水土保持率:概念内涵、阈值确定及实践应用
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

S157

基金项目:

水利部水利重大科技问题研究项目“新时代水土保持目标与对策研究”;国家自然科学基金项目“黄河流域水土保持率变化机制及阈值”(U2243212)。


Soil and Water Conservation Rate: Connotation of Concept, Threshold Determination and Practical Application
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    [目的] 确定全国及不同区域水土流失防治的适宜目标,帮助社会各界了解和应用水土保持率概念及相关研究成果,为促进新时代水土保持高质量发展提供有益参考。[方法] 根据2019年水利部首次提出的“水土保持率”指标及其专项研究成果,阐述了水土保持率概念的内涵及其阈值确定方法。以30 m分辨率网格为空间单元,基于土壤侵蚀分类分级、土地利用、地形地貌、植被覆盖等多源地理空间数据,分析计算了全国及各省份水土保持率阈值,并解读了水土保持率系列目标在中国水土保持目标责任考核和落实中的应用。[结果] 水土保持率概念的核心是表征符合自然规律并满足经济社会发展要求的水土流失防治适宜程度,远期应当包含减量、降级、增效等多维度的阈值体系,可综合评估区域水土流失防治现状及其所能达到的适宜程度。目前的水土保持率指标主要反映水土流失面积的减量适宜目标,已被用于美丽中国建设评估,并被作为中共中央办公厅、国务院办公厅《关于加强新时代水土保持工作的意见》中的核心指标。[结论] 建议基于社会—生态系统范式,在全面考虑自然与社会领域综合因素影响,本地和溢出维度不同效应协同,生态和经济层面多重目标权衡的基础上,深入研究不同地区水土流失消长变化阈值及评估方法等问题。同时,围绕流域系统综合治理的有关要求,关注梯田、林草、淤地坝、坡耕地侵蚀沟等主要治理措施或重点治理对象的适宜规模与合理布局等重大问题。

    Abstract:

    [Objective] The suitable targets for soil and water loss prevention and control in different provinces and all of China were determined in order to help people of all sectors of society in understanding and applying the concept of soil and water conservation rate (SWCR) and related research, thereby providing a useful reference for facilitating the high quality development of soil and water conservation in the new age. [Methods] Based on the concept and related research results of SWCR as first presented by the Ministry of Water Resources in 2019, the concept of SWCR was expounded and the threshold of SWCR was determined. A grid of 30 m resolution was used as the spatial unit, and the multi-source geospatial data (including classification and grading of soil erosion, land use, topography, vegetation cover, etc.) were used to calculate and analyze the thresholds of SWCR in China and different provinces, and to explain the application of serial targets for SWCR in the liability assessment and implementation of targets for soil and water conservation in China. [Results] The core connotation of concept for SWCR represents the appropriate degree of soil erosion control that conforms to the natural law and meets the requirements of economic and social development. In the future, SWCR will become the multi-dimensional threshold system that includes reducting area and downgrading intensity of soil and water loss, and enhancing function of soil and water conservation. It could be used to comprehensively evaluate the current situation of regional soil and water loss control, and their appropriate degree could be achieved. At present, SWCR mainly reflects the appropriate goal of reducing the area of soil and water loss, which has been employed in the assessment of “Beautiful China Construction”, and which has become the core indicator in Opinions on Strengthening Soil and Water Conservation in the New Age that was printed and distributed by the General Office of the CPC Central Committee and the General Office of the State Council. [Conclusion] Based on the social ecosystem paradigm, it is suggested to study the threshold value and assessment methods of the change of soil and water loss in different regions at different levels based on comprehensive consideration of the influence of natural and social factors, the synergy of different local and spillover effects, and the balance of multiple objectives at ecological and economic levels. At the same time, focusing on the relevant requirements of the comprehensive management of the basin system, we should pay attention to the appropriate scale and reasonable layout of the main control measures or key objects, such as terraces, forest and grass, silting dam, slope cropland erosion gullies, etc.

    参考文献
    相似文献
    引证文献
引用本文

曹文洪,宁堆虎,秦伟.水土保持率:概念内涵、阈值确定及实践应用[J].水土保持通报,2023,43(1):409-416

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2023-01-06
  • 最后修改日期:2023-01-20
  • 录用日期:
  • 在线发布日期: 2023-04-08
  • 出版日期: