干旱区MODS格局下绿洲生态系统对全球变化的响应  

Response of Oasis Ecosystem to Global Change under MODS Pattern in Arid Zone

作　　者：王让会[1] 

机构地区：[1]南京信息工程大学环境科学与工程学院,江苏南京210044

出　　处：《南京气象学院学报》2008年第6期767-773,共7页Journal of Nanjing Institute of Meteorology

基　　金：中国气象局软科学项目(QR2008-39);国家科技支撑计划项目(2006BAD26B0902);国家重点基础研究规划(973)项目(2006CB705809);中国科学院知识创新重大项目(KSCX-YW-09);南京信息工程大学科研启动基金(20070105)

摘　　要：干旱区山地—绿洲—荒漠系统(Mountain-Oasis-Desert System,MODS)中的气候、水文、土壤、植被特征,直接反映了全球变化的特征。以中亚哈萨克斯坦东部及中国西部干旱区塔里木盆地南缘的且末绿洲为例,在分析干旱区MODS宏观特征的基础上,从温度与降水变化所反映的气候特征,以及景观多样性、景观优势度、景观均匀度及景观破碎度等景观指数所反映的景观特征,分析了绿洲生态系统对全球变化的响应过程。同时,从生态系统要素之间耦合关系、生态系统服务价值等方面分析了全球变化的区域响应特征,并进一步分析了绿洲生态系统的耗散机制,提出了生态系统调控的途径。The characteristics of climate, hydrology, soil and vegetation in Mountain-Oasis-Desert System（MODS） directly reflect the impact of global change in arid zone. Taking Qiemo oasis ecosystem located in the south of Tarim Basin in the western China and the east of Kazakhstan in Central Asia for example,based on the analysis of MODS macro-characteristics in arid zone, the response of oasis ecosystem to global change is analyzed from the perspectives of the climate characteristics reflected by tem- perature and precipitation changes, and the landscape characteristics reflected by landscape indexes such as landscape diversity, landscape dominance, landscape evenness, and landscape fragmentation. Mean- while, the regional response characteristics of global change are analyzed from the coupled relation a- mong ecosystem factors and the ecosystem service value. Furthermore, the dissipation mechanism and the regulation approach of oasis ecosystem are proposed.

关 键 词：全球变化 MODS 干旱区 绿洲生态系统 响应 

分 类 号：Q14[生物学—生态学] P467[生物学—普通生物学]