初级生产
物候学
植被(病理学)
环境科学
生长季节
纬度
降水
气候变化
生态系统
经度
生产力
大气科学
自然地理学
气候学
生态学
地理
气象学
生物
地质学
医学
经济
宏观经济学
大地测量学
病理
作者
Mingrui Limu,Shaodong Huang,Jia Wang
出处
期刊:IEEE Geoscience and Remote Sensing Letters
[Institute of Electrical and Electronics Engineers]
日期:2024-01-01
卷期号:21: 1-5
标识
DOI:10.1109/lgrs.2024.3355153
摘要
The study of vegetation phenology and net primary production (NPP) plays a crucial role in understanding how ecosystems react to climate change. This study monitored vegetation phenology and NPP in Northeast China (NEC) from 2001 to 2022. The results showed that: (1) Variations in latitude and longitude had a highly significant effect (p<0.01) on all vegetation phenology parameters. Besides, SOS (start of growing season), EOS (end of growing season), and LOS (length of growing season) in NEC exhibited advancing (-0.26 days/a), delaying (0.14 days/a), and prolonging (0.40 days/a) tendencies, respectively. Forest EOS had advanced (-0.13 days/a) instead. (2) SOS, EOS, and NPP showed a negative correlation, while LOS, SIV (small intergral value) and NPP were positively correlated. Among them, the strongest correlation (r = 0.74) was found between SIV and NPP scatter points. The correlation between NPP and vegetation phenology under different precipitation and temperature circumstances is complicated. This study can serve as a resource for comprehending the responses of vegetation phenology in NEC to climate change.
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