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基于N-SPECT模型的胶东半岛土壤侵蚀及泥沙入海通量研究
Authors
于良巨
侯西勇
常远勇
毋亭
Publication date
1 January 2015
Publisher
Abstract
目的探讨土壤侵蚀与土地利用的关系,为胶东半岛海岸带水环境保护和治理以及流域综合管理提供必要的技术支持和参考依据。方法在RS-GIS技术支持下,基于N-SPECT模型,对胶东半岛2006—2010年土壤侵蚀量及泥沙入海通量进行模拟。结果土壤侵蚀高值区集中于半岛东部和南部,低值区主要分布于半岛中部和中南部。大沽河流域、五龙河流域和大沽夹河流域3大流域对整个胶东半岛的土壤侵蚀贡献最大。针对3大流域之外的其他半岛区域,按照汇水区划分岸段,各岸段单位长度泥沙入海通量的空间差异显著,青岛市城阳区海岸、青岛南端(胶南)海岸、莱州湾东部海岸和威海西南端海岸泥沙通量最大。结论土壤侵蚀和产沙与源区土地利用结构密切相关。总体而言,耕地主导型区域是土壤侵蚀严重的区域,而林地和草地具有减轻土壤侵蚀的作用
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Last time updated on 24/06/2021