The suitability of using leaf area index to quantify soil loss under vegetation cover
文献类型：期刊论文
| 作者 | Zhang Wentai ; Yu Dongsheng ; Shi Xuezheng ; Wang Hongjie ; Gu Zhujun ; Zhang Xiangyan ; Tan Manzhi |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2011-08 |
| 卷号 | 8期号:4页码:564–570 |
| 关键词 | Leaf area index (LAI) Runoff steady state Sediment concentration Simulated rainfall |
| ISSN号 | 1672-6316 |
| 通讯作者 | Yu, DS |
| 英文摘要 | Soil erosion by water under forest cover is a serious problem in southern China. A comparative study was carried out on the use of leaf area index (LAI) and vegetation fractional coverage (VFC) in quantifying soil loss under vegetation cover. Five types of vegetation with varied LAI and VFC under field conditions were exposed to two rainfall rates (40 mm h(-1) and 54 mm h(-1)) using a portable rainfall simulator. Runoff rate, sediment concentration and soil loss rate were measured at relatively runoff stable state. Significant negative exponential relationship (p < 0.05, R(2) = 0.83) and linear relationship (p < 0.05, R(2) = 0.84) were obtained between LAI and sediment concentration, while no significant relationship existed between VFC and sediment concentration. The mechanism by which vegetation canopy prevents soil loss was by reducing rainfall kinetic energy and sediment concentration. LAI could better quantify such a role than VFC. However, neither LAI nor VFC could explain runoff rate or soil loss rate. Caution must be taken when using LAI to quantify the role of certain vegetation in soil and water conservation. |
| 语种 | 英语 |
| 公开日期 | 2013-08-12 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/5858]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2011_Vol8 No.4 |
| 推荐引用方式 GB/T 7714 | Zhang Wentai,Yu Dongsheng,Shi Xuezheng,et al. The suitability of using leaf area index to quantify soil loss under vegetation cover[J]. JOURNAL OF MOUNTAIN SCIENCE,2011,8(4):564–570. |
| APA | Zhang Wentai.,Yu Dongsheng.,Shi Xuezheng.,Wang Hongjie.,Gu Zhujun.,...&Tan Manzhi.(2011).The suitability of using leaf area index to quantify soil loss under vegetation cover.JOURNAL OF MOUNTAIN SCIENCE,8(4),564–570. |
| MLA | Zhang Wentai,et al."The suitability of using leaf area index to quantify soil loss under vegetation cover".JOURNAL OF MOUNTAIN SCIENCE 8.4(2011):564–570. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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