Dong Lu, Zhao Jie, Liu Xue Jia, DU Zi Qiang, Wu Zhi Tao, Zhang Hong
Institute of Loess Plateau, Shanxi University, Taiyuan 030006, China.
College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, Shaanxi, China.
Ying Yong Sheng Tai Xue Bao. 2019 Jul;30(7):2165-2170. doi: 10.13287/j.1001-9332.201907.023.
Combined with the normalized difference vegetation index (NDVI) dataset, vegetation type data, and meteorological data, we revealed the variation of vegetation growth responses to air temperature in the growing-season during 1982-2015 in Xinjiang, using the moving-windows based partial correlation analysis, the unitary linear regression analysis and GIS spatial analysis. Results showed that, in the whole growing-seasons of study period, there was a significant downturn trend in the responses of vegetation growth to temperature. At the seasonal scale, the downturn trend was obvious especially in summer and autumn, while it was in adverse in spring. During the whole gro-wing season, the responses of different vegetation types to air temperature change showed a decreasing trend. Seasonally, the responses of grassland and forest to temperature change showed a significant increase, while that of shrubland and desert were exactly the opposite in spring. The responses of all natural vegetation (grassland, shrubland, desert and forest) to temperature change showed a significant decreasing trend in summer, whereas their responses in autumn had no significant statistical characteristics. Spatially, the decreasing influence of temperature on the vegetation growth during the growing season in Xinjiang was universal, which might be due to the change in precipitation and solar radiation.
结合归一化植被指数（NDVI）数据集、植被类型数据和气象数据，我们利用基于移动窗口的偏相关分析、一元线性回归分析和GIS空间分析，揭示了1982 - 2015年新疆生长季植被生长对气温响应的变化。结果表明，在研究期的整个生长季，植被生长对温度的响应呈显著下降趋势。在季节尺度上，这种下降趋势在夏季和秋季尤为明显，而在春季则相反。在整个生长季，不同植被类型对气温变化的响应呈下降趋势。季节上，草地和森林对温度变化的响应在春季显著增加，而灌丛和荒漠则正好相反。所有天然植被（草地、灌丛、荒漠和森林）对温度变化的响应在夏季呈显著下降趋势，而它们在秋季的响应没有显著的统计特征。在空间上，新疆生长季气温对植被生长的影响减弱是普遍现象，这可能是由于降水和太阳辐射的变化所致。
