巴音布鲁克高寒草地牧草产量与水热关系初步探讨

The primary discussion the relationship between the forage yields in alpine grassland and temperature and rainfall in Bayinbuluk

通过对巴音布鲁克草原近20年牧草产量与同期降水和温度资料进行对比分析,探讨了降水、温度等气象因子对高寒草地牧草产量的影响。结果显示:降水、气温与牧草产量的相关性均较好,只有在降水和温度均适宜的条件下,牧草产量才会增加,说明降水和温度共同影响了牧草产量,是影响高寒草地产量的2 个主要限制性因子;在巴音布鲁克,由于不同草地类型间的自然条件存在较大差异,因此对水热变化的响应也表现出不同的变化特点。

The effects of precipitation and temperature on the forage yield in alpine grassland in Bayinbuluk were discussed by comparing the last 20 years of forage yields and the meteorological information of rainfall and temperature. The result showed that the correlations between temperature, rainfall and forage yields were significant. Only when both rainfall and temperature were all suitable, the forage yields increased, indicating that the two factors affected the yield together. In Batinbuluk, different grassland types gave different responses to rainfall and temperature changes, because of distinct natural difference among them.