摘要
生态系统服务是连接自然环境与人类福祉的重要桥梁。滇中地区作为中国西南地区的重要生态屏障,其生态系统服务价值对区域乃至国家的生态安全都具有重要影响。本文基于1990年、2000年、2010年和2020年四期土地利用遥感数据,运用土地利用动态度等方法分析滇中地区土地利用变化规律;借助当量因子法定量分析了滇中地区生态系统服务价值的时空演变特征,并进一步明确土地利用/覆盖变化与生态系统服务价值变化之间的内在联系。研究表明,1990—2020年滇中地区主要土地利用类型为林地和耕地,二者占区域总面积的89.00%;各土地利用类型中,草地面积减少幅度最大,建设用地的土地利用动态度最大。生态系统服务价值总体呈现上升趋势,价值量由1990年的2675.46亿元增至2020年的2740.36亿元,增长率为2.43%;空间分布格局整体表现出由西向东递减的特征,林地、水域、耕地和草地是生态系统服务价值的构成主体,水文调节和气候调节功能在二级生态系统服务中占据主导地位。林地和草地是滇中地区生态系统服务价值变化的主要贡献因子,区域总生态系统服务价值对土地利用变化的敏感程度逐渐减弱,这意味着土地利用变化对该地区生态系统服务价值的影响逐步减小。
Ecosystem services are an important bridge between the natural environment and human well-being.The central Yunnan region is an important ecological barrier in southwest China,and its ecosystem service value has an important impact on the ecological security of the region and even the country.Based on the remote sensing data of land use in 1990,2000,2010 and 2020,the land use dynamic degree and other methods are used to analyze the law of land use change in central Yunnan region.The spatial and temporal evolution characteristics of ecosystem service value in central Yunnan region are quantitatively analyzed by means of equivalent factor method,and the internal relationship is further clarified between land use/land cover changes and ecosystem service value changes.The results show that the main land use types in central Yunnan region were forest land and cultivated land,accounting for 89.00%of the total area of the region from 1990 to 2020.Among the land use types,the grassland area decreased the most among the land use types,and the land use dynamic degree of construction land was the largest.The value of ecosystem services in central Yunnan region increased from 267546 million yuan in 1990 to 274036 million yuan in 2020,with a growth rate of 2.43%.The spatial distribution pattern showed a decreasing trend from west to east.The main body of ecosystem service value is forest land,water area,cultivated land and grassland,and the secondary ecosystem service function is mainly hydrological regulation and climate regulation.Woodland and grassland were the main contributors to the change of ecosystem service value in central Yunnan region.The sensitivity of regional total ecosystem service value to land use change gradually decreased,which means that the impact of land use change on ecosystem service value in the region gradually decreased.
作者
赵海溶
吴海平
侯云花
高洁
陈超
ZHAO Hairong;WU Haiping;HOU Yunhua;GAO Jie;CHEN Chao(Kunming Comprehensive Survey Center of Natural Resources,China Geological Survey,Kunming 650100,Yunnan,China;Institute of China Land Surveying and Planning,Beijing 100035,China)
出处
《自然资源情报》
2025年第11期1-10,18,共11页
Natural Resources Information
基金
中国地质调查局项目“全国国土变更调查国家级外业核查(昆明中心)”(编号:DD20230526)。
关键词
生态系统服务价值
土地利用变化
当量因子法
滇中地区
ecosystem service value
land use change
equivalent factor method
central Yunnan region
