Physical and chemical soil properties in debris-flowbottomland plots

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部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）

	Physical and chemical soil properties in debris-flowbottomland plots
	QY Zhang 1,2; FD Li 3; CP Chang 4; HL Pan1 ; GQ Ou1
	2007
会议名称	4th International Conference on Debris-Flow Hazards Mitigation - Mechanics, Prediction, and Assessment
会议日期	2007-9-10~13
会议地点	成都
关键词	land use soil properties debris flow bottomland soil nutrient crop bottomland forest bottomland
页码	735-742
通讯作者	GQ Ou
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 ANin 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.
收录类别	ISTP
会议主办者	The Fourth International Conference on Debeis-Flow Hazards Mitigation
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	PO BOX 84118, 3009 CC ROTTERDAM, NETHERLANDS
学科主题	灾害学
语种	英语
ISBN号	978-90-5966-059-5
WOS记录号	WOS:000267333300071
内容类型	会议论文
源URL	[http://192.168.143.20:8080/handle/131551/3711]
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
作者单位	1.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences & Ministry of Water 2.Graduate School of Science and Technology, Chiba University, Chiba, Japan 3.College of Resource and Environment Science, Hebei Normal University, Shijiazhuang, China 4.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences & Ministry of Water
推荐引用方式 GB/T 7714	QY Zhang,FD Li,CP Chang,et al. Physical and chemical soil properties in debris-flowbottomland plots[C]. 见:4th International Conference on Debris-Flow Hazards Mitigation - Mechanics, Prediction, and Assessment. 成都. 2007-9-10~13.