Soil desiccation for Loess soils on natural and regrown areas
文献类型：期刊论文
| 作者 | Li, W (Li, Wang)1,2 ; Wang, QJ (Wang Quanjiu)1 ; Wei, SP (Wei Sanping)2 ; Shao, MA (Shao Ming'an)1,2 ; Yi, L (Yi, Li)2 |
| 刊名 | FOREST ECOLOGY AND MANAGEMENT
 |
| 出版日期 | 2008 |
| 卷号 | 255期号:7页码:2467-2477 |
| 关键词 | soil desiccation dried soil layer (DSL) natural forest regrown forest slope aspect slope gradient soil physical property |
| 通讯作者 | Li, W |
| 英文摘要 | In the Loess Plateau, soil desiccation has become a serious problem for forest and grass vegetation. Soil desiccation leads to the formation of a dried soil layer (DSL). This paper presents the results of research carried out in the central part of the Loess Plateau. The objective of the research was to produce a statistically supported set of indicators for evaluating soil desiccation of forestlands, to present a heuristic idea for soil desiccation and to supply scientific support for replacing farmland with forest or grass in the Loess Plateau and other regions of China. Here, we suggest that more attention should be paid to soil desiccation and its effects on the ecosystem of the region in the future. The results showed that natural Quercus liaotungensis forestlands (NQF) retained more water content than regrown Robinnia pseudoscacia forestlands (RRF). Significant DSLs were formed in the RRF but not in the NQF. A possible reason for no formation of DSL in NQF could be due to the presence of an arbor-shrub-herb stand structure and large humus and litter accumulation, which increased the natural forest's (NF) adaptability to the environmental conditions. Soil water content in the north-facing slope was significantly larger than in the south-facing slope. DSLs formed in the 0-500 cm layer of the south-facing slope. When slope gradient was greater than 25 degrees, soil water content deceased sharply and showed significant difference compared with 9 degrees, 15 degrees and 20 degrees (P < 0.05). So, we conclude that plant species, aspect and slope angle could be the predicators for the formation of DSLs. The analysis on soil physical properties of 0-60 cm layer indicated that plant species, aspect and slope angle also have significant effects on bulk density, porosity, plant-available capacity, and hydraulic conductivity, especially in the 0-20 and 20-40 cm layers. In the NQF and RRF with north-facing slope, soil physical properties were improved. (C) 2008 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2012-06-14 |
| 源URL | [http://ir.iswc.ac.cn/handle/361005/4853]  |
| 专题 | 水土保持研究所_水保所知识产出(1956-2013) |
| 推荐引用方式 GB/T 7714 | Li, W ,Wang, QJ ,Wei, SP ,et al. Soil desiccation for Loess soils on natural and regrown areas[J]. FOREST ECOLOGY AND MANAGEMENT,2008,255(7):2467-2477. |
| APA | Li, W ,Wang, QJ ,Wei, SP ,Shao, MA ,&Yi, L .(2008).Soil desiccation for Loess soils on natural and regrown areas.FOREST ECOLOGY AND MANAGEMENT,255(7),2467-2477. |
| MLA | Li, W ,et al."Soil desiccation for Loess soils on natural and regrown areas".FOREST ECOLOGY AND MANAGEMENT 255.7(2008):2467-2477. |
入库方式： OAI收割
来源：水土保持研究所
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