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| 长江三峡花岗岩区典型林地暴雨径流特征研究 | |
| 引用本文： | 潘磊,唐万鹏,黄志霖,史玉虎,马德举,崔鸿侠.长江三峡花岗岩区典型林地暴雨径流特征研究[J].湖北林业科技,2010(1):1-4. |
| 作者姓名： | 潘磊 唐万鹏 黄志霖 史玉虎 马德举 崔鸿侠 |
| 作者单位： | 1. 湖北省林业科学研究院,武汉,430075 2. 中国林业科学研究院,北京,100091 3. 湖北省宜昌市秭归县林业局,宜昌,412000 |
| 基金项目： | 国家“十一五”科技支撑项目“三峡库区景观生态防护林体系构建技术试验示范(2006BAD03A13)”;;国家林业局“长江三峡库区(秭归)森林生态定位站”项目;;湖北省林业局森林生态监测项目 |
| 摘 要： | 暴雨是三峡库区常见的气候现象,是区域水土流失和自然灾害的重要诱因。基于连续4年的观测,分析了流域内暴雨的季节分布及其变异特点;并选定3种典型林分,通过设立坡面径流场,对林地暴雨地表径流的特征进行了定量研究。结果表明:①流域内年均暴雨雨量占降雨的21.4%,且年际及月际间分配极不均匀,主要集中在7～9月发生,不同月份间暴雨量平均相对变差为1.26;②流域内各林地暴雨径流与总径流大量发生期相同,枫香林、马尾松栎类混交林及马尾松林年暴雨地表径流深分别为4.78,3.75,7.43mm,3类林分5～10月暴雨径流分别占同期地表径流总量的43.2%、51.2%和71.9%;③各类林分地表径流量与暴雨雨量均呈显著线性相关,而与雨强的相关性不显著,说明暴雨条件下蓄满产流是林地产流的主要方式。 |
| 关 键 词： | 长江三峡 花岗岩 暴雨 地表径流 |
Study on Surface Runoff of Typical Vegetations in Granite Region of Three Gorges of Yangtze River in Rainstorm |
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| Pan Lei Tang Wanpeng Huang Zhilin Shi Yuhu Ma Deju Cui Hongxia.Study on Surface Runoff of Typical Vegetations in Granite Region of Three Gorges of Yangtze River in Rainstorm[J].Hubei Forestry Science and Technology,2010(1):1-4. | |
| Authors: | Pan Lei Tang Wanpeng Huang Zhilin Shi Yuhu Ma Deju Cui Hongxia |
| Institution: | 1;1;2;1;3;1;1.Hubei Academy of Forestry Wuhan 430075;2.The Chinese Academy of Forestry Beijing 100091;3.Zigui County Forestry Bureau in Yichang City of Hubei Province Yichang 412000 |
| Abstract: | The rainstorm is a common climatic phenomenon in Three Gorges Reservoir Area, which is an important predisposition to soil erosion and natural disaster, Based on 4-year continuous observations, the season distribution characteristics of rainstorm in the watershed was analysed, and the characteristics of surface runoff of three typical stand in rainstorm was researched, the results are listed as follows： （1）The precipitation of rainstorm accounts for 21.4% of yearly gross, and its distribution is uneven. The rainstorm is mainly emerged between July and September, the degree of its variation is 1.26, which is bigger than gross rainfall; （2）It is between May and October that the runoff of rainstorm occurs easily, which is similar with the gross runoff. The surface runoff depth of liquidambar formosana Hance, mixed stands and Pinus massoniana Lamb. is 4.78 mm,3.75 mm and 7.43 mm respectively, which accounts for 43.2%,51.2% and 71.9% of total runoff in the same period;（3）The liner correlation between surface runoff and precipitation of rainstorm is highly significant. However,there are no clear correlations between surface runoff and intensity of rainstorm, which indicate the main model of runoff yield is excess storage in rainstorm. |
| Keywords: | Three Gorges of Yangtze River granite rainstorm surface runoff |
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