| 高寒草甸牧草产量和草场载畜量模拟研究及对气候变暖的响应 |
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| 引用本文： | 李英年.高寒草甸牧草产量和草场载畜量模拟研究及对气候变暖的响应[J].草业学报,2000,9(2):77-82. |
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| 作者姓名： | 李英年 |
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| 作者单位： | 中国科学院西北高原生物研究所,青海西宁 810001 |
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| 基金项目： | 国家与中科院“九五”特别支持! (KZ95 T- 0 4- 0 3，KZ95 - A1 - 2 0 4- 0 4)研究项目资助 |
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| 摘 要： | 高寒草甸地区温度是限制牧草地上年产量提高的主要因素，利用这一点，引进牧草产量与生长期间的产量积温比概念，建立高寒草甸牧草产量的估算模式。
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| 关 键 词： | 高寒草甸 牧草产量 载畜量 气候变暖 |
| 文章编号： | 1004-5759(2000)02-0077-06 |
| 修稿时间： | 1999年5月27日 |
Simulation of forage yield and stocking rate on alpine grassland in response to warming trend of climate |
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| LI Ying,nian.Simulation of forage yield and stocking rate on alpine grassland in response to warming trend of climate[J].Acta Prataculturae Sinica,2000,9(2):77-82. |
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| Authors: | LI Ying nian |
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| Abstract: | Temperature is a major factor limiting the growth of above ground biomass on alpine grasslands.Based on this consideration, a simulation model, with the ratio between the forage yield and the accumulated temperature during the growing season as an indicator, was developed and tested in this study for forecasting fodder production. The model proved to be more accurate than conventional methods, with an average error of only 2%. The model also indicated that the carrying capacity of the alpine grasslands in northern Qinghai would decline from 2.54 to 1.04 sheep units per hectare in response to the warming trend in climatic changes. |
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| Keywords: | alpine meadow forage yield stocking rate warming in climate |
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