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Effects of erosion patterns on nutrient loss following deforestation on the Loess Plateau of China
Zheng, FL; He, XB; Gao, XT; Zhang, C; Tang, KL
Corresponding AuthorHe, XB
2005-06-05
Source PublicationAGRICULTURE ECOSYSTEMS & ENVIRONMENT
ISSN0167-8809
Volume108Issue:1Pages:85-97
SubtypeArticle
AbstractSoil 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.
KeywordErosion Patterns Nutrient Loss Nutrient Enrichment Deforestation Rainfall The Loess Plateau Of China
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1016/j.agee.2004.12.009
WOS Subject ExtendedAgriculture ; Environmental Sciences & Ecology
Indexed BySCI
WOS KeywordSOIL-EROSION ; RUNOFF ; NITROGEN ; PHOSPHORUS ; SEDIMENT
Language英语
WOS SubjectAgriculture, Multidisciplinary ; Ecology ; Environmental Sciences
WOS IDWOS:000229343500007
Citation statistics
Cited Times:91[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/10501
Collection成都山地所知识仓储(2009年以前)
山地表生过程与生态调控重点实验室
Affiliation1.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
Recommended Citation
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.
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