陇南市武都区土地生态服务功能价值评估及其变化分析

土地生态服务功能价值的正确核算可以有效地规范和引导人类正确的土地利用行为,进而促进全球陆地生态系统的良性发展.以甘肃省陇南市武都区为例,应用土地利用变化模型和生态服务价值核算模型,结合武都区1996年、2006年土地利用现状、变更数据库以及其他相关的社会经济数据,分析了该区土地利用变化状况.结果表明:该区1996～2006年10a间土地生态服务功能价值增加了6.7×103万元,林地对生态服务价值的贡献率最高,达73%;土地生态服务价值和GDP增长率之间差异明显,表明该区目前GDP的增长模式对生态环境存在一定的负面影响.在此基础上,提出了对陇南市武都区土地利用结构调整的建议.

Evaluation and change analysis on land ecological service in Wudu District of Longnan City

Land is the carrier of all terrestrial ecosystems.Human activities of land utilization can influence the value of ecosystem service function,so it is necessary to restrain and guide human beings′ behaviors of land utilization by calculating the value of ecosystem service function exactly,and this can promote the positive development of the terrestrial ecosystems.Based on land use change and eco-service value model,we took Wudu District as an example,used the models of land use change and eco-service value to analyze the change of land-use for Wudu District.The results showed that the value of the land ecosystem service function of Wudu District increased 67 million Yuan from 1996 to 2006 and the forest land had the largest contribution ratio to the value of eco-service(73%).Meanwhile,there was a significant difference between the value of eco-service and GDP,and this indicated that the increase of GDP had a negative influence on the ecosystem.Finally,we proposed the adjustment suggestions for land utilization to make a reference for the harmonious development between the economy and the ecological environment protection.