摘要
甘肃白龙江流域是长江上游重要水源涵养和生态屏障区,生态系统服务研究对该流域生态保护与经济发展的双赢具有重要意义。本研究基于InVEST模型进行4种典型生态系统服务(如土壤保持、水源涵养、食物供给、生境质量)评估,并通过相关性和均方根偏差(RMSD)开展服务间多尺度权衡及其成因分析。结果表明:土壤保持、水源涵养和生境质量两两之间为显著协同关系,食物供给分别与生境质量、土壤保持和水源涵养间为显著权衡关系。3对协同服务和食物供给与生境质量的权衡强度高值主要集中于文县、迭部和舟曲的中高山阴陡坡林区;食物供给与土壤保持、食物供给与水源涵养间的权衡强度高值主要集中于宕昌和武都的中低山阳缓坡农牧区。人类活动驱使下的土地利用/覆被格局空间差异是影响服务权衡程度及其尺度效应的重要因素。
The Bailongjiang watershed of Gansu is an important water conservation and ecological barrier area in the upper reaches of Yangtze River.It is necessary to reveal the tradeoffs and synergies of ecosystem services(ESs)for the"win-win"of watershed ecological system and social eco-nomy development.Based on the InVEST model,four typical ESs including soil conservation(SC),water conservation(WC),food supply(FS),and habitat quality(HQ)were assessed,and the multi-scale tradeoffs and synergies of ESs and its drivers were analyzed by correlation and root mean square deviation(RMSD).The results showed that there were significant synergies among SC,WC,and HQ,and a significant tradeoff between FS and HQ,SC,WC,respectively.The areas with high tradeoff intensity between the three pairs of synergistic services(SC-WC,SC-HQ,WC-HQ),and between FS and HQ were mainly concentrated in the steep forest area of middle-high mountain in Wenxian,Diebu and Zhouqu.The high intensity of tradeoffs between FS-SC,FS-WC were mainly concentrated in the gentle apricus farming and pastoral areas of middle-low mountain in Tanchang and Wudu.The spatial variation of land use/cover caused by human activities was an important factor affecting the degree of ES tradeoffs and its scale effect.
作者
巩杰
柳冬青
高秉丽
徐彩仙
李焱
GONG Jie;LIU Dong qing;GAO Bing li;XU Cai xian;LI Yan(College of Earth and Environmental Sciences,Lanzhou University/Ministry of Education Key Laboratory of Western China’s Environmental Systems,Lanzhou 730000,China)
出处
《应用生态学报》
CAS
CSCD
北大核心
2020年第4期1278-1288,共11页
Chinese Journal of Applied Ecology
基金
国家自然科学基金项目(41771196)
第二次青藏高原综合考察研究项目(2019QZKK060300)资助。
关键词
生态系统服务
权衡
协同
西部山地
甘肃白龙江流域
ecosystem service
tradeoffs
synergies
western mountainous China
Bailongjiang watershed of Gansu
