| 基于简单水平衡模型的流域LUCC水文效应模拟研究 |
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| 引用本文： | 钱健,赵智杰.基于简单水平衡模型的流域LUCC水文效应模拟研究[J].水土保持研究,2009,16(3):11-15. |
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| 作者姓名： | 钱健 赵智杰 |
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| 作者单位： | 北京大学 环境科学与工程学院, 北京 100871 |
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| 摘 要： | 以快速城市化的深圳宝安为研究区，用近20 a的TM卫星影像解译出该区土地利用变化，以1995年的降雨蒸发数据为基准，在修正的简单水平衡模型中模拟研究了流域土地利用变化的水文效应。结果表明，城市化造成的土地利用变化使得宝安区的总径流量呈上升趋势，土壤和地下水蓄水量逐年减少，年内分配不均匀程度则呈增大趋势。1990-2007年，区域年总径流量增加了8.05%，月均土壤和地下水蓄水量均减少了约30%，径流年内分配不均匀系数增大2.33%。这些在一定程度上反映了流域调蓄能力和水土保持功能的下降。另一方面，因土地利用变化的区域差异，不同流域的水文效应不同。研究结果对流域尺度的水资源评价和管理有参考意义。
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| 关 键 词： | 简单水平衡模型 流域 LUCC 水文效应 模拟 |
Simulation Research of Hydrological Response on Watershed Land Use and Land Cover Change Based on a Simple Water Balance Model |
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| QIAN Jian,ZHAO Zhi-jie.Simulation Research of Hydrological Response on Watershed Land Use and Land Cover Change Based on a Simple Water Balance Model[J].Research of Soil and Water Conservation,2009,16(3):11-15. |
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| Authors: | QIAN Jian ZHAO Zhi-jie |
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| Institution: | College of Environmental Science and Engineering, Peking University, Beijing 100871, China |
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| Abstract: | This paper takes Bao’an District of Shenzhen as a study area since its rapid urbanization. Regional landuse changes in nearly 20 years are analyzed by interpreting TM images. A modified simple water balance model is applied to research hydrological response on watershed landuse changes, using rainfall and evaporation data of 1995. The results show that, landuse changes which caused by urbanization result in a yearly increasing trend of the total runoff volume, while soil and groundwater storage capacity is decreasing. Moreover, the degree of inner-annual distribution unevenness shows an increasing trend. From 1990 to 2007, the regional total annual runoff increased by 8.05%, the monthly average soil water and groundwater storage capacity both decreased by about 30%, inner-annual distribution unevenness coefficient of runoff increased by 2.33%. To some extent, these phenomena reflect the decline in watershed regulation and storage capacity, as well as soil and water conservation function. On the other hand, different hydrological responses of different basins are due to the regional differences of landuse changes. The research has reference value in water resource assessment and management in the watershed scale. |
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| Keywords: | LUCC |
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