Effects of erosion patterns on nutrient loss following deforestation on the Loess Plateau of China

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）

	Effects of erosion patterns on nutrient loss following deforestation on the Loess Plateau of China
	Zheng, FL 1; He, XB2 ; Gao, XT 1; Zhang, C 3; Tang, KL 1
刊名	AGRICULTURE ECOSYSTEMS & ENVIRONMENT
	2005-06-05
卷号	108 期号:1 页码:85-97
关键词	erosion patterns nutrient loss nutrient enrichment deforestation rainfall the Loess Plateau of China
ISSN号	0167-8809
通讯作者	He, XB
英文摘要	Soil degradation caused by deforestation is one of main environmental problems all over the world. The objective of this paper was to quantitatively evaluate the effects of erosion patterns on organic matter, nitrogen and phosphorus (P) losses, by monitoring soil erosion and nutrient loss in newly deforested lands in the Ziwuling region on the Loess Plateau of China from 1986 to 1996. Eight field runoff plots, with various sizes to enable documentation different combinations of dominant erosion processes, were established on a hillslope. Results showed that the nutrient loss was dramatically affected by erosion patterns and erosion intensity. Seven years after deforestation, organic matter, total nitrogen, ammonium nitrogen and available P reduced by 69, 46.7, 65.6 and 86.6%, respectively. The most severe soil erosion and nutrient loss occurred in the ephemeral gully channels. Organic matter, total nitrogen, ammonium nitrogen and available P had different nutrient enrichment ratios in eroded sediment. The available P had the highest enrichment ratios, followed by ammonium nitrogen. The nutrient enrichment ratios were closely related to sediment concentration and erosion patterns. In sheet erosion zone, the nutrient enrichment ratios in eroded sediment decreased with an increase of sediment concentration; in the combined erosion zones of sheet, rill and shallow gully, the nutrient enrichment ratios in sediment initially decreased and then increased with an increase of sediment concentration. The nutrient enrichment in eroded sediment also greatly affects by rainfall characteristics such as rainfall amount and intensity. (c) 2005 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences
研究领域[WOS]	Agriculture ; Environmental Sciences & Ecology
关键词[WOS]	SOIL-EROSION ; RUNOFF ; NITROGEN ; PHOSPHORUS ; SEDIMENT
收录类别	SCI
语种	英语
WOS记录号	WOS:000229343500007
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/10501]
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_山地表生过程与生态调控重点实验室
作者单位	1.CAS, Minist Water Conservance, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China 2.CAS, Inst Soil & Water Conservat, Natl Lab Soil Eros & Dryland Farming Loess Platea, Yangling 712100, Shaanxi, Peoples R China 3.Northwestern Sci Tech Univ Agr & Forestry, MRS, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Zheng, FL,He, XB,Gao, XT,et al. Effects of erosion patterns on nutrient loss following deforestation on the Loess Plateau of China[J]. AGRICULTURE ECOSYSTEMS & ENVIRONMENT,2005,108(1):85-97.
APA	Zheng, FL,He, XB,Gao, XT,Zhang, C,&Tang, KL.(2005).Effects of erosion patterns on nutrient loss following deforestation on the Loess Plateau of China.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,108(1),85-97.
MLA	Zheng, FL,et al."Effects of erosion patterns on nutrient loss following deforestation on the Loess Plateau of China".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 108.1(2005):85-97.