[1]YAN Tie-ping,LIAO Wei,LI Lu,et al.Optimization of Land Use Structure and Spatial Pattern for the Danjiangkou Reservoir Area[J].Research of Soil and Water Conservation,2012,19(01):11-15.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
19
Number of periods:
2012 01
Page number:
11-15
Column:
Public date:
2012-02-20
- Title:
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Optimization of Land Use Structure and Spatial Pattern for the Danjiangkou Reservoir Area
- Author(s):
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YAN Tie-ping1, LIAO Wei1, LI Lu2, SHI Zhi-hua3
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1. The Center of Soil and Water Conservation Monitoring, Hubei Province, Wuhan 430071, China;
2. Hubei Water Resources Research Institute, Wuhan 430070, China;
3. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Yangling, Shaanxi 712100, China
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- Keywords:
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land-use change; Markov prediction model; cellular automata model; Danjiangkou reservoir area
- CLC:
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F301.2
- DOI:
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- Abstract:
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The Danjiangkou reservoir lies in the upper Hanjiang Basin and is the source of water for the Middle Route Project (MRP) under the South-to-North Water Transfer Scheme (SNWT) in China. The situation of eco-environment and the water quality security of the Danjiangkou Reservoir Area (DRA) play important roles in local coordinated development of economic and social development and environmental protection and would determine whether the MRP will succeed or not. The scientific and quantitative assessment and optimization of land use structure and spatial pattern is significant to the sustainable development of the DRA. This study aimed to predict land-use change trend of Danjiangkou reservoir area in 2020 by Markov prediction model and cellular automata model, in the support of the RS and GIS and based on the TM remote sensing data of Danjiangkou reservoir area during 1990 and 2007. The predicted results of the land use amount are acquired dynamically by the Markov prediction model, and with the total land of demand from a macroscopic viewpoint and the dynamic balance of land supply from a microscopic viewpoint as the principle, the distribution of land-use is achieved by Cellular Automata model. The results showed that in the period of these seventeen years from 1990 to 2007, great changes have taken place on the land use types in the study area, which was mainly characterized as the greatly increased forest, shrub and residential area and the greatly decreased farmland. In the 2020, by optimal allocation, the area of the croplands and unutilized land decrease rapidly, and the proportion of the forest land area and garden area increase accordingly, which healthily promote the development of eco-environment. The results showed that CA-Markov model make the fullest use of the simulating capability to space changes of complex system of CA model and the advantage of long-term prediction of Markov model, which would provide an important reference to reveal the dynamic mechanism of land-use change.