2000–2015年柴达木盆地植被物候时空变化及其对气候变化的响应（英文）

编号 zgly0001583899

文献类型 期刊论文

文献题名 2000–2015年柴达木盆地植被物候时空变化及其对气候变化的响应（英文）

作者 付阳  陈辉  牛慧慧  张斯琦  杨祎 

作者单位 CollegeofResourcesandEnvironmentSciences  HebeiNormalUniversity  HebeiKeyLaboratoryofEnvironmentalChangeandEcologicalConstruction 

母体文献 Journal of Geographical Sciences 

年卷期 2018年04期

年份 2018 

分类号 P467 

关键词 QaidamBasin  climatechanges  remotesensingphenology  timeseriesreconstruction 

文摘内容 Based on TIMESAT 3.2 platform, MODIS NDVI data(2000–2015) of Qaidam Basin are fitted, and three main phenological parameters are extracted with the method of dynamic threshold, including the start of growth season(SGS), the end of growth season(EGS) and the length of growth season(LGS). The spatial and temporal variation of vegetation phenology and its response to climate changes are analyzed respectively. The conclusions are as follows:(1) SGS is mainly delayed as a whole. Areas delayed are more than the advanced in EGS, and EGS is a little delayed as a whole. LGS is generally shortened.(2) With the altitude rising, SGS is delayed, EGS is advanced, and LGS is shortened and phenophase appears a big variation below 3000 m and above 5000 m.(3) From 2000 to 2015, the temperature appears a slight increase along with a big fluctuation, and the precipitation increases evidently.(4) Response of phenophase to precipitation is not obvious in the low elevation humid regions, where SGS arrives early and EGS delays; while, in the upper part of the mountain regions, SGS delays and EGS advances with temperature rising, SGS arrives early and EGS delays with precipitation increasing.