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    基于分区侵蚀治理的十大孔兑近自然生态修复体系构建

    Research on the Construction of a Natural Ecological Restoration System Based on Zoning Erosion Control in the Ten Tributaries

    • 摘要: 在分析不同区域侵蚀机理和治理现状的基础上,结合各类侵蚀和地貌条件,提出了流域泥沙治理应遵循“因地制宜、分区施策”的方略,进而构建了十大孔兑近自然生态修复体系的总体框架.明确上游丘陵沟壑区侵蚀源固控、上中游复合侵蚀区减蚀、中游沙漠区风沙阻控、下游平原区泥沙处置和雨洪水补入黄河等技术体系.同时,建议进一步开展十大孔兑分区治理对内蒙古黄河干流河床减淤效果的预测研究,归纳总结不同技术构建的关键技术与待明确的研究问题.研究成果可为同类地区的泥沙阻控与近自然修复提供范式和模版,为提升黄河流域生态安全韧性提供技术支撑.

       

      Abstract: Based on the elaboration of the erosion mechanisms and governance status in differentregions,this paper proposes that the sediment management in the basin must adopt the strategy of “tailoring measures to local conditions and implementing policies by region” in light of the distinct erosion and geomorphic features.It then proceeds to conduct research on the framework for constructing a near-natural ecological restoration system for the Ten Tributaries,suggesting technical systems such as erosion source control in the hilly and gully areas in the upper reaches,erosion reduction in the upper and middle reaches with complex erosion features,wind-sand control in the desert areas in the middle reaches,sediment disposal in the plain areas in the lower reaches,and rainwater and floodwater replenishment to the Yellow River.It also suggests that it is necessary to conduct research on the prediction of the effect of regionalized governance of the Ten Tributaries on the sediment reduction of the main stream of the Yellow River in Inner Mongolia,and summarize the key technologies and clear research issues for the construction of different technical systems.The research results are expected to provide a model and template for sediment control and near-natural restoration in similar regions,and offer technical support for enhancing the ecological security resilience of the Yellow River Basin.

       

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