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    漫川漫岗黑土区水土流失综合治理范式

    Paradigm of integrated soil and water conservation in rolling hill regions with black soil in Northeast China

    • 摘要: 漫川漫岗黑土区是我国东北商品粮主产区和黑土坡耕地最集中的地方,也是坡耕地水土流失最严重的地区。根据漫川漫岗黑土区水土流失规律和特点,在已有水土流失治理模式的基础上,通过总结该区水土流失综合调控机制,凝练基于粮食安全的黑土区长坡缓坡水土流失综合治理范式,并对形成的水土流失综合治理范式体系的结构进行解析,对其推广应用效益进行分析,以补充和完善黑土区水土流失综合调控理论。结果表明:1)漫川漫岗黑土区水土流失治理应以坡耕地水土流失控制为主,水土流失综合治理调控主要由地表径流调控、沟道侵蚀调控和土地生产力调控3部分构成;2)基于粮食安全的黑土区长坡缓坡水土流失综合治理范式,以生态安全保障和粮食安全保障2大体系为支撑,系统结构主要包括水土流失立体防护体系结构和生态农业技术体系结构及二者之间的耦合;3)该范式可为促进东北漫川漫岗黑土区生态、社会和经济更协调发展提供科学参考和实践样板。

       

      Abstract: Rolling hill regions are main grain producing areas in Northeast China, where are characterized by seriously soil and water loss on slope farmland. Based on the characteristics of black soil erosion and the experience on soil erosion control in rolling hill regions of Northeast China, the mechanism of integrated soil erosion control is summarized. Moreover, the paradigm of integrated soil and water conservation on farmlands with long and gentle slope target to food security is presented. Structures of the paradigm system are analyzed, and also the benefits from the applications of the paradigm system are analyzed. Thus the study could supply the integrated soil erosion control theory in rolling hill regions with black soil in Northeast China. The results show that integrated control on soil and water loss in rolling hill regions with black soil should be dominated by the erosion control on slope farmland, and mainly regulated by the surface runoff control, channel erosion control and land productivity control. The paradigm system is supported by two sub-systems, and they are ecological security sub-system and food security sub-system. The structures of the paradigm system are consist of the structure of soil erosion protection system, structure of ecological agriculture technique system and their coupling. And the results suggest that this kind of paradigm system could provide scientific and practical references for the coordinated development of socio-economic-environmental systems in rolling hill regions with black soil of Northeast China.

       

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