Physical and chemical soil properties in debris-flow bottomland plots
文献类型：会议论文
| 作者 | Zhang, QY1,3; Li, FD2; Chang, CP4; Pan, HL3; Ou, GQ3
|
| 出版日期 | 2007 |
| 会议日期 | SEP 10-13, 2007 |
| 会议地点 | Chengdu |
| 关键词 | land use soil properties debris flow bottomland soil nutrient crop bottomland forest bottomland |
| 页码 | 735-742 |
| 国家 | PEOPLES R CHINA |
| 英文摘要 | In the Xiaojiang River Basin of Yunnan Province, conflicts between humans and land become more and more serious, and debris-flow bottomland is one of the main land resources under development. In order to study the effect of different land uses on physical soil properties and soil nutrients, Daqing Gully is an example study. Soil samples were taken at depths of 0-10 cm, 10-20 cm, 20-40 cm, 40-60 cm, and 60-80 cm from three representative land use patterns (crop bottomland, forest bottomland, and natural bottomland). Their physical properties and soil nutrients, including total nitrogen (TN), total phosphorus (TP), available nitrogen (AN), available phosphorus (AP), available potassium (AK), and soil organic matter (SOM) were analyzed. Results showed that development of bottomland promotes soil TP and AP accumulation, pH value changes from alkalescency to neutral and significant organic matter decreases due to cultivation. Furthermore, the contents of TN and AN in crop bottomland are lower than forest bottomland and natural bottomland due to the growth of crops in soil consuming more nutrients. At the same time, the distribution and formation of water-stable aggregates in debris-flow bottomland soils under different land use has been studied. Results show that the content of water-stable aggregates is highly correlated with the content of organic matter; moreover, organic matter cements the soil-aggregate structure. The increased decomposition and decreased input Of organic matter after reclamation to crop bottomland is responsible for decreases in both the water-stability of aggregates and in the amount of water-stable aggregates in debris-flow bottomland soil. The results also showed that the contents of TP, AP and AK in soil were positively correlated with soil-particle composition. |
| 源文献作者 | Chen, CL ; Major, JJ |
| 产权排序 | 1 |
| 会议录 | DEBRIS-FLOW HAZARDS MITIGATION: MECHANICS, PREDICTION, AND ASSESSMENT
 |
| 会议录出版者 | MILLPRESS SCIENCE PUBLISHERS |
| 会议录出版地 | ROTTERDAM |
| 语种 | 英语 |
| ISBN号 | 978-90-5966-059-5 |
| WOS记录号 | WOS:000267333300071 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/33469]  |
| 专题 | 成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前） 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
| 通讯作者 | Zhang, QY |
| 作者单位 | 1.Chiba University, Chiba, Japan; 2.Graduate School of Science and Technology, Chiba University, Chiba, Japan; 3.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences & Ministry of Water Conservancy, Chengdu, China; 4.College of Resource and Environment Science, Hebei Normal University, Shijiazhuang, China |
| 推荐引用方式 GB/T 7714 | Zhang, QY,Li, FD,Chang, CP,et al. Physical and chemical soil properties in debris-flow bottomland plots[C]. 见:. Chengdu. SEP 10-13, 2007. |
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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