Satellite-observed changes in terrestrial vegetation growth trends across the Asia-Pacific region associated with land cover and climate from 1982 to 2011
Satellite-observed changes in terrestrial vegetation growth trends across the Asia-Pacific region associated with land cover and climate from 1982 to 2011
复制标题
1982年至2011年亚太地区陆地植被生长趋势与土地覆盖和气候相关的卫星观测变化
DOI：
10.1080/17538947.2016.1180549
复制
发表时间：
2016-01-01
影响因子：
5.1
通讯作者：
Myneni, Ranga B.
中科院分区：
文献类型：
--
作者：
Chen, Baozhang;Xu, Guang;Myneni, Ranga B.
近几十年来，亚太地区经历了比全球平均水平更快的变暖，经历了更多的极端气候，但人们对植被生长对这些变化的反应知之甚少。更新的全球清查、建模和绘图研究、第三代全球卫星高级甚高分辨率辐射计归一化差异植被指数数据集和网格化再分析气候数据被用于调查植被动态指标和气候变量趋势的时空变化。然后，我们进一步分析了它们与整个AP地区土地覆盖的关系。主要研究结果如下：（1）在大陆尺度上，亚太地区近30年来植被生长总体上呈现出逐渐显著的增长趋势，而这种变化趋势与气温的增长趋势相对应，但并不显著：（2）亚太地区植被生长与太平洋年代际振荡指数和厄尔尼诺/南方涛动（ENSO）呈显著负相关;（3）在像元尺度上，除澳大利亚外，大部分研究区域植被生长和气温均显著增加，且植被生长与气温空间相关;在澳大利亚等水分有限区域，植被生长与降水正相关。
The Asia-Pacific (AP) region has experienced faster warming than the global average in recent decades and has experienced more climate extremes, however little is known about the response of vegetation growth to these changes. The updated Global Inventory Modeling and Mapping Studies third-generation global satellite Advanced Very High Resolution Radiometer Normalized Difference Vegetation Index dataset and gridded reanalysis climate data were used to investigate the spatiotemporal changes in both trends of vegetation dynamic indicators and climatic variables. We then further analyzed their relations associated with land cover across the AP region. The main findings are threefold: (1) at continental scales the AP region overall experienced a gradual and significant increasing trend in vegetation growth during the last three decades, and this NDVI trend corresponded with an insignificant increasing trend in temperature; (2) vegetation growth was negatively and significantly correlated with the Pacific Decadal Oscillation index and the El Nino/Southern Oscillation (ENSO) in AP; and (3) at pixel scales, except for Australia, both vegetation growth and air temperature significantly increased in the majority of study regions and vegetation growth spatially correlated with temperature; In Australia and other water-limited regions vegetation growth positively correlated with precipitation.