RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2018, Vol. 27 >> Issue (06): 1397-.doi: 10.11870/cjlyzyyhj201806024

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 Spatial-temporal Evolvement of Ecosystem Service Value in Hunan Province Based on LUCC

XIONG Ying1,2,ZHANG Fang-ming1,2,GONG Chang-an3, LUO Peng1   

  1. (1.College of Architecture, Changsha University of Science and Technology, Changsha 410114, China; 2. Research Center of Resource Environment and Urban Planning, Changsha 410114, China;3.Hunan Institute of Economic Geography, Changsha 410004, China)
  • Online:2018-06-20

Abstract:

Based on the data of LUCC (Land Use/Cover Change) extracted from remote sensing interpretation in the Hunan Province from 1990 to 2015, spatial and temporal patterns and dynamic evolution of ecosystem service values (ESV) has been analyzed using ecological value assessment model and GIS spatial statistics method. The results showed that the ESV in Hunan Province was decreasing generally, of which the most obvious reduction was the ESV of cultivated land, forest land and grassland system. Significant differences in spatial patterns of ESV existed in different analysis units, in which high value units and low value units were infiltrated into each other, while high value units and sub-high value units embraced low value units. In general, high value units and sub-high value units were distributed homogeneously, while low value units and sub-low value units concentratedly and medium value units randomly. Significant spatial autocorrelation and high/low clustering were identified for ESV and its dynamic changes, but the trend level has weakened, which may be consistent with the disorder and complexity of ecosystem change. We conclude that a series of policies of Returning Farmland to Lakes, Returning Farmland to Forest and Green Hunan, have brought about increment of ESV and aggregation of high values (hot spots). In the meantime, urbanization, urban sprawl and farmland development resulted in a loss of ESV and led to the distribution of low values (cold spots) in the densely urban areas and the area of abundant water and land resources.
Key words:land use and land cover change (LUCC); ecosystem service values (ESV); spatial pattern; spatial and temporal evolvement; Hunan Province

 

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