Analyses on grassland ecosystem services and its indexes for assessment

Abstract

Abstract: Grassland ecosystem services imply the natural environmental conditions and their effectiveness formed and sustained by grassland ecosystem and its ecological processes,on which,human life relies for existence.Grassland ecosystem services can be divided into four groups: provisioning,regulating,cultural,and supporting services based on new study reports.Provisioning services consist of the products from livestock and vegetation in grassland.Regulating services imply the benefits obtained from the regulation of ecosystem processes,including weather regulation,soil C fixation,water storage,erosion control,air quality purification,waste treatment,and nutrients cycle.Cultural services include the nonmaterial benefits people obtained through spiritual enrichment,cognitive development,recreation,and aesthetic experiences,such as cultural diversity,recreation and ecotourism.Supporting services are foundation of the production of all other ecosystem services,including sand dune fixation,soil improvement and providing of habitat.Based on the above analyses,an index system of assessment of grassland ecosystem services,which consists of 13 function indexes,was established.

Key words: Pinus koraiensis, Stem respiration, Growth respiration, Maintenance respiration, Q₁₀

CLC Number:

X176

ZHAO Tongqian, OUYANG Zhiyun, ZHENG Hua, WANG Xiaoke，MIAO Hong. Analyses on grassland ecosystem services and its indexes for assessment[J]. cje, 2004, (6): 155-160.

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