摘要
利用三江源玛沁县五年的气候资料,分析了气温和降水的变化,以及两种草地气候生产力模型的对比。结果表明:(1)三江源玛沁县2000年至2004年年平均温先逐渐增加,直到2003年后开始下降。年降水量波动比较大。(2)M iam i模型和Thornthwaite Memorial模型计算得出的NPP产量呈现一定的差异,前者平均温度因子影响比较显著,而后者是年降水量起主要因素。(3)选择适当的模型计算植被的第一生产力要依据当地的植被类型。
This paper was take advantage of Climate data of Maqin County in the 5ource Kegions of Yangtze River during the five years, analyze the change of average temperature and annual precipitation, compare to Grassland Climate Productivity models. The result showed that the average temperature was raising, and then un- til in 2003. There were relatively large fluctuations in annual precipitation. NPP were difference between Miami model and Thornthwaite Memorial model. The average temperature on the NPP by Miami model was significant, but the annual precipitation on the NPP by Thornthwaite Memorial model was significant. Select the appropriate model of Grassland climate Productivity was based on local vegetation types.
出处
《青海草业》
2010年第4期2-5,共4页
Qinghai Prataculture
关键词
气候
三江源
草地气候生产力
Climate
The source regions of Yangtze River
Grassland Productivity
