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Volume 35 Issue 5
Oct.  2016
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Article Navigation >  CARSOLOGICA SINICA  > 2016  >  35(5): 586-593
DU Xuelian, WANG Shijie, XIONG Qianghui, PENG Tao, CHEN Anyun, ZHANG Lin, CAI Xianli. Evaluation on effect of small catchment comprehensive control in karst rocky desertification areas based on fuzzy comprehensive evaluation method: A case study of the Chenjiazhai catchment in Puding county, Guizhou Province[J]. CARSOLOGICA SINICA, 2016, 35(5): 586-593. doi: 10.11932/karst20160515
Citation: DU Xuelian, WANG Shijie, XIONG Qianghui, PENG Tao, CHEN Anyun, ZHANG Lin, CAI Xianli. Evaluation on effect of small catchment comprehensive control in karst rocky desertification areas based on fuzzy comprehensive evaluation method: A case study of the Chenjiazhai catchment in Puding county, Guizhou Province[J]. CARSOLOGICA SINICA, 2016, 35(5): 586-593. doi: 10.11932/karst20160515
shu

Evaluation on effect of small catchment comprehensive control in karst rocky desertification areas based on fuzzy comprehensive evaluation method: A case study of the Chenjiazhai catchment in Puding county, Guizhou Province

doi: 10.11932/karst20160515
  • 1.

    School of Economic, Guizhou University of Finance and Economics；Puding Karst Ecosystem Research Station, Chinese Academy of Sciences

  • 2.

    Puding Karst Ecosystem Research Station, Chinese Academy of Sciences；State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences

  • 3.

    School of Economic, Guizhou University of Finance and Economics

  • Publish Date: 2016-10-25
    Abstract
  • The Chenjiazhai catchment is located on the right bank of the Sancha river, the upper reaches of Wujiang river, northeast of Puding county, Anshun City, Guizhou Province, about 8.5 km to Puding county. Its highest elevation is 1,485 m， and the area is characterised by typical peak-cluster depression landforms in the karst plateau of central Guizhou Province. Based on the Puding karst ecosystem observation and research station of the Chinese Academy of Sciences (CAS), the slope water system facilities including road surface water collection, ditch diversion and water storage pool, which rely on the water conservancy technology and networked micro-irrigation technology, were constructed in the Chenjiazhai catchment. In order to improve the reliability and scientificity of comprehensive control measures, and to provide scientific basis for the government to make macro policy decision for the karst rocky desertification control, the effect of comprehensive control in the Chenjiazhai catchment was evaluated by establishing an index system and fuzzy comprehensive evaluation method. The data of environmental, economic and social indicators before and after the comprehensive control show that the social economy has been developed and the ecological environment improved obviously after comprehensive management in the study area. Due to the development of high-efficiency mountainous agriculture by planting Capsicum annuum, Abelmoschus esculentus L.Moench, Fallopia multiflora (Thunb.) Harald, Pinellia temata (Thunb.) Breit.and Salvia miltiorrhiza Bge. in valleys, the per capita income, labor productivity, capital investment ratio and land productivity have been enhanced greatly. The commodity ratio of agricultural products and the coverage of forest and grass increased, with the soil erosion modulus and rocky desertification area decreased through the forest transformation on slopes. Poverty incidence, rural Engel coefficient and illiteracy ratio declined. According to the fuzzy comprehensive evaluation method, after the comprehensive control, the economic benefit level turned from "poor" to "medium", ecological benefit level turned from "poor" to "good", social benefit level remains "poor", and the comprehensive evaluation level turned from "poor" to "medium", which suggests that the comprehensive control of the karst rocky desertification in Chenjiazhai catchment has been to a certain extent successful. The economic benefit increased at the highest rate, which was benefited from the drought-resisting facilities as the use of road surface water and ponding water for irrigation purpose in the study area. The high-efficient usage of water resources and flood storage technology in the study area have played a model role in drought resistance and mountain efficient agriculture development in karst areas. 

     

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