Effects of terracing on root distribution of Pinus tabulaeformis Carr. forest and soil properties in the Loess Plateau of China
文献类型：期刊论文
| 作者 | Qi, Yulin; Wei, Wei ; Li, Junran; Chen, Cungen; Huang, Yuanyuan
|
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2020-06-15 |
| 卷号 | 721页码:1-14 |
| 关键词 | Root density Fine root Soil properties Terracing Loess Plateau |
| ISSN号 | 0048-9697 |
| 英文摘要 | Terracing is one of the most effective ecological engineering practices that improve soil anti-erosivity properties and support plant growth in the dryland loess hilly area and other similar regions. The objective of the study was to understand the vertical distribution of root in different terraces and their relationships with soil environmental factors in the Loess Plateau of China. The vertical root distribution in the 0-400 cm soil profile, fine root distribution and soil moisture, soil nutrients (soil organic carbon, total nitrogen, and total phosphorus) and soil anti-erosivity in 0-160 cmsoil profiles (every 20 cm for one layer) were investigated using the ground-penetrating radar and soil coring methods in a Pinus tabulaeformis Carr. forest under three terrace types during the growing season of 2018. We highlight several key findings here. First, level benches had the highest root density (18.14 kg m(-2)), followed by fish-scale pits (13.95 kg m(-2)) and reverse-slope terraces (9.84 kg m(-2)), as well as the highest soilwater content, nutrients and soil stability. Second, terracing caused significant differences in root distribution (P < 0.05), leading to the variation of soilmoisture, nutrients, anti-erosivity (explained over 80% variation) and reduced spatial heterogeneities of soil water content and nutrients. Third, fine root density parameters attained the highest values in the topsoil (0-40 cm soil layer) and decreased with increasing soil depth in all the three terrace types (P < 0.05). Finally, fine roots contributed to soilwater improvement, nutrient promotion and soil stabilization, while higher density of coarse rootsmight consume soil nutrients and reduce soil anti-erosivity. We thus suggest that level benches could be a more suitable terracing measure for plantation of P. tabulaeformis Carr., and to achieve soil melioration and fixation during the ecosystem restoration process in the Loess Plateau and other arid and semiarid regions. (C) 2020 Elsevier B.V. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/44297]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Qi, Yulin,Wei, Wei,Li, Junran,et al. Effects of terracing on root distribution of Pinus tabulaeformis Carr. forest and soil properties in the Loess Plateau of China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,721:1-14. |
| APA | Qi, Yulin,Wei, Wei,Li, Junran,Chen, Cungen,&Huang, Yuanyuan.(2020).Effects of terracing on root distribution of Pinus tabulaeformis Carr. forest and soil properties in the Loess Plateau of China.SCIENCE OF THE TOTAL ENVIRONMENT,721,1-14. |
| MLA | Qi, Yulin,et al."Effects of terracing on root distribution of Pinus tabulaeformis Carr. forest and soil properties in the Loess Plateau of China".SCIENCE OF THE TOTAL ENVIRONMENT 721(2020):1-14. |
入库方式： OAI收割
来源：生态环境研究中心
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