NWIPB OpenIR
Variation of botanical composition, forage production and nutrient values along a grassland degradation gradient in the alpine region of Qinghai-Tibet Plateau
Wen, L.1; Dong, S. K.1; Li, Y. Y.1; Pulver, C.2; Li, X. Y.1; Shi, J. J.3; Wang, Y. L.3; Ma, Y. S.3; Liu, D. M.4; Dong, SK (reprint author), Beijing Normal Univ, Sch Environm, 19 Xinjiekouwai St, Beijing 100875, Peoples R China.
2013
发表期刊PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY
ISSN1851-5657
卷号82页码:45-54
文章类型Article
摘要The alpine grassland in the Qinghai-Tibet Plateau is an extensive rangeland ecosystem sustaining a sparse population of traditional nomadic pastoralists in China. However, global climate change and anthropologic disturbances have severely degraded the alpine grasslands, and the consequences of this degradation are largely unknown. Forage is the only food source for livestock in the alpine region, and livestock is the major income source for nomadic herders. Therefore, it is critical to assess the forage quantity and quality along the current grassland degradation gradient. In this study, we examined the botanical composition, biomass of different functional groups, and forage grass nutritive values, and classified forage grasses according to their biological condition: lightly degraded, moderately degraded, heavily degraded and severely degraded grasslands. A sharp reduction in vegetative production and variations in botanical composition, plant coverage and nutritive values were associated with increasing degrees of degradation of the alpine grassland. Changes in botanical composition resulted in lower nutritive values in more than in less degraded alpine forage grasses. Given the productive importance of the alpine grassland, urgent action is extremely essential to protect it from degradation.; The alpine grassland in the Qinghai-Tibet Plateau is an extensive rangeland ecosystem sustaining a sparse population of traditional nomadic pastoralists in China. However, global climate change and anthropologic disturbances have severely degraded the alpine grasslands, and the consequences of this degradation are largely unknown. Forage is the only food source for livestock in the alpine region, and livestock is the major income source for nomadic herders. Therefore, it is critical to assess the forage quantity and quality along the current grassland degradation gradient. In this study, we examined the botanical composition, biomass of different functional groups, and forage grass nutritive values, and classified forage grasses according to their biological condition: lightly degraded, moderately degraded, heavily degraded and severely degraded grasslands. A sharp reduction in vegetative production and variations in botanical composition, plant coverage and nutritive values were associated with increasing degrees of degradation of the alpine grassland. Changes in botanical composition resulted in lower nutritive values in more than in less degraded alpine forage grasses. Given the productive importance of the alpine grassland, urgent action is extremely essential to protect it from degradation.
关键词Aboveground Biomass Alpine Grassland Degradation Gradient Forage Nutrient Qinghai-tibet Plateau Vegetation Composition
WOS标题词Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]NUTRITIVE-VALUE ; PERENNIAL GRASSES ; LAND MANAGEMENT ; LEGUME-GRASS ; QUALITY ; CHINA ; CARBON ; YIELD ; VEGETATION ; RANGELAND
收录类别SCI
语种英语
项目资助者Ministry of Science and Technology, China(2012BAC01B02) ; Ministry of Environmental Protection, China(201209033)
WOS研究方向Plant Sciences
WOS类目Plant Sciences
WOS记录号WOS:000331502800004
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://210.75.249.4/handle/363003/3967
专题中国科学院西北高原生物研究所
通讯作者Dong, SK (reprint author), Beijing Normal Univ, Sch Environm, 19 Xinjiekouwai St, Beijing 100875, Peoples R China.
作者单位1.Beijing Normal Univ, State Key Lab Water Environm Simulat, Sch Environm, Beijing 100875, Peoples R China
2.Cornell Univ, Dept Crop & Soil Sci, Ithaca, NY 14853 USA
3.Qinghai Univ, Qinghai Acad Anim Sci & Vet Med, Xining 810003, Peoples R China
4.Chinese Acad Sci, Northwest Inst Plateau Biol, Xining 810008, Peoples R China
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GB/T 7714
Wen, L.,Dong, S. K.,Li, Y. Y.,et al. Variation of botanical composition, forage production and nutrient values along a grassland degradation gradient in the alpine region of Qinghai-Tibet Plateau[J]. PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY,2013,82:45-54.
APA Wen, L..,Dong, S. K..,Li, Y. Y..,Pulver, C..,Li, X. Y..,...&Dong, SK .(2013).Variation of botanical composition, forage production and nutrient values along a grassland degradation gradient in the alpine region of Qinghai-Tibet Plateau.PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY,82,45-54.
MLA Wen, L.,et al."Variation of botanical composition, forage production and nutrient values along a grassland degradation gradient in the alpine region of Qinghai-Tibet Plateau".PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY 82(2013):45-54.
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