| 全球热带森林分布区NPP变化及其气候响应分析 |
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| 引用本文： | 杨瑞芳,尹思阳.全球热带森林分布区NPP变化及其气候响应分析[J].测绘通报,2021,0(5):49-53,110. |
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| 作者姓名： | 杨瑞芳 尹思阳 |
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| 作者单位： | 1. 测绘出版社有限公司, 北京 100054;2. 北京师范大学地理科学学部遥感科学国家重点实验室, 北京 100875 |
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| 基金项目： | 国家重点研发计划(2016YFA0600304) |
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| 摘 要： | 本文基于MODIS遥感数据,利用掩膜分析提取了研究区的NNP数据;并结合气象因子数据,利用地理信息技术及数学统计方法,对比分析了2001—2013年全球3个主要热带森林分布区森林NPP变化及其气候响应的异同。结果表明,研究区NPP总量整体呈减少趋势。对比3个区域NPP与温度、降水和光合有效辐射(PAR)的相关关系,亚马孙流域研究区和刚果河流域研究区NPP对PAR变化更为敏感,东南亚研究区NPP对降水变化更为敏感;东南亚研究区NPP对气候变化响应的敏感性较高,刚果河流域研究区次之,亚马孙流域研究区最低。该研究对于进一步了解全球热带森林变化与气候的相关关系具有一定的参考价值。
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| 关 键 词： | 热带森林 NPP MODIS 气候变化 对比分析 |
| 收稿时间： | 2020-09-15 |
Analysis of the variation of NPP and its responses with climate changes of global tropical forests |
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| YANG Ruifang,YIN Siyang.Analysis of the variation of NPP and its responses with climate changes of global tropical forests[J].Bulletin of Surveying and Mapping,2021,0(5):49-53,110. |
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| Authors: | YANG Ruifang YIN Siyang |
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| Affiliation: | 1. Surveying and Mapping Press Co., Ltd., Beijing 100054, China;2. State Key Laboratory of Remote Sensing Science, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China |
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| Abstract: | Based on MODIS data,using mask analysis to extract NNP data of the study area, and combined with meteorological factor data,we compare the NPP variation and its climate response among three main tropical forests in the world from 2001 to 2013 through geographical information technology and statistical methods. Results show that the total NPP of the whole study area has a decreasing tendency. Comparing the correlations between NPP and temperature, precipitation as well as photosynthetically active radiation (PAR), we find that the NPP of Amazon basin and Congo basin sub-study areas are more sensitive to the change of temperature, while Southeast Asia sub-study area is more sensitive to the change of precipitation. Among the three sub-study areas, Southeast Asia sub-study area has a relative close relationship between NPP and climatic factors, Congo basin sub-study areatake second place, and Amazon basin sub-study area at the end. This study has a certain reference value for further understanding the relationship between global tropical forest change and climate. |
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| Keywords: | tropical forests NPP MODIS climate change comparative analysis |
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