxi farmland ecosystem services is about ï¿¥29.48 billion in 2013, per hectare area services valueï¿¥48639.02. Farm products make a great contribution in food security and improving living standards. Nut value accounts for 60.61% of total products values. Nutrient loss and greenhouse gas emissions bring tremendous negative value to Qianxi farmland ecosystem. Qianxi County has been developing tourism agriculture, setting up all kinds of picking garden, it brings about non-use value of farmland ecosystem services increased, and per hectare area to be reachedï¿¥5800 of 2013.According to gray correlation analysis and principal component analysis, the most significant impact factors on Qianxi mountain farmland ecosystem service values change are as follows: the arable land, agricultural population, agricultural chemical fertilizer, etc.Based on topography, climate, soil conditions, and socio-economic status of Qianxi, from the perspective of developing tourism and improving landscape value of farmland ecological, Qianxi should set up agricultural ecological compensation mechanism, adjusting the industrial structure, improve the level of agricultural science and technology, establish special funds, and improve agricultural environmental policies and regulations.