摘要
荒漠生态系统是整个生物圈中分布较广的一个系统,是陆地生态系统中一个重要的子系统。开展荒漠生态系统服务价值研究和评价,对荒漠生态系统重要性认识和管理具有重要的现实意义。本文基于中国沙漠(地)生态系统的生态水文过程、水平衡机理和水文调控功能等,对其在淡水提供、原盐生产、水源涵养和气候调节方面的物质流———水资源进行了核算,结合不同类型生态服务价值通量,初步评估了中国荒漠生态系统在水文调控方面的服务价值。结果表明:中国沙漠(地)生态系统水文调控方面的生态服务价值为每年5 510.05亿元,其中供给服务价值370.42亿元,调节服务价值5 139.63亿元,分别占总服务价值的6.72%和93.28%。
Desert ecosystem is a wide distributed system in the global biosphere, and also an important sub- system in the land ecosystem. Evaluation on the desert ecosystem service has important practical signifi- cance on the acknowledgement to the desert ecosystem importance and management on the ecosystem. Based on the water process, water balance and water regulated function of the desert ecosystem, in this pa- per we calculated the water resources flow in the water supply for the daily use and other economic sections, salt production, water resources purification and storage and climate regulation, and combined with the dif- ferent type of ecosystem service price flux, the desert and sandy land ecosystem service of water regulation was evaluated finally. The result showed that the total desert ecosystem service of water regulation was 5 510.05 × 108 ￥ per year, and within it the provisioning services value was about 370.42× 108 ￥ per year, the regulating services value was about 5 139.63× 108 ￥ per year, and the two service accounted to the to- tal value 6.72 % and 93.28 %, respectively.
出处
《中国沙漠》
CSCD
北大核心
2013年第5期1568-1576,共9页
Journal of Desert Research
基金
林业公益性行业科研专项经费项目(201004010-05)
国家科技支撑计划项目(2011BAC07B05)资助
关键词
生态服务
沙漠
沙地
生态系统
水文调控功能
价值评估
ecosystem service
desert and sandy land ecosystem
water process and regulating function
e-valuation
