Effects of land use on phosphorus loss in the hilly area of the Loess Plateau, China

被引：6
作者：
Qinghua Meng
Bojie Fu
Xiaoping Tang
Hongchang Ren
机构：
[1] State Forestry Administration,Academy of Forest Inventory and Planning
[2] Chinese Academy of Sciences,State Key Lab. of Urban and Regional Ecology, Research Center for Eco
来源：
Environmental Monitoring and Assessment | 2008年 / 139卷
关键词：
Land use; Soil erosion; P loss; Hilly area; Loess Plateau;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The hilly area of Loess Plateau has some of the highest soil erosion rates in the world, and serious soil erosion causes great losses of plant nutrients. As the most common land use in Loess Plateau, slope farmland contributed most of the erosion soils. This study was designed to examine the effects of land use and slope angle of farmland on phosphorus (P) loss in the hilly area of loess plateau. Farmland (FR), barrenland (BR), and four forest treantment (seabuckthorn+ poplar (SP), immature seabuckthorn (IS), mature seabuckthorn (MS), immature Chinese pine (ICP)) were the types of land use; 10, 15, 20, 25, 30 degrees were the slope angles of FR that were compared. The results showed a larger proportion of P loss occurred in erosion soil fraction of FR, ICP, ICP, and the five slope treatments of FR; in SP, IS, and MS, P loss was primarily through runoff. FR produced more P loss than SP, IS, ICP, BR, and MS. 20∼30 degrees may be the slope ranges for P loss of FR; FR in this ranges would loss more P with soil erosion. SP, IS, and MS were reasonable land uses for their less runoff, soil loss, and P loss. Farmlands over 15 degrees should be abandoned or reforested for it would produce more runoff, soil loss, and P loss.
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页码：195 / 204
页数：9
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