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| 东南沿海地区小流域土地利用/覆被变化的水文效应 | |
| 引用本文： | 杨柳,陈兴伟,许有鹏,刘梅冰,胡春生.东南沿海地区小流域土地利用/覆被变化的水文效应[J].水土保持通报,2015,35(2):70-75. |
| 作者姓名： | 杨柳 陈兴伟 许有鹏 刘梅冰 胡春生 |
| 作者单位： | 1. 南京大学地理与海洋科学学院,江苏南京210093;福建师范大学地理科学学院,福建福州350007 2. 福建师范大学地理科学学院,福建福州,350007 3. 南京大学地理与海洋科学学院,江苏南京,210093 |
| 基金项目： | 福建省教育厅项目“流域施肥的时空分配对山美水库N污染特性的影响”(JB12038);福建科技厅省属公益类科研院所青年科研项目(2014R1034-4);国家自然科学基金重点项目(40730635) |
| 摘 要： | 目的]研究我国东南沿海小流域土地利用/覆被变化的水文效应,为该区水土资源合理配置和可持续发展提供科学依据。方法]以东南沿海福建省晋江山美水库集水区为例,运用SWAT水文模型。结果](1)研究区土地利用变化表现为林地转向园地和建设用地、耕地转向建设用地的特征。(2)固定其他条件,将构建的模型2006年土地利用数据替换为1995年,对比分析发现2000—2010年全流域和典型子流域的年径流深增加,洪水期平均径流增加,枯水期径流基本减少。(3)从全流域空间角度看,径流量均增大,特别是研究区西部地区和东南部地区;同时径流量变率增大,稳性减小。(4)园地、林地、建设用地和水田是驱动区内水文变化的主要因子。结论]研究区土地利用与覆被变化导致"洪水量更大,枯水量更小"的径流变化趋势。河川径流的变化受各地类变化的组合叠加效应影响,这种叠加效应还须进一步研究。 |
| 关 键 词： | SWAT模型 日径流过程模拟 土地利用/覆被变化 水文效应 东南沿海区 小流域 |
| 收稿时间： | 2014/1/21 0:00:00 |
| 修稿时间： | 2014/4/12 0:00:00 |
Hydrological Responses to Land Use and Cover Change in a Small Watershed of Southeast China Coast Area |
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| YANG Liu,CHEN Xingwei,XU Youpeng,HU Chunsheng.Hydrological Responses to Land Use and Cover Change in a Small Watershed of Southeast China Coast Area[J].Bulletin of Soil and Water Conservation,2015,35(2):70-75. | |
| Authors: | YANG Liu CHEN Xingwei XU Youpeng HU Chunsheng |
| Institution: | YANG Liu;CHEN Xingwei;XU Youpeng;HU Chunsheng;Geographic and Oceanographic Sciences,Nanjing University;School of Geographic Sciences,Fujian Normal University; |
| Abstract: | Objective] Studying the hydrological responses to land use and cover change of Southeast China coast in a small watershed, in order to provide references for the rational allocation and sustainable development of water and soil resources.Methods] The confluence catchment of Jinjiang Shanmei Reservoir in Fujian Province of China, a place located at the southeast coast of China, was selected to illustrate the effects of land use and cover change(LUCC) on hydrological processes by SWAT model.Results] (1) From 1995 to 2006, the forest land was mainly converted to garden land and construction land, while farm land was mainly transformed to construction land; (2) In the model, if other conditions were fixed, only data of land use in 2006 was replaced with the corresponding input variable in 1995, the runoff could be outputted as contrast:from 2000 to 2010, the annual runoffs in the whole watershed and also in the tributary drainage area consequently increased; and the averaged runoff during flooding increased, while the runoff during rainless period decreased; (3) The runoff volume in the whole watershed increased with an increased variation as contrast with the previous corresponding value; (4) Garden land, forest land, construction land and paddy field were the main driving factors that caused the regional hydrological changes.Conclusion] Land use and cover change in the study area were found to result in a runoff trend that are "the flood volume is larger, the runoff yield is smaller". The changes of river runoff was resulted from the combined effects of all types of land use change. This combination effects need to be further studied. |
| Keywords: | SWAT model daily runoff process simulation land use and cover change hydrological responses Southeast China coastal area small watershed |
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