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| 长江上游植被覆盖的时空分异季节变化及其驱动因子研究 | |
| 引用本文： | 廖建华,李丹勋,王兴奎,阎云霞.长江上游植被覆盖的时空分异季节变化及其驱动因子研究[J].环境科学学报,2009,29(5):1103-1112. |
| 作者姓名： | 廖建华 李丹勋 王兴奎 阎云霞 |
| 作者单位： | 1. 清华大学,水利水电工程系,水沙科学与水利水电工程国家重点实验室,北京100084;华中农业大学,资源与环境学院,武汉430070 2. 清华大学,水利水电工程系,水沙科学与水利水电工程国家重点实验室,北京100084 3. 中国科学院地理科学与资源研究所,中国科学院陆地水循环及地表过程重点实验室,北京100101 |
| 基金项目： | 国家重点基础研究发展规划(973计划)，国家科技支撑计划，国家自然科学基金 |
| 摘 要： | 以GIMMS/NDVl为基础,结合气候与人类活动数据,研究了1982～2003年间长江上游植被覆盖季节变化的空间分布.结果表明,近22年来,长江上游春季、夏季植被覆盖呈增加趋势,以春季最显著;秋季、冬季植被覆盖呈降低趋势,以秋季降低最显著.春季、夏季降雨与气温的同步增加,致使植被覆盖增加;秋季降雨减少,以及气温的增加导致植被覆盖降低;另外,作物播种面积的增加是春季、夏季植被覆盖增加,秋季、冬季植被覆盖减少的重要原因.春季→夏季→秋季→冬季NDVI增加的区域在窄问上大致呈现低纬度向高纬度转移的趋势.春季、夏季所有植被类型的NDVI均有增加趋势;而秋季所有植被类型的NDVI均降低;冬季植被除针叶林的NDVI略有增长外,其余植被类型的NDVI均降低. |
| 关 键 词： | 植被覆盖 时空分异 驱动因子 |
| 收稿时间： | 8/15/2008 9:47:48 PM |
| 修稿时间： | 2008/11/15 0:00:00 |
The spatial-temporal distribution of seasonal vegetation changes and their driving forces in the upper reaches of the Yangtze River |
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| LIAO Jianhu,LI Danxun,WANG Xingkui and YAN Yunxia.The spatial-temporal distribution of seasonal vegetation changes and their driving forces in the upper reaches of the Yangtze River[J].Acta Scientiae Circumstantiae,2009,29(5):1103-1112. | |
| Authors: | LIAO Jianhu LI Danxun WANG Xingkui and YAN Yunxia |
| Institution: | LIAO Jianhua1,3,LI Danxun1,WANG Xingkui1,YAN Yunxia2 1.State Key Laboratory of Hydroscience , Engineering,Department of Hydraulic Engineering,Tsinghua University,Beijing 1000842.Key Laboratory of Water Cycle , Related L, Surface Processes,Institute of Geographic Sciences , Natural Resources Research,Chinese Academy of Sciences,Beijing 1001013.College of Resources , Environment,Huazhong Agricultural University,Wuhan 430070 |
| Abstract: | Based on GIMMS/NDVI(Global Inventory Modelling and Mapping Studies/Normalized Difference Vegetation Index)data from 1982 to 2003,the seasonal changes of vegetation and their spatial patterns were explored.The results show that during the past 22 years the NDVI in the upper Yangtze River drainage basin increased in spring and summer,especially in spring;but decreased in autumn and spring,especially in autumn.It was found that the temperature and precipitation increased synchronously in spring and summer,whic... |
| Keywords: | vegetation cover spatial-temporal distribution driving force |
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