干旱区生态环境知识资源中心(Arid): Influence of vegetation parameters on runoff and sediment characteristics in patterned Artemisia capillaris plots

Arid

	Influence of vegetation parameters on runoff and sediment characteristics in patterned Artemisia capillaris plots
	Zhang Guanhua; Liu Guobin; Zhang Pingcang; Yi Liang
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2014
卷号	6 期号:3 页码:352-360
英文摘要	Vegetation patterns are important in the regulation of earth surface hydrological processes in arid and semi-arid areas. Laboratory-simulated rainfall experiments were used at the State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Yangling, northwestern China, to quantify the effects of Artemisia capillaris patterns on runoff and soil loss. The quantitative relationships between runoff/sediment yield and vegetation parameters were also thoroughly analyzed using the path analysis method for identifying the reduction mechanism of vegetation on soil erosion. A simulated rainfall intensity of 90 mm/h was applied on a control plot without vegetation (C_0) and on the other three different vegetation distribution patterns: a checkerboard pattern (CP), a banded pattern perpendicular to the slope direction (BP), and a single long strip parallel to the slope direction (LP). Each patterned plot received two sets of experiments, i.e. intact plants and roots only, respectively. All treatments had three replicates. The results showed that all the three other different patterns (CP, BP and LP) of A. capillaris could effectively reduce the runoff and sediment yield. Compared with C_0, the other three intact plant plots had a 12%-25% less runoff and 58%-92% less sediment. Roots contributed more to sediment reduction (46%-70%), whereas shoots contributed more to runoff reduction (57%-81%). BP and CP exhibited preferable controlling effects on soil erosion compared with LP. Path analysis indicated that root length density and plant number were key parameters influencing runoff rate, while root surface area density and root weight density were central indicators affecting sediment rate. The results indicated that an appropriate increase of sowing density has practical significance in conserving soil and water.
英文关键词	arid and semi-arid areas Artemisia capillaris patches runoff and sediment roots and shoots vegetation parameters
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	History
CSCD记录号	CSCD:5116161
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335347
作者单位	Zhang Guanhua, Department of Soil and Water Conservation, Changjiang River Scientific Research Institute, State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Wuhan, Hubei 430010, China.; Liu Guobin, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Yangling, Shanxi 712100, China.; Zhang Pingcang, Department of Soil and Water Conservation, Changjiang River Scientific Research Institute, Wuhan, Hubei 430010, China.; Yi Liang, Hubei Academy of Environmental Sciences, Wuhan, Hubei 430072, China.
推荐引用方式 GB/T 7714	Zhang Guanhua,Liu Guobin,Zhang Pingcang,et al. Influence of vegetation parameters on runoff and sediment characteristics in patterned Artemisia capillaris plots[J],2014,6(3):352-360.
APA	Zhang Guanhua,Liu Guobin,Zhang Pingcang,&Yi Liang.(2014).Influence of vegetation parameters on runoff and sediment characteristics in patterned Artemisia capillaris plots.Journal of Arid Land,6(3),352-360.
MLA	Zhang Guanhua,et al."Influence of vegetation parameters on runoff and sediment characteristics in patterned Artemisia capillaris plots".Journal of Arid Land 6.3(2014):352-360.