KMS Institute of Mountain Hazards and Environment,CAS
| Physical and chemical soil properties in debris-flow bottomland plots | |
| Language | 英语 |
Zhang, QY1,2; Li, FD3; Chang, CP4; Pan, HL1 ; Ou, GQ1
| |
| 2007 | |
| Source Publication | DEBRIS-FLOW HAZARDS MITIGATION: MECHANICS, PREDICTION, AND ASSESSMENT |
| Author of Source | Chen, CL ; Major, JJ |
| Pages | 735-742 |
| meeting | 4th International Conference on Debris-Flow Hazards Mitigation - Mechanics, Prediction and Assessment |
| Conference Date | SEP 10-13, 2007 |
| Conference Place | Chengdu |
| Country | PEOPLES R CHINA |
| Publication Place | ROTTERDAM |
| Publisher | MILLPRESS SCIENCE PUBLISHERS |
| Contribution Rank | 1 |
| Abstract | 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. |
| Keyword | land use soil properties debris flow bottomland soil nutrient crop bottomland forest bottomland |
| ISBN | 978-90-5966-059-5 |
| Indexed By | EI ; CPCI |
| Accession number | Accession number:20085211816300 |
| WOS ID | WOS:000267333300071 |
| Citation statistics | |
| Document Type | 会议论文 |
| Identifier | http://ir.imde.ac.cn/handle/131551/33469 |
| Collection | 成都山地所知识仓储（2009年以前） 山地灾害与地表过程重点实验室 |
| Corresponding Author | Zhang, QY |
| Affiliation | 1.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences & Ministry of Water Conservancy, Chengdu, China; 2.Chiba University, Chiba, Japan; 3.Graduate School of Science and Technology, Chiba University, Chiba, Japan; 4.College of Resource and Environment Science, Hebei Normal University, Shijiazhuang, China |
| First Author Affilication | 中国科学院水利部成都山地灾害与环境研究所 |
| Corresponding Author Affilication | 中国科学院水利部成都山地灾害与环境研究所 |
| Recommended Citation GB/T 7714 | Zhang, QY,Li, FD,Chang, CP,et al. Physical and chemical soil properties in debris-flow bottomland plots[C]//Chen, CL, Major, JJ. ROTTERDAM:MILLPRESS SCIENCE PUBLISHERS,2007:735-742. |
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| File Name/Size | DocType | Version | Access | License | ||
| 庄建琦 等：Physical and c（84KB） | 会议论文 | 开放获取 | CC BY-NC-SA | View Application Full Text | ||
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