新疆喀什噶尔河流域土壤盐渍化分布特征及时空演化分析
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新疆大学地质与矿业工程学院

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S156.41

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Distribution characteristics and spatial-temporal evolution of soil salinization in the Kashgar River Basin
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College of Geology and Mining Engineering,Xinjiang University

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    摘要:

    喀什噶尔河流域位于新疆喀什地区,属干旱半干旱气候,受自然条件及人类农业活动影响,流域内土壤盐渍化问题十分严重。本文以喀什噶尔河流域为研究对象,根据取样检测的土壤易溶盐数据及收集到的研究区往年土壤盐渍化相关数据,采用地统计学、GIS技术、动态度模型、重心迁移模型等方法,总结了研究区土壤盐渍化分布特征,并分析了时间尺度上的盐渍化演化规律。分析结果表明:(1)研究区内轻度、中度土壤盐渍化分布在流域中上游,重度、极重度盐渍化则分布在流域中下游;(2)整个研究区内土壤盐渍化在1970-2010年间总体上呈加速恶化的态势,在之后的2010-2019年间,盐渍化程度呈波动式减缓的态势;(3)研究区内轻度和中度土壤盐渍化重心向西南方向及阿克陶及英吉沙一带移动,重度和极重度盐渍地的重心则往东北方向及伽师县和岳普湖县一带移动。研究结果对研究区的土壤盐渍化治理及农业可持续发展具有现实意义。

    Abstract:

    Kashgar river basin is located in Kashgar region in the southwest of Xinjiang. It has an arid and semi-arid climate. Affected by natural conditions and human agricultural activities, the problem of soil salinization in the basin is very serious. Taking Kashgar River Basin as the research object, according to the sampled and detected soil soluble salt data and the collected soil salinization related data in the study area in previous years, this paper summarizes the distribution characteristics of soil salinization in the study area by using geostatistics, GIS technology, dynamic degree model and gravity center transfer model, and analyzes the salinization evolution law on time scale. The results show that: (1) The mild and moderate soil salinization in the study area is distributed in the middle and upper reaches of the basin, while the severe and extremely severe salinization are distributed in the middle and lower reaches of the basin; (2) The soil salinization in the whole study area generally accelerated from 1970 to 2010, and the degree of salinization fluctuated and slowed down from 2010 to 2019; (3) The center of gravity of mild and moderate soil salinization in the study area moves to the southwest and Aktao county and Yingjisha county, while the center of gravity of severe and extremely severe saline land moves to the northeast and Jiashi county and Yuepuhu county. The research results have practical significance for soil salinization control and agricultural sustainable development in the study area.

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申得有,李升,高远,等. 新疆喀什噶尔河流域土壤盐渍化分布特征及时空演化分析[J]. 科学技术与工程, , ():

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  • 收稿日期:2021-12-24
  • 最后修改日期:2022-04-28
  • 录用日期:2022-04-30
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