Regionalization of Soil and Water Conversation in Hanzhong City, Shaanxi Province
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S157

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    Abstract:

    [Objective] Based on the original regionalization of Hanzhong City, Shaanxi Province in 1986, to complete the link between provincial and municipal divisions, and further integrate the characteristics of soil erosion in Hanzhong City in order to provide supports for the soil and water conservation work in this area.[Methods] By overlapping map analysis, and combined with the natural conditions and the development trend of soil and water loss, soil and water conservation zone in Hanzhong City was re-divided.[Results] The city was divided into four areas including the northern water source conservation ecological maintenance area, the central human settlement environmental water quality maintenance area, the western water source conservation water quality maintenance area, and the southern soil conservation ecological maintenance area.[Conclusion] The northern water source conservation ecological maintenance area should be paid attention to the protection and rational development of natural forest and grass resources. Deforestation should be strictly prohibited, and the shifting cultivation in steep slopes rim should be changed into strip intercropping. The central human settlements water quality maintenance area should be paid attention to revetment of beaches, rectify rivers, continue to do a good job in urban greening, build high-standard basic farmland, optimize the ecological agriculture environment, and improve the living environment. The western water source conservation water quality maintenance area should improve the ability to control surface source pollution. For the types of land used for sloping farmland, excavation exposed surface and grassland, remediation and vegetation restoration should be carried out well to maintain the water quality of the water source area. In the southern soil conservation ecological maintenance area, it is necessary to carry out hill closure and afforestation in a certain area of sloping farmland and some gentle slopes above 25°, returning farmland to forests and grassland, so as to effectively protect forest grass and soil resources, at the same time, economic forest fruits with high economic benefits and remarkable ecological benefits should be promoted.

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朱一梅,张孝中,孙虎.陕西省汉中市水土保持区划[J].水土保持通报英文版,2018,38(5):149-153,160

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History
  • Received:April 21,2018
  • Revised:April 25,2018
  • Adopted:
  • Online: November 10,2018
  • Published: