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Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (19): 93-103.doi: 10.11924/j.issn.1000-6850.casb19040015

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Salinized Soil in Oasis of Manas River Basin: Interannual Dynamic Change

Zhang Yunyun1, Zhang Li1, Dong Gaoquan1, Han Zhongling2, Cheng Yongxiang1(), Ma Miao1   

  1. 1College of Life Sciences, Shihezi University, Shihezi Xinjiang 832000
    2College of Information Science and Technology, Shihezi University, Shihezi Xinjiang 832000
  • Received:2019-04-03 Revised:2019-06-17 Online:2020-07-05 Published:2020-07-08
  • Contact: Cheng Yongxiang E-mail:chengyongxiang_613@163.com

Abstract:

The paper aims to explore the interannual variation of salinized soil in oasis of Manas River basin, and analyze the change causes. Based on the analysis of physicochemical properties and spectral characteristics of salinized soil, we constructed the soil salinization index SSI, and rated the salinized soil. The results showed that: 9.45×104 hm2 salinized soil in Manas River basin was successfully improved during 1990-2014, and the fragmentation and fractal dimension of salinized soil landscape increased; compared with the degree of saline division in 1990, the salinized soil in cultivated land in 2014 had a tendency of mild conversion; the salinity of the typical salinized soil which had not been reclaimed from 1990 to 2014 tended to be converted to a severe degree, and their vegetation community structure tended to be simple. SSI can be applied to the qualitative analysis and quantitative analysis of salinized soil, and the results can provide references for scientific control of salinized soil in agricultural sector.

Key words: Manas River basin, salinized soil, salinized soil index, interannual dynamics, community structure, trickle irrigation

CLC Number: