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Scientia Silvae Sinicae ›› 2014, Vol. 50 ›› Issue (5): 17-26.doi: 10.11707/j.1001-7488.20140503

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Temporal and Spatial Variation of Ecosystem Service Value in the Three Gorges Reservoir Region (Chongqing Section) Based on Land Use

Ma Jun1, Ma Peng1, Li Changxiao1, Peng Yue2, Wei Hong1   

  1. 1. Key Laboratory for Eco-Environment of the Three Gorges Reservoir Region of Ministry of Education Chongqing Key Laboratory of Plant Ecology and Resources Research in the Three Gorges Reservoir Region College of Life Sciences, Southwest University Chongqing 400715;
    2. Chongqing Forestry Research Institute Chongqing 400036
  • Received:2013-10-26 Revised:2014-03-28 Online:2014-05-25 Published:2014-06-06
  • Contact: 李昌晓

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Abstract:

Ecosystem services provide a wide range of essential goods and services to humanity. With deeply understanding of coupled human and natural systems, evaluation of ecosystem service value is becoming a hot spot of ecological economics and environmental economics. Based on land use data, ecosystem service value of the Three Gorges Reservoir Region (Chongqing Section) from 1986 to 2010 was calculated by using Costanza's method and modified ecosystem service value coefficients. The temporal and spatial variation of ecosystem service value was quantitatively analyzed to understand the ecosystem service value change and to provide useful information for policymakers concerned with sustainable development of the Three Gorges Reservoir Region. Results showed that during the past 25 years the ecosystem service value of the study area decreased at first and then increased across 1986 and 2010. Especially, after entering into the 21st century, change rate of the ecosystem service value was greatly increased. The ecosystem service value of the Three Gorges Reservoir Region (Chongqing Section) was 9.53×1010 Yuan, 9.48×1010 Yuan, 9.43×1010 Yuan, 9.68×1010 Yuan in 1986, 1995, 2000, and 2010, respectively. Forest land was the main provider for the ecosystem service value of the study region, and also contributed most to the total ecological service value. The spatial pattern of ecosystem service value indicated that high value areas mainly located in the east and south of the study region, and low value areas were in the west and north. Overall, in the past 25 years, the core of ecosystem service value moved to the southeast. The global spatial autocorrelation index ranged from 0.473 to 0.498 during the study period, and local spatial autocorrelation showed that ecosystem service value had a spatial connection. Sensitivity analysis indicated that the estimated ecosystem service value in the study area was inelastic to the value coefficients, and the results were credible. Linear regression analysis revealed that ecosystem service value had a significant negative correlation with population density, GDP and urbanization rate, whereas the value had a significant positive correlation with farming, forestry, animal husbandry and fishery GDP. In respect to future ecological environmental management of the Three Gorges Reservoir Region, more attentions should be paid to ecosystem services, especially for the forest land, grassland, and water area. It is also important to develop an efficient ecological industry, to control unreasonable city expansion, and to implement the sustainable development with social economy harmony with natural environment.

Key words: the Three Gorges Reservoir Region (Chongqing Section), ecosystem service value, temporal and spatial variation

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