PROGRESS IN GEOGRAPHY ›› 2012, Vol. 31 ›› Issue (7): 970-977.doi: 10.11820/dlkxjz.2012.07.016

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Changes of the Value of Ecosystem Services in the Sanjiangyuan Region Based on Land Use Data

CHEN Chunyang1,2, DAI Junhu1, WANG Huanjiong1,2, LIU Yachen3   

  1. 1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
    3. College of Urban and Environmental Science, Northwest University, Xi’an 710127, China
  • Received:2012-01-01 Revised:2012-05-01 Online:2012-07-25 Published:2012-07-25

Abstract: Under the framework of Millennium Ecosystem Assessment (MA), by means of market value method, shadow project method, the opportunity cost method and some other methods, based on LUCC data, this paper carried out a dynamic valuation of ecosystem services in the Sanjiangyuan Region (Three-River Headwater Region), including food production, climate regulation, gas regulation, water conservation, soil retention, nutrient regulation, and waste degradation. The results showed that: the economic value of ecosystem services in the study area was 602.94×108 yuan, 601.58×108 yuan, 603.60×108 yuan and 669.90×108 yuan in 1985, 1996, 2000 and 2008, respectively, which showed a decreasing trend at first, and an increasing one in the subsequent period. In addition, the proportion of climate regulation and water conservation in the total value was high; the ecosystem services of grassland and forests played a significant part in maintaining ecosystem balance and ensuring regional sustainable development.

Key words: ecosystem service, ecosystem services valuation, the Sanjiangyuan Region