重庆市土地流转和经济发展对生态系统服务价值的影响

The effects of land circulation and economic development on the ecosystem service value in Chongqing

利用重庆市1999—2008年的土地利用变化数据,采用中国陆地生态服务价值的当量因子表,估算土地流转所产生的生态价值变化,并考虑社会经济发展对生态服务价值的影响。结果表明,重庆市1999、2004和2008年的生态系统服务价值分别为5234383.16万、5493479.62万和5525143.07万元。整体的生态系统服务价值表现出缓慢增长的趋势,其中林地、建筑用地的面积增加以及耕地面积减少是主要原因。在连续的两个研究段内,耕地的生态系统服务价值减少最多,说明城市化过程中,建设用地的开发已经严重影响了重庆市生态系统服务功能。此外,1999—2008年重庆市GDP与生态系统服务价值的比例越来越小,表明快速的经济增长与生态系统服务价值负相关。研究结果可以为政府进行土地优化配置及流转决策时提供参考建议,以保证经济、社会、生态协调发展。

Using the land use change data of Chongqing in 1999—2008,using the equivalent factor table of China's terrestrial ecological service value,the change in ecological value caused by land transfer is estimated,and the impact of social and economic development on the value of ecological service is considered.The results show that the value of ecosystem services in Chongqing in 1999,2004,and 2008 were 5,234,383,600,5,493,479,600 and 5,525,143,700 yuan,respectively.The overall value of ecosystem services has shown a slowly increasing trend.The increase in the area of forest land and construction land and the decrease in cultivated land are the main reasons.In the two consecutive research sections,the value of cultivated land ecosystem services decreased the most,indicating that the development of construction land during urbanization has seriously affected the ecosystem service functions of Chongqing.In addition,from 1999 to 2008,the proportion of Chongqing's GDP to the value of ecosystem services is getting smaller and smaller,indicating that rapid economic growth is negatively related to the value of ecosystem services.The research results can provide reference suggestions for the government in making optimal land allocation and transfer decisions to ensure coordinated economic,social,and ecological development.