多尺度生态系统服务权衡与协同关系——以延安市为例  

Trade-offs and synergies among ecosystem services at multiple scales:A case study of Yan’an City

作　　者：裴渊杰 罗漫雅 赵永华[1,2,3,4] 韩磊 杨舒媛[1,2,3,4] 张磊 PEI Yuan-jie;LUO Man-ya;ZHAO Yong-hua;HAN Lei;YANG Shu-yuan;ZHANG Lei(School of land Engineering,Chang'an Unirersity,Xi'an 710054,China;Key Laboratory of Degrad-ed and Unused land Remediation Engineering,Ministry of Natural Resources,Xi'an 710054.China;Shaanxi Prorincial Key Laboratory of Land Consolidation,Xi'an 710054.China;Shaanxi Prorince Land Consolidation Eingineering Technology Research Center,Xi'an 710054.China)

机构地区：[1]长安大学土地工程学院,西安710054 [2]自然资源部退化及未利用土地整治工程重点实验室,西安710054 [3]陕西省土地整治重点实验室,西安710054 [4]陕西省土地整治工程技术研究中心,西安710054

出　　处：《生态学杂志》2022年第7期1351-1360,共10页Chinese Journal of Ecology

基　　金：国家自然科学基金项目(31670549,31170664);自然资源部退化及未利用土地整治工程重点实验室开放基金(SXDJ2019-03);中央高校基本科研项目(300102270206,300102351506,300102501201)资助。

摘　　要：研究生态系统服务的权衡/协同关系,对指导生态系统管理和高效配置资源具有重要意义。基于土地利用、气象、土壤和归一化植被指数(NDVI)数据,分析了延安市2000、2010和2020年土壤保持、净初级生产力(NPP)、生境质量和产水量4种生态系统服务的时空变化,并对4种服务的热点区进行了识别,从全域、县域和流域3种尺度分析了生态系统服务之间的权衡/协同关系,并核算了不同地类的生态系统服务量。结果表明:2000—2020年延安市总体上土壤保持量增幅较大,固碳量先降后升,生境质量降幅较小,产水量先升后降,4种服务的空间格局基本保持不变;延安市非热点区、Ⅰ类热点区和IV类热点区面积明显减少,Ⅱ类热点区和Ⅲ类热点区面积明显增加;全域尺度下,延安市各生态系统服务之间主要表现为协同关系,县域尺度和流域尺度下各服务间关系与全域尺度差异明显。林地是延安市提供生态系统服务的主要地类,土地利用类型、土壤类型、气候和地形等因素共同作用导致生态系统服务权衡/协同关系产生尺度效应。It is of significance to understand trade-offs and synergies of ecosystem services(ESs)for ecosystem management and efficient resource allocation.Based on data of land use,meteorology,soil and normalized vegetation index(NDVI),we analyzed the spatiotemporal variations of four ESs(i.e.,soil conservation,net primary productivity(NPP),habitat quality,and water yield)in Yan’an City from 2000 to 2020.Moreover,hot spot regions of four ESs were identified.The trade-offs and synergies among ESs were analyzed at city,county,and basin scales.The amount of ESs in different land use types was calculated.The results showed that soil conservation increased greatly,carbon sequestration decreased firstly and then increased,habitat quality was slightly declined,and water yield increased firstly and then decreased,and thus the spatial pattern of the four ESs remained basically unchanged from 2000 to 2020.The proportion of non-hot spot areas,Ⅰareas and IV areas decreased significantly,the proportion of theⅡareas andⅢareas increased greatly.The relationship among ESs in Yan’an as a whole was mainly synergetic,whereas such relationships at county and watershed scales were different from that at the whole city scale.Forest land was a major land use type that provided ESs in Yan’an region.The combination of land use type,soil type,climate,and terrain were the main factors driving the scale effects on the relationships between ESs trade-offs and synergies.

关 键 词：生态系统服务 时空变化 热点区 多尺度表达 

分 类 号：X171.1[环境科学与工程—环境科学]