利用遥感数据,以异于传统的点分析方法分析水热条件对植被的影响。以青藏高原为研究区域,利用2003年的遥感数据进行分析。结果表明,在时间轴上,叶面积指数和温度、土壤水分、降雨存在着良好的相关性;在空间分布上,叶面积指数和三者的相关性在大部分区域是呈良好的正相关,在部分区域呈现了弱相关和负相关,且分析探讨了出现这种现象的原因。
The growth of vegetation is affected by water/thermal conditions and, in a certain area, there exists a definite relationship between the water/thermal condition and the climate. It is hence very important to probe into the influence of water/thermal conditions on vegetation growth. In this paper, the remote sensing data different from data based on the points in the traditional method were used to do research work in Qinghai -Tibet Plateau. The authors analyzed the remote sensing data of 2003 and the results show that in the time domain, there exists a good correlation between LAI and temperature, soil moisture, and precipitation, and in the spatial domain, the correlation in most of the area is also good. Nevertheless, there also exist some weak and negative correlations, which are also discussed in this paper.