基于SWAT模型的淮河上游土地利用变化情景的水文响应

发布时间：2018-06-06 12:50

本文选题：淮河流域 + 土地利用情景　；参考：《南水北调与水利科技》2016年05期

【摘要】：淮河流域不合理的土地利用是导致水土流失的重要因素之一,探究土地利用变化下的水文响应规律是开展水土保持工作的重要前提。以淮河王家坝水文站以上流域为研究区域构建SWAT模型,并验证模型的适用性;对研究区耕地进行适宜性评价,结合2000年土地利用现状构造最佳土地利用情景;利用验证好的SWAT模型分析最佳土地利用情景、生态保护情景、土地利用现状情景的水文响应。结果表明,相比2000年土地利用,生态保护情景水文响应变幅较小,而最佳土地利用情景下41.29%的耕地转化为林地,年、月均地表径流和年、月均泥沙量减小,年、月均地下径流增加,年、月均蒸发量变化不大。说明最佳土地利用状态有助于提高研究区域涵养水源、保持水土的能力,且在汛期效果较为明显
[Abstract]:Unreasonable land use in Huaihe River Basin is one of the important factors leading to soil and water loss. It is an important prerequisite to study the hydrological response law of land use change to carry out soil and water conservation work. Taking the basin above the Wangjiaba Hydrologic Station of Huaihe River as the study area, the SWAT model was constructed and the applicability of the model was verified, and the suitability evaluation of cultivated land in the study area was carried out, and the optimal land use scenario was constructed according to the current land use situation in 2000. The hydrological responses of the best land use scenarios, ecological protection scenarios and land use status scenarios were analyzed by using the verified SWAT model. The results showed that the hydrological response of ecological protection scenarios was smaller than that of land use in 2000, while 41.29% of cultivated land was converted into woodland under the optimal land use scenario. The monthly average underground runoff increased, but the annual and monthly evaporation did not change much. It shows that the optimal land use condition is helpful to improve the capacity of water conservation and soil conservation in the study area, and the effect is obvious in flood season.
【作者单位】：三峡大学水利与环境学院;水资源安全保障湖北省协同创新中心;
【基金】：水利部“十二五”公益性行业专项经费项目(201301066) 国家自然科学基金项目(51409152)~~
【分类号】：P333

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