| 水热因子对三江源高寒草地牧草产量的影响 |
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| 引用本文： | 张东杰. 水热因子对三江源高寒草地牧草产量的影响[J]. 贵州农业科学, 2011, 39(1) |
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| 作者姓名： | 张东杰 |
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| 作者单位： | 青海畜牧兽医职业技术学院,青海湟源,812100 |
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| 基金项目： | 青海省科技厅科技促进新农村建设计划项目(2009-N-503) |
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| 摘 要： | 为了研究水热因子对三江源高寒草地牧草产量的影响,对青海省三江源区兴海县高寒草地1999—2009年的牧草产量与同期降水和温度的关系进行了研究。结果表明,牧草产量与生育期内6月份的积温在0.05水平上呈显著负相关,相关系数为-0.579 3;与4月份降水量、生育期总降水量以及年降水量在0.05水平上呈显著正相关,相关系数分别为0.565 8、0.649 30、.586 4;与8月降水量在0.10水平上呈显著正相关,相关系数为0.504 2。对牧草产量与生育期间水分和热量各因子进行多元逐步回归分析表明,降水因子对牧草产量起正向促进作用,热量因子对牧草产量起负向作用。
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| 关 键 词： | 三江源 高寒草地 牧草产量 相关分析 回归分析 |
Effect of Precipitation and Temperature on Pasture Yield of Grassland with High Elevation and Cold Climate in Three Rivers Source |
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| ZHANG Dong-jie. Effect of Precipitation and Temperature on Pasture Yield of Grassland with High Elevation and Cold Climate in Three Rivers Source[J]. Guizhou Agricultural Sciences, 2011, 39(1) |
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| Authors: | ZHANG Dong-jie |
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| Affiliation: | ZHANG Dong-jie(Qinghai Technical College of Animal Husbandry and Veterinary,Huangyuan,Qinghai 812100,China) |
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| Abstract: | The relationship between pasture yield and precipitation,temperature was studied by analyzing these correlation data in Xinghai county,Qinghai from 1999 to 2009 to study the effect of precipitation and temperature on pasture yield of grassland with high elevation and cold climate.The results showed that there was a significant negative correlation between pasture yield and the accumulation temperature in June and the correlation coefficient was-0.5793,there were significant positive correlations between pas... |
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| Keywords: | three rivers source grassland with high elevation and cold climate pasture yield correlation analysis regression analysis |
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