生态文明视角下的伊犁河谷绿洲土地生态安全评价及障碍因子诊断
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S181;X826

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新疆维吾尔自治区高校科研计划项目“基于生态文明视角的伊犁河谷绿洲土地生态功能演变及管控研究”(XJEDU2019SY011)


Evaluation of Land Ecological Security and Diagnosis of Obstacle Factors for Oasis Land in Yili River Valley from Perspective of Ecological Civilization
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    摘要:

    [目的] 基于生态文明视角对伊犁河谷绿洲生态安全问题进行研究,揭示影响土地生态安全的主要因素,为实现区域土地可持续利用提供合理化建议,促进生态文明建设。[方法] 采用PSR—熵权TOPSIS模型对2000—2018年伊犁河谷绿洲土地生态安全进行评价,结合评价结果,建立障碍因子诊断模型,进行障碍度诊断分析。[结果] ①总体来看伊犁河谷绿洲土地生态安全呈现缓慢提升态势,提升幅度较小,土地生态安全等级为Ⅲ级,土地生态安全为一般状态,期间存在波动变化,部分年份出现了小幅度下降; ②准则层土地生态安全状况变化显著,压力层面土地生态安全状况整体呈现下降趋势,状态与响应层面土地生态安全状况整体呈现上升趋势; ③土地生态压力层面障碍度呈现升高趋势,对土地生态安全水平提升的阻力逐渐增大,主要障碍因子有人均林草地面积、人口密度、人均耕地面积、农业化肥施用量。[结论] 伊犁河谷绿洲土地生态安全整体呈现向好趋势发展,但主要障碍因子影响显著,阻碍了提升速度,需要采取相应对策加以解决,促进伊犁河谷绿洲土地实现可持续利用。

    Abstract:

    [Objective] The ecological security of oasis land in Yili River valley was studied from the perspective of ecological civilization, and the main factors influencing the ecological security of land in this area were analyzed, in order to promote the construction of ecological civilization. [Methods] The PSR-entropy weight TOPSIS model was used to evaluate the ecological safety of oasis land in the Yili River valley from 2000 to 2018. The study results were used to establish a barrier factor diagnosis model to determine the ecological safety of oasis land in Yili River valley. [Results] ① Overall, the ecological safety of oasis land in the Yili River valley showed a slow upward trend with a slight increase. The ecological security level of land was grade Ⅲ, and the ecological security of land was in a general state, during which there have been fluctuations and changes, with a small decline in some years. ② The land ecological security situation in the standard layer changed significantly. In general, the situation concerning the ecological safety of soil in the pressure layer decreased, and the land ecological security at state and response levels showed an overall upward trend. ③ The barrier degree of land ecological pressure level showed an increasing trend, and resistance to the improvement of land ecological security level gradually increased. The main barrier factors included per capita forest and grass area, population density, per capita cultivated land area, application amounts of agricultural chemical fertilizer, and other indicators. [Conclusion] Overall, ecological security of oasis land in the Yili River valley showed a good trend, but the main obstacle factors have had a bad impact on improvement speed. Corresponding countermeasures should be taken to promote sustainable utilization of oasis land in the Yili River basin.

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刘志有,曲秀武,魏冉,闵廷冬,宁静.生态文明视角下的伊犁河谷绿洲土地生态安全评价及障碍因子诊断[J].水土保持通报,2022,42(1):137-143

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  • 收稿日期:2021-06-29
  • 最后修改日期:2021-08-24
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  • 在线发布日期: 2022-03-12
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