Analysis of the variation of NPP and its responses with climate changes of global tropical forests

doi:10.13474/j.cnki.11-2246.2021.0140

Abstract

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.

Key words: tropical forests, NPP, MODIS, climate change, comparative analysis

CLC Number:

P237

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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