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题名: Grazing intensity and soil depth effects on soil properties in alpine meadow pastures of Qilian Mountain in northwest China
作者: Yuan, H; Hou, FJ(侯扶江)
收录类别: SCIE ; BIOSIS
出版日期: 2015-04-03
刊名: ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE
卷号: 65, 期号:3, 页码:222-232
出版者: TAYLOR & FRANCIS
出版地: OSLO
英文摘要: In the mountainous rangeland of inland arid regions of Eurasia, seasonal grazing has been important to local communities for production of food, fiber, and for income, for the past thousand years. Recent population increases and other changes have put traditional grazing systems under pressure. However, empirical data describing soil properties or the impact of traditional grazing practice on the thresholds at which increase in animal stocking rate (SR) may result in degradation are lacking. Here, we provide, for alpine "typical steppe" at Qilian Mountain on the Tibetan plateau in China, a description of variation in some soil properties with soil depth, and with variation in grazing intensity. The soils studied have a humus-rich epipedon typically exceeding our sampling depth of 40 cm. As commonly reported, increased grazing intensity has correlated with depletion in soil organic carbon (SOC). Regression of our SOC data on SR indicated no "safe" threshold for grazing intensity below which SOC depletion would not occur. Other soil changes linked to increased grazing intensity in our study included a lowering of the carbon:nitrogen ratio (indicating possibly increased risk of nitrogen loss from farming systems to the wider environment), an increase in soil bulk density, a decrease in soil moisture content, and transfer of phosphorus from less intensively grazed areas toward animal night pens. Our study site is experiencing a climate warming trend which may be contributing to loss of SOC.
关键词: grazing ; soil salt ; soil organic carbon ; soil nitrogen ; soil water content ; soil phosphorus ; alpine typical steppe
作者部门: [Yuan, Hang] Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730020, Gansu, Peoples R China ; [Hou, Fujiang] Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland Agroecosyst, Lanzhou 730020, Gansu, Peoples R China
通讯作者: Hou, FJ (reprint author), Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland Agroecosyst, Lanzhou 730020, Gansu, Peoples R China.
学科分类: Agriculture
文章类型: Article
所属项目编号: National Basic Research Program of China [2014CB138706] ; Program for Changjiang Scholars and Innovative Research Team in University [IRT13019] ; National Natural Science Foundation of China [31172249]
所属项目名称: 国家自然科学基金项目 ; 国家重点基础研究发展计划以及国家重大科学研究计划(973计划) ; 长江学者和创新团队发展计划
项目资助者: NSFC ; MOST ; MOE
语种: 英语
DOI: 10.1080/09064710.2014.992940
ISSN号: 0906-4710
WOS记录号: WOS:000350385700003
BIOSIS记录号: BCI:BCI201500274489
IR记录号: BCI:BCI201500274489
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/120562
Appears in Collections:资源环境学院_期刊论文

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Recommended Citation:
Yuan, H,Hou, FJ. Grazing intensity and soil depth effects on soil properties in alpine meadow pastures of Qilian Mountain in northwest China[J]. ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE,2015,65(3):222-232.
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文件名: Grazing intensity and soil depth effects on soil properties in alpine meadow pastures of Qilian Mountain in northwest China.pdf
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