【作者】 杜加强； 王金生； 舒俭民； 滕彦国；

【Author】 DU Jia-qiang~(1,2),WANG Jin-sheng~2,SHU Jian-min~1,TENG Yan-guo~2 (1 Chinese Research Academy of Environmental Sciences,Beijing,100012,China;2.College of Water Science, Beijing Normal University,Beijing,100875,China)

【机构】 中国环境科学研究院； 北京师范大学水科学研究院；

【摘要】 研究区域生态系统服务价值对土地利用变化的响应,对于指导土地利用向环境友好型的方向发展具有重要意义。本文在分析重庆市1996-2006年土地利用变化的基础上,计算了重庆市生态系统服务价值的变化,并对其成因进行了分析。结果表明,10年间重庆市的耕地和未利用地大量减少,其它土地利用类型均在增加;耕地减少幅度较大,达320689hm~2;林地净增量较大,年均增长约28305hm~2,而园地的土地利用动态度较大,约为5.11%;由于耕地和未利用地的价值系数小于林地、园地和牧草地,使得区域生态系统服务价值总体上呈现增长趋势;林地提供的生态系统服务价值占据主体地位,并主导着生态系统服务价值的变化趋势;食物生产服务功能有所减弱,其它服务功能均有所增强,水源涵养功能的净增量最大,娱乐文化功能的增长幅度最大;各土地利用类型的生态系统服务价值的弹性系数均小于1;土地利用变化对生态系统服务价值的影响是积极的,研究时段内的土地利用变化有利于该区生态系统服务功能的提高。究其原因主要是重庆市直辖后社会经济的快速发展和退耕还林等工程的实施。更多还原

【Abstract】 It is significant to study the responses of regional ecosystem service value to land use change, because it can guide land use model to more environment-friendly direction.Firstly,the paper analyses the land use change in Chongqing city during 1996-2006.Then,it calculates the change of the ecosystem service values, using the table of equivalent weight factor of economic value of terrestrial ecosystem services of China and ecological sensitivity analysis.The results show that from 1996 to 2006,area of cultivated land and unused land decrease dramatically and others increases,the cultivated land area was decreased by 320689hm²,forest land has the greatest net increase,which is about 28305hm²·yr^-1and garden land has the largest rate of increase, which is 5.11%.Due to comparatively small ecological value coefficients of cultivated land and unused land and comparatively large ecological value coefficients of forest land,garden land and pasture,the total ecosystem service values of Chongqing city increases.The ecological service value provided by the forest land occupies dominant position and the trend of the total ecosystem service values.The function of food production becomes weakened,while all other functions are strengthened.Water conservation function has the largest net increase,and the entertainment and cultural function has the largest rate of increase.The results also indicate that the total change of ecosystem service value is inelastic.In conclusion,the impact of land use change on ecosystem service value is positive,and land use change has improved eco-environment in Chongqing city. Reasons for that are the rapid socio-economic development after the establishing municipality status and the implementation of returning farmland to forest project.更多还原