陕西省生态系统服务权衡/协同关系阈值识别  

Assessment of trade-off/synergy relationships between ecosystem services and identification of ecological restoration thresholds

作　　者：荀斌[1,2,3] 郑莹 范蓉 郝蕊芳 刘宝印 XUN Bin;ZHENG Ying;FAN Rong;HAO Ruifang;LIU Baoyin(College of Urban and Environmental Sciences,Northwest University,Xi′an 710127,China;Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity,Xi′an 710127,China;Shaanxi Xi′an Urban Forest Ecosystem Research Station,Xi′an 710127,China;School of Soil and Water Conservation,Beijing Forestry University,Beijing 100083,China;Institutes of Science and Development,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]西北大学城市与环境学院,西安710127 [2]陕西省地表系统与环境承载力重点实验室,西安710127 [3]陕西西安城市生态系统定位观测研究站,西安710127 [4]北京林业大学水土保持学院,北京100083 [5]中国科学院科技战略咨询研究院,北京100190

出　　处：《生态学报》2024年第17期7431-7444,共14页Acta Ecologica Sinica

基　　金：国家自然科学基金重点项目(42041004);国家自然科学青年基金项目(42001260)。

摘　　要：生态系统服务权衡/协同关系的时空格局变化和关键阈值识别对区域生态保护与修复工程的建设和效益评价具有重要参考意义。已有研究主要关注生态保护和修复工程带来的生态系统服务及其权衡/协同关系的变化,很少将生态恢复的阈值效应考虑其中。采用基于生态系统服务权衡/协同关系构建的生态获益指数,评价了陕西省2000年和2020年净初级生产力、土壤保持和产水服务的协同供给能力;利用地理探测器和约束线方法分析了生态系统服务协同供给能力的主导影响因素和阈值特征。结果表明:与2000年相比,2020年陕西省净初级生产力、土壤保持和产水服务均有所增加,两两生态系统服务之间总体表现为协同关系,但具有明显的时空差异。2020年生态系统服务协同供给能力明显增加,其中陕北中部和陕南西部提升最为明显。降水和归一化植被指数(NDVI)是生态系统服务协同供给能力的主导影响因素,他们对生态系统服务协同供给能力的影响具有非线性效应和阈值特征。当NDVI在0.6—0.7之间或年降水量为1100 mm左右时,生态系统服务协同供给能力达到最高,超过上述阈值后NDVI或降水对生态系统服务协同供给能力的促进作用减弱。研究能够为生态恢复效益评价提供参考方案,为陕西省生态保护和恢复建设提供决策支持。It is essential to consider ecosystem services(ESs)trade-off/synergy relationships and their change thresholds when evaluating the benefits of regional ecological restoration projects(ERPs)and informing conservation management decisions.Prior research has mainly focused on how ERPs altered ESs and their trade-offs/synergies,with little attention paid to the ecological restoration threshold associated with ESs′relationships.In this study,we used ecological models to estimate vegetation net primary productivity(NPP),soil conservation(SC),and water yield(WY)in Shaanxi Province,a representative research region that has implemented the Grain for Green Project(GGP)since the late 1990s.We also constructed a new ESs benefit index that integrated ESs and their trade-off/synergy relationships to evaluate the ESs benefits from the GGP.Additionally,we applied the methods of the geographical detector and constraint line to identify the dominant driving forces and their nonlinear effects on the ESs benefits.The results showed that(1)the NPP,SC,and WY increased by 39%,4%,and 42%,respectively,between 2000 and 2020.There was an obviously spatial heterogeneity in the ESs changes.The rise of NPP and SC was mostly concentrated in the center of Northern Shaanxi,the west of Guanzhong,and the west of Shannan,and the increase of WY was predominantly concentrated in the western part of Guanzhong and the central and western parts of Shannan.(2)All pairs of ESs in Shaanxi Province exhibited the strongly positive correlations,indicating a high level of ESs synergies.Spatially,the Guanzhong-Shannan border area was the primary location for the increase in the synergy degree between NPP and SC,as well as NPP and WY,and the central Northern Shaanxi was the main region where the synergy degree between NPP and WY,as well as SC and WY,decreased.(3)The ESs benefits in Shaanxi Province grew dramatically between 2000 and 2020;the significant increase in the ESs benefits was mainly concentrated in the center of Northern Shaanxi and the west of Shann

关 键 词：生态恢复 生态系统服务 权衡/协同关系 生态阈值 陕西省 

分 类 号：X171.1[环境科学与工程—环境科学]