Temporal and Spatial Variation in Vegetation Coverage and Its Response to Climatic Change in Marshes of Sanjiang Plain, China

Sanjiang Plain is the most extensive marsh distribution region in China. Marshes in this region can protect biodiversity, regulate climate, and provide habitats for wild animals and plants. The normalized difference vegetation index (NDVI) is a crucial indicator of vegetation coverage, which may ref...

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Bibliographic Details
Published in:Atmosphere 2022-12, Vol.13 (12), p.2077
Main Authors: Liu, Yiwen, Shen, Xiangjin, Zhang, Jiaqi, Wang, Yanji, Wu, Liyuan, Ma, Rong, Lu, Xianguo, Jiang, Ming
Format: Article
Language:English
Subjects:
Biodiversity
Climate change
Climatic changes
Datasets
Daytime
Ecosystem structure
Ecosystems
Environmental aspects
Growing season
Influence
marsh
Marshes
MODIS
NDVI
Normalized difference vegetative index
Plant cover
Plant growth
Plants (botany)
Precipitation
Spatial variations
Vegetation
Vegetation dynamics
Vegetation growth
Vegetation index
wetland
Wetlands
Wild animals
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Summary:Sanjiang Plain is the most extensive marsh distribution region in China. Marshes in this region can protect biodiversity, regulate climate, and provide habitats for wild animals and plants. The normalized difference vegetation index (NDVI) is a crucial indicator of vegetation coverage, which may reflect ecosystem structure and functional features. Clarifying the spatiotemporal change of marsh coverage and its climatic drivers is vital for observing and predicting vegetation change in Sanjiang Plain. Using meteorological dataand MODIS NDVI data from 2000 to 2020, we analyzed the spatiotemporal variation in marsh vegetation coverage and climatic change effects in Sanjiang Plain. We found that the growing season vegetation NDVI of marsh increased significantly at a rate of 0.011/decade, indicating that the marsh vegetation growth has obviously improved during the past 21 years. Furthermore, we found that the increase of minimum (Tmin) and maximum (Tmax) temperature in July can significantly promote the marsh plant growth, and increasing nighttime Tmin has a stronger impact on promoting the growth than increasing daytime Tmax in this month. In addition, the increase of daytime Tmax in August can promote the marsh vegetation growth, whereas the increasing precipitation in August was unfavorable for the growth in Sanjiang Plain.
ISSN:2073-4433
2073-4433
DOI:10.3390/atmos13122077