陕西省水土保持率远期目标值与分阶段目标值的确定与探讨
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S157.2

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陕西省水利厅项目“陕西省水土保持率测算”〔2022年省级水利发展资金项目陕西省水土保持率目标值确定(BY2022-TP-009)〕


Determination and Discussion of Long-term Target Value and Stage Target Values of Soil and Water Conservation Rate in Shaanxi Province
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    摘要:

    [目的] 探讨和明确陕西省水土保持率远期目标值与分阶段目标值,为准确评价该区水土保持工作成效和科学推进水土流失综合防治工作提供科学支撑。 [方法] 综合考虑陕西省社会经济条件与自然条件,分析对应年度水土流失面积变化情况及水土保持率变化情况,结合各年度水利年鉴和全国水土保持规划实施情况考核评估结果,结合土壤侵蚀分类分级、土地利用、海拔地形、植被覆盖、地理空间数据,研判现状条件下陕西省水土流失治理形势,确定陕西省2050年水土保持率远期目标值,及2025,2030和2035年分阶段目标值,并结合目标责任考核,提出陕西省水土保持率的实现途径。 [结果] ①自2011年以来陕西省水土流失面积年均减少量不断降低,治理难度不断加大,陕西省水土流失面积由72 686.00 km2降低至2022年的62 637.02 km2; ②至2050年,水土流失治理措施全部实施后,预计削减水土流失面积21 607.05 km2,水土保持率远期目标值为79.02%; ③2025,2030和2035年分阶段目标值分别为71.42%,73.97%和75.62%。 [结论] 科学合理地确定陕西省水土保持率目标值,可以满足陕西省落实生态文明建设目标评价考核与水土保持目标责任考核等工作的需求。

    Abstract:

    [Objective] The long-term target value and stage target values of soil and water conservation rate were discussed and defined in Shaanxi Province in order to provide scientific support for accurately evaluating the effect of soil and water conservation work and to scientifically promote the comprehensive prevention and control of soil and water loss. [Methods] The social and economic conditions and the natural conditions of Shaanxi Province were comprehensively considered to analyze the change of soil and water loss area and the change of soil and water conservation rate using the assessment results from annual water conservancy yearbooks and national soil and water conservation planning. Spatial data for soil erosion classification, land use, elevation, topography and vegetation cover data were obtained. The situation of soil and water loss control in Shaanxi Province was studied. The long-term target value of soil and water conservation rate in 2050, and the stage target values in 2025, 2030 and 2035 were determined. These results were combined with a target responsibility system assessment, and a process to achieve the target rate of soil and water conservation was proposed. [Results] ① Since 2011, the area of soil and water loss for the entire province has decreased from 72 686 km2 to 62 637 km2 in 2022. ② By 2050, after implementation of soil and water loss control measures, the area of soil and water loss is expected to be reduced by 21 607 km2 and the long-term target value of soil and water conservation rate will be 79.02%. ③ The stage target values for 2025, 2030, and 2035 will be 71.42%, 73.97%, and 75.62%, respectively. [Conclusion] Scientific and reasonable determination of the target value of soil and water conservation rate in Shaanxi Province can meet the needs of carrying out the assessment of the ecological civilization construction target and the assessment of soil and water conservation target in Shaanxi Province.

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郝惠莉,张镇玺,袁瀛,苗斌侠,李怀霄,陈晓荣,王盼.陕西省水土保持率远期目标值与分阶段目标值的确定与探讨[J].水土保持通报,2024,44(2):205-214

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  • 收稿日期:2023-08-11
  • 最后修改日期:2023-11-02
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  • 在线发布日期: 2024-06-05
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