NDVI, temperature and precipitation changes and their relationships with different vegetation types during 1998-2007 in Inner Mongolia, China
NDVI, temperature and precipitation changes and their relationships with different vegetation types during 1998-2007 in Inner Mongolia, China
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DOI：
10.1002/joc.3543
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发表时间：
2013-06-01
期刊：
影响因子：
--
通讯作者：
Bao, G.
中科院分区：
文献类型：
--
作者：
Chuai, X. W.;Huang, X. J.;Bao, G.
利用内蒙古自治区植被图、植被归一化植被指数资料和内蒙古118个气象站的气温、降水资料，分析了1998年4-10月内蒙古地区8种不同植被类型植被指数、气温和降水的变化，并进行了相关分析。我们还研究了季节相关性和滞后效应，结果表明，对于不同的植被类型，1998-2007年的NDVI变化表现出很大的差异。NDVI与温度和降水的相关性差异很大，具有明显的季节差异。不同植被类型和季节的滞后效应也不同。从总体上看，内蒙古正在变暖，大部分地区变得更加干燥，内蒙古的生态压力正在增加，因此，我们对这些问题的关注是重要的。版权所有(C)2012年英国皇家气象学会
Based on vegetation maps of Inner Mongolia, SPOT-VEGETATION normalized difference vegetation index (NDVI) data, and temperature and precipitation data from 118 meteorological stations, this study analysed changes in NDVI, temperature and precipitation, and performed correlation analyses of NDVI, temperature and precipitation for eight different vegetation types during the growing seasons (April-October) of the period 1998-2007 in Inner Mongolia, China. We also investigated seasonal correlations and lag-time effects, and our results indicated that for different vegetation types, NDVI changes during 1998-2007 showed great variation. NDVI correlated quite differently with temperature and precipitation, with obvious seasonal differences. Lag-time effects also varied among vegetation types and seasons. On the whole, Inner Mongolia is becoming warmer, and drier for most regions, and ecological pressure in Inner Mongolia is increasing, and our focus on such issues is therefore important. Copyright (c) 2012 Royal Meteorological Society