中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Effects of desertification on soil organic C and N content in sandy farmland and grassland of Inner Mongolia

文献类型:期刊论文

作者Zhao, Ha-Lin1; He, Yu-Hui1; Zho, Rui-Lian2; Su, Yong-Zhong1; Li, Yu-Qiang1; Drake, Sam3
刊名CATENA
出版日期2009-06-15
卷号77期号:3页码:187-191
关键词Desertification Wind erosion Organic C Total N Farmland Grassland
ISSN号0341-8162
DOI10.1016/j.catena.2008.12.007
通讯作者Zhao, Ha-Lin(zhaohalin666@hotmail.com)
英文摘要Desertification is one of the most serious types of land degradation. A field experiment was conducted during 2002 and 2003 in Horqin Sand Land, China to investigate changes in soil C and N contents in relation to land desertification. Four primary results were derived from this work. First, land desertification characterized by wind erosion resulted in a significant decrease in soil fine particles (clay + silt) with a corresponding increase in sand content. In comparison to non-desertified land, soil fine particle content decreased by up to 89.2%, and sand content increased by up to 47.2%, in the severely desertified land. Second, the organic C and total N in soil were mainly associated with the soil fine particles, and decreased significantly with desertification development. Organic C decreased by 29.2% and total N by 31.5% in the severely desertified land compared to the non-desertified land. Third. the decrease in organic C and N content was greater in desertified grassland than in desertified farmland. Fourth, the changes in organic C and total N content had a significant positive correlation with the soil fine particle content (P<0.01) and a significant negative correlation with coarse sand content (P<0.01), indicating that land desertification by wind erosion is mediated through a loss of soil fine particles. with a resultant decrease in soil organic C and total N. (C) 2008 Elsevier B.V. All rights reserved.
收录类别SCI
WOS关键词WIND EROSION ; CARBON ; PRODUCTIVITY ; STORAGE ; IMPACT ; LAND
WOS研究方向Geology ; Agriculture ; Water Resources
WOS类目Geosciences, Multidisciplinary ; Soil Science ; Water Resources
语种英语
WOS记录号WOS:000265238300004
出版者ELSEVIER SCIENCE BV
URI标识http://www.irgrid.ac.cn/handle/1471x/2556176
专题寒区旱区环境与工程研究所
通讯作者Zhao, Ha-Lin
作者单位1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Inst, Lanzhou 730000, Peoples R China
2.Ludong Univ, Sch Life Sci, Yantai 264025, Peoples R China
3.Univ Arizona, Off Arid Lands Studies, Tucson, AZ 85719 USA
推荐引用方式
GB/T 7714
Zhao, Ha-Lin,He, Yu-Hui,Zho, Rui-Lian,et al. Effects of desertification on soil organic C and N content in sandy farmland and grassland of Inner Mongolia[J]. CATENA,2009,77(3):187-191.
APA Zhao, Ha-Lin,He, Yu-Hui,Zho, Rui-Lian,Su, Yong-Zhong,Li, Yu-Qiang,&Drake, Sam.(2009).Effects of desertification on soil organic C and N content in sandy farmland and grassland of Inner Mongolia.CATENA,77(3),187-191.
MLA Zhao, Ha-Lin,et al."Effects of desertification on soil organic C and N content in sandy farmland and grassland of Inner Mongolia".CATENA 77.3(2009):187-191.

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来源:寒区旱区环境与工程研究所

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