| 1982-2006年中国东部春季植被变化(英文) |
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| 引用本文： | 张学珍,戴君虎,葛全胜.1982-2006年中国东部春季植被变化(英文)[J].地理学报(英文版),2013,23(1):45-56. |
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| 作者姓名： | 张学珍 戴君虎 葛全胜 |
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| 作者单位： | Institute of Geographic Sciences and Natural Resources Research, CAS |
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| 基金项目： | China Global Change Research Program, No.2010CB951801; No.2010CB950903;National Natural Science Foundation of China, No.41001122; No.41030101 |
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| 摘 要： | Vegetation greenness is a key indicator of terrestrial vegetation activity. To under-stand the variation in vegetation activity in spring across eastern China (EC), we analysed the variation in the Normalised Difference Vegetation Index (NDVI) from April to May during 1982-2006. The regional mean NDVI across EC increased at the rate of 0.02/10yr (r2=0.28; p=0.024) prior to 1998; the increase ceased, and the NDVI dropped to a low level thereafter. However, the processes of variation in the NDVI were different from one region to another. In the North China Plain, a cultivated area, the NDVI increased (0.03/10yr; r2=0.52; p<0.001) from 1982 to 2006. In contrast, the NDVI decreased (-0.02/10yr; r2=0.24; p=0.014) consecu-tively from 1982 to 2006 in the Yangtze River and Pearl River deltas, two regions of rapid urbanisation. In the eastern region of the Inner Mongolian Plateau and the lower reaches of the Yangtze River in East China, the NDVI increased prior to 1998 and decreased thereafter. In the Hulun Buir area and the southern part of the Yangtze River Basin, the NDVI increased prior to 1998 and remained static thereafter. The NDVI in the grasslands and croplands in the semi-humid and semi-arid areas showed a significant positive correlation with precipitation, while the NDVI in the woodlands in the humid to semi-humid areas showed a significant positive correlation with temperature. As much as 60% of the variation in the NDVI was ex-plained by either precipitation or temperature.
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| 关 键 词： | 中国东部 植被活动 半湿润地区 NDVI 珠江三角洲地区 正相关关系 呼伦贝尔地区 植被指数 |
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