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| 尖山河流域不同植被类型坡面产流产沙量研究 | |
| 引用本文： | 杨芳,王克勤,延红卫.尖山河流域不同植被类型坡面产流产沙量研究[J].林业调查规划,2009,34(1):10-14. |
| 作者姓名： | 杨芳 王克勤 延红卫 |
| 作者单位： | 1. 西南林学院经济管理学院,云南,昆明650224 2. 西南林学院环科系,云南,昆明650224 3. 云南省林业调查规划院营林分院,云南,昆明650224 |
| 基金项目： | 珠江流域水土保持监测网络体系建设项目，云南省环境科学与工程创新人才培养基地项目 |
| 摘 要： | 对云南省玉溪市小尖山流域径流小区进行定位观测试验，对珠江石灰岩溶地区的不同植被类型坡面产流产沙量进行分析，结果表明：①该小流域降雨量年内分配不均，雨季（6—9月）占全年降雨量的83．2％，当降雨量大于5mm或10min雨强大于9mm／h时都会使该流域坡耕地发生产流．②灌草丛和次生林比坡耕地减少产流54．29％和92．06％，比人工林减少产流52．78％和87．13％．4个径流小区的产流大小顺序为：坡耕地〉人工林〉退耕地-灌草丛〉次生林．③土壤侵蚀量随着径流量的增加而增加，灌草丛和天然次生林分别比坡耕地减少土壤侵蚀量95．96％和99．02％，比人工林减少土壤侵蚀量64．60％和91．40％，其大小顺序与产流量一致．坡耕地、人工林、灌草丛的侵蚀量主要是由几次单次侵蚀贡献的，而次生林则是平均贡献．因此次生林防止水土流失的效果最好，在建立人工林时，应该考虑合适的复层结构，乔灌结合才能达到水土保持的最佳效果． |
| 关 键 词： | 植被类型 定位观测 降雨强度 坡面产流产沙量 土壤侵蚀 水土保持 尖山河流域 |
Study on Runoffs and Sediment Yields of Different Vegetation Types of Jianshanhe Watershed in Yuxi |
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| YANG Fang,WANG Ke-qin,YAN Hong-wei.Study on Runoffs and Sediment Yields of Different Vegetation Types of Jianshanhe Watershed in Yuxi[J].Forest Inventory and Planning,2009,34(1):10-14. | |
| Authors: | YANG Fang WANG Ke-qin YAN Hong-wei |
| Institution: | 1.School of Economics and Management;Southwest Forestry College;Kunming Yunnan 650224;China;2.Department of Environmental Science and Technology;3.The Branch of Yunnan Institute of Forest Inventory and Planning;China |
| Abstract: | Through the experiment of located observation on runoff plots in Jianshan River watershed of Yuxi city in Yunnan province, the analysis of the runoff and sediment yield of different vegetation types in karsts region has been done. The results show that： （1） The seasonal distribution of precipitation in small watershed is uneven, and the rainfall in rainy season accounts for 83.2% of the whole year＇s total rainfall. The runoff of slope farmland was occurred only when the precipitation was over 5 mm or 10 min and rainfall intensity was over 9 mm/h. （2） Shrub grassland and natural secondary forest could reduce 54.29% and 92.06% of the runoff more than slope farmland, and 52.78% and 87.13% in comparison with artificial forest respectively. The comparison of runoffs of four plots was like ： slope farmland 〉 artificial forest 〉 returned the grain plots 〉 shrub grassland 〉 secondary forest. （3） Soil erosion was increased with runoff increasing. Thus, secondary forest has optimum effect on water ＆ soil erosion. Multi-layer structure should be taken into consideration when establishing plantations to achieve ideal benefit. |
| Keywords: | vegetation type located observation rainfall strength runoff and sediment soil erosion water and soil conservation Jianshan River watershed |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |