土地生态系统服务价值演化特征——以黄河三角洲高效生态经济区为例

Evolution Characteristics of Land Ecosystem Service Value——A Case Study of Yellow River Delta High-Efficiency Ecological Economic Zone

以黄河三角洲高效生态经济区为研究对象,采用当量因子法对该区域1995年、2005年和2015年土地生态系统服务功能价值进行评估,并探讨其动态演变特征.结果表明:湿地、农田、水域和建设用地生态系统是区域土地生态系统服务主体,其中前三种生态系统起支撑作用,后者起到负影响.构成区域生态系统一级类型服务主体为调节和支持服务;二级服务主体为废物处理、气候调节和保持土壤,其占比和超过60%.各土地生态系统服务价值和不同类别生态系统服务功能价值变化具有显著差异,变化率在时间尺度上表现为2005-2015年变化幅度更突出.

Taking Yellow River Delta High-Efficiency Ecological Economic Zone as an example,this paper evaluated its land ecosystem service value(ESV)by equivalent factor method in 1995,2005,and 2015,and explored the dynamic evolution characteristics.The results show that,wetland,cropland,water body and constructive land are the main parts of regional land ecosystem service,among which the first three play a supportive role,but the latter shows the negative impact.The primary types of ecosystem service are regulation service and support service;the secondary services are waste treatment,climate regulation and soil conservation,which account for more than 60%of the total ESV.There are significant differences in ESV of land ecosystems and types of ecosystem service,meanwhile,the change rate of ESV i s more prominent during the period 2005 to 2015.