塔里木河流域耕地面积动态变化特征及驱动因子
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国家科技部基础性工作专项“中国北方内陆盐碱地植物种质资源调查及数据库构建”(2015FY110500-16);国家自然科学基金项目(31370551;41471099;31400466);中国科学院“西部之光”人才培养计划(XBBS-2014-13);中国科学院特色研究所主要服务项目(TSS-2015-014-FW-2-2)


Change Features of Cultivated Land Resources and Its Driving Factors in Tarim River Basin
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    摘要:

    [目的] 对塔里木河流域耕地面积动态变化特征及驱动因子进行分析,为实现区域内耕地保护与可持续利用提供理论依据。[方法] 依据1990-2014年塔里木河“九源一干”区域各地州的统计资料,分析塔里木河流域耕地面积和重心的变化特点,将主成分分析与多元回归分析相结合,探讨耕地面积变化的驱动因子。[结果](1)1990-2014年,耕地总面积由1.01×106 hm2增加到2.05×106 hm2,人均耕地面积由0.131 hm2增加到0.194 hm2,耕地面积重心向东偏北方向移动61.10 km;(2)社会经济发展、人口增加和农业生产发展是耕地面积变化的主要驱动因子;(3)建立了耕地面积与驱动因子之间的多元线性回归模型(R2=0.960),检验结果表明模拟值与实际值之间没有显著差异(p>0.05)。[结论] 耕地的面积和重心始终处于一个动态变化的过程中,人文因素是影响耕地特征变化的主要原因。

    Abstract:

    [Objective] Dynamic change features of agricultural area and the driving factors were elucidate to provide theoretical foundation for the sustainable utilization and protection of cultivated land in Tarim River basin. [Methods] Change characteristics of agricultural area and superficial orthocenter were analyzed according to the statistical data of all regions, including so-called“nine sources and one main stream”. Both PCA and multivariate regression analysis were used to detect the driving factors. [Results] (1) Total cultivated area from 1.01×106 hm2 to 2.05×106 hm2, from 0.131 hm2 to 0.194 hm2 for each person. Orthocenter of the agricultural area moved northeastward with a distance about 61.10 km. (2) Three main factors as socioeconomic development, increase in population and development of agricultural production drove the changes of agricultural area. (3) The established multi-linear regression model (R2=0.960) between agricultural area and driving factors showed that there was no significant difference(p>0.05) between the simulated values and the actual values. [Conclusion] It was always in a dynamically changing status for agricultural area and orthocenter. Human factors were the major influencing cause of the cultivated land.

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王希义,徐海量,潘存德.塔里木河流域耕地面积动态变化特征及驱动因子[J].水土保持通报,2017,37(2):327-332

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  • 收稿日期:2015-07-11
  • 最后修改日期:2015-12-23
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  • 在线发布日期: 2017-05-10
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