摘要
本文以宁夏盐池县1989年、1999年、2006年、2010年土地利用变化数据为基础,分别计算了盐池县土地利用变化及其引起的生态系统服务价值的变化。结果表明:1989—2010年间盐池县各种类型土地之间的转移较为明显,林草、水浇地和旱地面积呈波动变化,总体上林草和水浇地面积增加,旱地面积减少,低覆盖草地先减少后增加,未利用地先增加后减少;研究期内盐池县生态系统服务价值1989—1999年间呈增长趋势,而1999—2006年间呈下降趋势,2006—2010年间呈快速增长的趋势,林草和旱地对生态系统服务价值的贡献最大;土地面积的变化对生态系统服务价值的变化呈现出正相关的关系。
Baced on dynamic date of land use in 1989,1999,2006 and 2010 in Yanchi county of Ningxia, this paper analyzed the land use change and its consequent changes in ecosytem services value. Results showed that the changes of land use were obvious during 1989 and 2010. The area of forest and grassland, irrigated land and dry land area has a fluctuated trend.Overall, the area of forest and grassland,irrigated land increased,and dry land decreased;while the area of low cover grassland reduced before and increased later,and unused land area increased before and decreased later.The ecosystem service value of Yanchi County had an increasing tendency during 1989 to 1999,while decreased during 1999 to 2006 and then increased rapidly during 2006 to 2010.The forest and grassland and dry land were the land use types that made the greatest contribution to the total ecosyetem services value of the study region.The change of land area has a positive correlation with the change of ecosystem service value.
基金
国家自然科学基金项目(41161078)
关键词
土地利用
生态系统服务价值
盐池县
land use
ecosystem service value
Yanchi County of Ningxia
