NWIPB OpenIR
Optimization yak grazing stocking rate in an alpine grassland of Qinghai-Tibetan Plateau, China
Dong, Quan-Ming ; Zhao, Xin-Quan ; Wu, Gao-Lin ; Chang, Xiao-Feng ; Zhao, XQ (reprint author), Chinese Acad Sci, Northwest Plateau Inst Biol, Xining 810003, Qinghai, Peoples R China.
2015-03-01
发表期刊ENVIRONMENTAL EARTH SCIENCES
摘要A simple yak (Bos grunniens) production model developed in this study was to evaluate the health of the intensive livestock production system in the three rivers headwaters region, on the Qinghai-Tibetan Plateau. An experiment conducted for 3 years showed that individual yak liveweight gain (kg/head) was negatively related to stocking rate (Sr) (head/ha). Yak liveweight gain per hectare (kg/ha) was modeled as a quadratic function of Sr, with an apparent optimum yak stocking rate (Sr-op). Following the model, the Sr-op rate was 1.67 heads/ha for the warm-season pasture (WSP), 0.72 head/ha for the cool-season pasture (CSP), and 0.63 head/ha for the yearlong periods grazing pastures, respectively. The corresponding maximum carrying capacity (when individual yak live weight gain was equal to zero) was 3.34, 1.44, and 1.26 head/ha for warm-season, cool-season, and yearlong periods grazing pasture, respectively. In comparison with modeled maximum stock carrying capacity, all the cold-season pasture in the three rivers headwaters region were overgrazed. By contrast, only 37.5 % of the warm-season rangeland area overgrazed. It indicated that reconstruction of the proportion of the seasonal rangeland area may be an effective strategy to prevent serious rangeland degradation in this alpine region. Moreover, adjustment of the stoking rate at optimum values may likely improve the income for local herders.; A simple yak (Bos grunniens) production model developed in this study was to evaluate the health of the intensive livestock production system in the three rivers headwaters region, on the Qinghai-Tibetan Plateau. An experiment conducted for 3 years showed that individual yak liveweight gain (kg/head) was negatively related to stocking rate (Sr) (head/ha). Yak liveweight gain per hectare (kg/ha) was modeled as a quadratic function of Sr, with an apparent optimum yak stocking rate (Sr-op). Following the model, the Sr-op rate was 1.67 heads/ha for the warm-season pasture (WSP), 0.72 head/ha for the cool-season pasture (CSP), and 0.63 head/ha for the yearlong periods grazing pastures, respectively. The corresponding maximum carrying capacity (when individual yak live weight gain was equal to zero) was 3.34, 1.44, and 1.26 head/ha for warm-season, cool-season, and yearlong periods grazing pasture, respectively. In comparison with modeled maximum stock carrying capacity, all the cold-season pasture in the three rivers headwaters region were overgrazed. By contrast, only 37.5 % of the warm-season rangeland area overgrazed. It indicated that reconstruction of the proportion of the seasonal rangeland area may be an effective strategy to prevent serious rangeland degradation in this alpine region. Moreover, adjustment of the stoking rate at optimum values may likely improve the income for local herders.
文献类型期刊论文
条目标识符http://210.75.249.4/handle/363003/22330
专题中国科学院西北高原生物研究所
推荐引用方式
GB/T 7714
Dong, Quan-Ming,Zhao, Xin-Quan,Wu, Gao-Lin,et al. Optimization yak grazing stocking rate in an alpine grassland of Qinghai-Tibetan Plateau, China[J]. ENVIRONMENTAL EARTH SCIENCES,2015.
APA Dong, Quan-Ming,Zhao, Xin-Quan,Wu, Gao-Lin,Chang, Xiao-Feng,&Zhao, XQ .(2015).Optimization yak grazing stocking rate in an alpine grassland of Qinghai-Tibetan Plateau, China.ENVIRONMENTAL EARTH SCIENCES.
MLA Dong, Quan-Ming,et al."Optimization yak grazing stocking rate in an alpine grassland of Qinghai-Tibetan Plateau, China".ENVIRONMENTAL EARTH SCIENCES (2015).
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