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[1]SU Fanjie,WANG Jiasheng,WANG Zhiming,et al.Temporal and Spatial Changes of Vegetation Phenology and Its Response to Climate Change in Nanpan River Basin from 2001 to 2020[J].Research of Soil and Water Conservation,2022,29(05):220-227.

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Temporal and Spatial Changes of Vegetation Phenology and Its Response to Climate Change in Nanpan River Basin from 2001 to 2020

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 05 Page number: 220-227 Column: Public date: 2022-08-20

Title:: Temporal and Spatial Changes of Vegetation Phenology and Its Response to Climate Change in Nanpan River Basin from 2001 to 2020

Author(s):: SU Fanjie^1,2, WANG Jiasheng^1,2, WANG Zhiming^2,3, CHEN Xinya^2,3, WANG Limeng^2,3, YANG Kun^1,2; (1.Faculty of Geography, Yunnan Normal University, Kunming 650500, China; 2.The Engineering Research Center of GIS Technology in Western China of Ministry of Education of China, Kunming 650500, China; 3.School of Information Science and Technology, Yunnan Normal University, Kunming 650500, China)

Keywords:: phenological parameters; Nanpanjiang River Basin; climate change; temporal and spatial change characteristics

CLC:: Q142.2

DOI:: -

Abstract:: Vegetation phenology is sensitive to climate and easy to be observed, which is an important index for observing ecological change and global climate change. It is of great significance for understanding the complex relationship between global climate change and vegetation to study the changes of vegetation phenological and its response to climate. To reveal the spatial and temporal changes of vegetation phenology and its response to climate in the Nanpan River Basin in the past 20 years, based on EVI(MOD13Q1-EVI)of 2001—2020, we took Nanpan River Basin as the study area, obtained the parameters of vegetation phenology and analyzed spatio-temporal distribution characteristics using S-G filter, dynamic threshold method, Sen slope analysis method and correlation analysis method, and analyzed the impact of climate changes on SOS(start of the growing season), EOS(end of the growing season)and LOS(length of the growing season)using partial correlation coefficient. The results showed:(1)from 2001 to 2020, the phenological characteristics of Nanpan River Basin changed greatly, with SOS advancing, EOS and LOS delaying and extending; the phenological changes had spatial heterogeneity, and the phenology of vegetation in different sub-basins was quite different;(2)vegetation phenology changes were affected by terrain, and EOS ended earlier with elevation; the pattern of SOS changing with altitude was opposite to that of LOS, and there were boundaries of 1 000 m, 2 000 m and 2 600 m;(3)the change of SOS in Nanpan River Basin was positively correlated with temperature and precipitation, while EOS was positively correlated with temperature and negatively correlated with precipitation. This study can provide a scientific basis for the ecological environment protection and sustainable development of vegetation resources in the Nanpan River Basin.

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Last Update: 2022-08-20