Vegetation greenness and photosynthetic phenology in response to climatic determinants
نویسندگان
چکیده
Vegetation phenology is a key indicator of vegetation-climate interactions and carbon sink changes in ecosystems. Therefore, it very important to understand the temporal spatial variability vegetation driving climatic determinants [e.g., temperature (Ts) soil moisture (SM)]. greenness photosynthetic were derived using double logistic (DL) method enhance index (EVI) solar-induced chlorophyll fluorescence (SIF) spring autumn phenology, respectively. The growing season length (GSL) (about 100 days) EVI was longer than GSL 80 SIF. Although their overall spatiotemporal pattern trends consistent, varied 1.4 3.1 times more over time. In addition, SIF-based EVI-based showed consistent factors drivers but differed some extent patterns most relevant preseason dates. Spring mainly influenced by pre-season mean cumulative Ts 90 days). However, controlled both pre-seasons [(about 55 SM 40 days)]. Autumn periods’ 20 days)], (85 comparison analysis SIF helps difference between at regional scale.
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ژورنال
عنوان ژورنال: Frontiers in forests and global change
سال: 2023
ISSN: ['2624-893X']
DOI: https://doi.org/10.3389/ffgc.2023.1172220