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Effects of aeolian processes on soil nutrient loss in the Gonghe Basin, Qinghai-Tibet Plateau: an experimental study

文献类型：期刊论文

作者Wang, Xunming1,2; Lang, Lili1; Hua, Ting3; Li, Hui3; Zhang, Caixia3; Ma, Wenyong1
刊名JOURNAL OF SOILS AND SEDIMENTS
出版日期2018
卷号18期号:1页码:229-238
关键词Desertification Human activity Qinghai-Tibet Plateau Soil nutrient loss Wind erosion Wind tunnel simulation
ISSN号1439-0108
DOI10.1007/s11368-017-1734-0
通讯作者Wang, Xunming(xunming@igsnrr.ac.cn)
英文摘要The Gonghe Basin of northeastern Qinghai-Tibet Plateau is threatened by aeolian processes, soil nutrient loss, and desertification, where human activities have greatly increased over recent decades. However, the interactions between aeolian processes and soil nutrient loss remain poorly understood. Therefore, in this study, we employed a wind tunnel to simulate aeolian processes and soil nutrient loss affected by human activities such as tillage and trampling by livestock. Field investigations, wind tunnel experiments, and experimental analyses were conducted to assess the impacts of human activity (wholesale destruction of vegetation) and aeolian processes on soil nutrient loss and desertification in the Gonghe Basin. After grassland soil surface was disaggregated, sediments removed by high aeolian intensity (ae16 m s(-1)) ranged from 294.02 to 1012.73 g m(-2), and wind erosion depths varied from 4.09 to 11.27 mm. High wind velocities resulted in losses of total soil organic matter (SOM) and total nitrogen (TN) by 7.56 and 0.38 kg ha(-1), respectively. Under very high wind velocities (ae22 m s(-1)), losses of SOM and TN were 26.99 and 1.41 kg ha(-1), respectively. Wind tunnel experiments indicate that in the Gonghe Basin, there were no significant correlations between wind velocity and the removal of SOM and TN; however, positive correlations were observed between wind velocity and total phosphorus (TP) and total potassium (TK). Aeolian processes remove TK and TP from the soil surface, which has a potential impact on vegetation because that K and P are essential nutrients for plant growth. In addition, most nutrients are enriched within fine particle fraction of soil. Nutrient loss caused by aeolian processes may therefore result in the degradation of farmland and grassland, which consequently may have triggered desertification in the Gonghe Basin.
WOS关键词WIND EROSION ; SANDY DESERTIFICATION ; CHINA ; DUST ; ECOSYSTEMS ; GRASSLAND ; DESERT ; REGION ; DEGRADATION ; PROVINCE
资助项目National Key Research and Development Program of China[2016YFA0601900] ; National Science Fund for Distinguished Young Scholars of China[41225001] ; National Key Project for Basic Research, Responses of Aeolian Desertification to Global Change in the Qinghai-Tibet Plateau[2013CB956003]
WOS研究方向Environmental Sciences & Ecology ; Agriculture
语种英语
WOS记录号WOS:000419164400022
出版者SPRINGER HEIDELBERG
资助机构National Key Research and Development Program of China ; National Science Fund for Distinguished Young Scholars of China ; National Key Project for Basic Research, Responses of Aeolian Desertification to Global Change in the Qinghai-Tibet Plateau
源URL[http://ir.igsnrr.ac.cn/handle/311030/60841]  
专题中国科学院地理科学与资源研究所
通讯作者Wang, Xunming
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Desert & Desertificat, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Xunming,Lang, Lili,Hua, Ting,et al. Effects of aeolian processes on soil nutrient loss in the Gonghe Basin, Qinghai-Tibet Plateau: an experimental study[J]. JOURNAL OF SOILS AND SEDIMENTS,2018,18(1):229-238.
APA Wang, Xunming,Lang, Lili,Hua, Ting,Li, Hui,Zhang, Caixia,&Ma, Wenyong.(2018).Effects of aeolian processes on soil nutrient loss in the Gonghe Basin, Qinghai-Tibet Plateau: an experimental study.JOURNAL OF SOILS AND SEDIMENTS,18(1),229-238.
MLA Wang, Xunming,et al."Effects of aeolian processes on soil nutrient loss in the Gonghe Basin, Qinghai-Tibet Plateau: an experimental study".JOURNAL OF SOILS AND SEDIMENTS 18.1(2018):229-238.

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来源：地理科学与资源研究所

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