| 降水量季节分配对天然牧草产量的影响 |
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| 引用本文： | 蓟尚玛,郭连云.降水量季节分配对天然牧草产量的影响[J].贵州农业科学,2009,37(2). |
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| 作者姓名： | 蓟尚玛 郭连云 |
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| 作者单位： | 1. 青海省兴海县气象局,青海,兴海,813300
2. 青海省海南州气象局,青海,共和,813000 |
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| 摘 要： | 为了探讨降水量季节分配对草地产草量影响的一般规律.根据对三江源兴海县天然草场连续9年的牧草产量统计.分析了降水量及其季节分配对天然牧草产量的年度波动影响,并应用积分回归模型,计算出4月上旬至9月上旬各旬降水量对牧草产量的影响系数.结果表明:降水量的年度变化及其季节分配直接导致了天然牧草产量的年度波动;4月上旬至5月上旬、6月中旬至8月上旬及8月下旬至9月上旬的旬降水量对牧草产量均具有正效应,是牧草对水分需求的3个关键时期.
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| 关 键 词： | 降水量 季节分配 牧草产量 三江源 |
Influence of Seasonal Distribution of Precipitation on Natural Herbage Yield in the Three Rivers Source Areas |
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| JI Shang-ma,GE Lian-yun.Influence of Seasonal Distribution of Precipitation on Natural Herbage Yield in the Three Rivers Source Areas[J].Guizhou Agricultural Sciences,2009,37(2). |
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| Authors: | JI Shang-ma GE Lian-yun |
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| Institution: | 1. Meteorological Bureau in Xinghai County;Xinghai;Qinghai 813300;2.Meteorological Bureau in Hainan State of Qinghai Province;Gonghe;Qinghai 813000;China |
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| Abstract: | In order to obtain a common rule, the annual influence of precipitation and its seasonal distribution on natural herbage yield was analyzed based on the statistics data of herbage yield in continual 9 years from the natural pasture in Xinghai County. An integral regression model was applied to count the influence coefficient from the beginning of April to the beginning of September. The result shows that annual change of precipitation and its seasonal distribution induce a fluctuant yield of natural herbage... |
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| Keywords: | precipitation seasonal distribution herbage yield the Three Rivers Source Areas |
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