According to the distribution of arid and humid regions in China,the typical arid region (Erjina),the typical semi-arid/semi-humid region (Guanzhong basin/Loess Plateau) and the typical humid region (Poyang Lake basin) were selected as the study areas.Based on NDVI data from 1982 to 2000 and meteorological observing data of three study areas from 1981 to 2000,the interactions between vegetation NDVI and climatic factors (temperature and precipitation) in typical arid and humid regions were discussed in this study.The results showed that in the responses of vegetation to climatic factors,vegetation in the typical arid region (Erjina) was more sensitive to precipitation,while vegetation in the typical semi-arid/semi-humid region (Guanzhong basin/Loess Plateau) was more sensitive to both temperature and precipitation,and vegetation in the typical humid region (Poyang Lake basin) was more sensitive to temperature.As for effects of vegetation on climatic factors,there was a remarkable negative correlation between vegetation NDVI in the past winter and temperature in the present summer,and also a significant positive correlation between vegetation NDVI in the past winter and precipitation in the present summer.However,in the typical semi-arid/semi-humid region (Guanzhong basin/Loess Plateau),there was a significant positive correlation between vegetation NDVI in the present spring and temperature in the present summer.
利用1961-2000年赣州站、南昌站的年太阳总辐射与相关气象要素资料，结合Penman公式，运用6种计算净长波辐射的方法估算了两站的年太阳总辐射；建立了估算该地区年太阳总辐射的绝对误差权重法（Method of Absolute Errors，MAE），并给出了适用于江西省的绝对误差权重系数，以此方法计算了江西省其他76站的年太阳总辐射；并分析了该地区年太阳总辐射的时空分布特征及其变化趋势，发现：（1）1961～2000年间，江西省大部分地区太阳总辐射在3800-4400MJ·m-2·a-1；南部偏东地区较大，且存在有一大值中心；西部地区为江西省太阳总辐射最小的地区；（2）40年间，江西省年太阳总辐射呈明显下降趋势，每10年减少143．70MJ·m-2。78站中，有63站的太阳总辐射的下降趋势通过了a=0．05的显著性检验，8站表现为上升趋势；江西省北部及南部地区太阳总辐射下降较大；中部地区下降相对较小，且在鄱阳湖东侧有一低值中心。
