Spatial-temporal heterogeneity of spring phenology in boreal forests as estimated by satellite solar-induced chlorophyll fluorescence and vegetation index

环境科学 北方的 泰加语 物候学 植被(病理学) 中分辨率成像光谱仪 常绿 气候学 大气科学 自然地理学 叶绿素荧光 增强植被指数 经度 纬度 归一化差异植被指数 生态学 卫星 地理 叶面积指数 叶绿素 生物 地质学 医学 植物 植被指数 大地测量学 病理 工程类 航空航天工程
作者
Dongyan Shi,Yuan Jiang,Yuan Jiang,Wen Yan,Fang Wu,Shoudong Zhao
出处
期刊:Agricultural and Forest Meteorology [Elsevier]
卷期号:346: 109888-109888
标识
DOI:10.1016/j.agrformet.2024.109888
摘要

Changes in spring phenology in boreal forests around the subarctic region have a profound impact on the global carbon and water cycles. To date, photosynthesis and greenness dynamics in evergreen coniferous forests have been found to be decoupled on a large scale, but whether the spatial heterogeneity of seasonal dynamics in boreal forests is coupled in various datasets remains unclear. Therefore, based on the solar-induced chlorophyll fluorescence (SIF) retrieved by satellite and the modelled SIF (GOME-2 SIF and GOSIF) during 2007–2018, we calculated the start of the growing season (SOS) of boreal forests (45–70°N) and compared the results with 2-band Enhanced Vegetation Index (EVI2) phenological products (MCD12Q2 C6) and flux data (Gross primary productivity, GPP) phenology. The spatial-temporal variations in the SOS were analyzed by linear regression and piecewise linear regression. The results exhibited that GOME-2 SIF showed an SOS of 11 days earlier than GOSIF, 8 days earlier than EVI2 in North America, and 5 days earlier than GOSIF, 3 days earlier than EVI2 in Eurasia. However, all relationships between SOSs of the three remote sensing datasets were significant in North America and Eurasia, and the significance was higher in Eurasia. With increasing latitude and longitude, almost all SOSs estimated from the three datasets significantly increased. Also, both in North America and Eurasia, the SOSs exhibited a trend of being advanced to being delayed from the western to the eastern parts of the continents over 2007–2018. This indicated the spatial consistency of photosynthesis and greenness dynamics in the spring phenology of boreal forests, especially in Eurasia. In this study, the validity of the spatial-temporal variation in spring phenology of boreal forests based on GOME-2 SIF retrieved from satellites and MCD12Q2 C6 was confirmed, and further exploration is needed to determine their potential advantages.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
桐桐应助HJCKYCG采纳,获得10
1秒前
1秒前
开放雪碧完成签到,获得积分10
2秒前
2秒前
芈冖完成签到,获得积分10
3秒前
4秒前
神经娃完成签到,获得积分10
4秒前
科研老炮发布了新的文献求助10
5秒前
bonnieeee777完成签到,获得积分10
5秒前
lucky花生完成签到,获得积分10
6秒前
lsx完成签到,获得积分10
6秒前
andrew发布了新的文献求助10
6秒前
专注水池完成签到,获得积分20
6秒前
赘婿应助L123采纳,获得10
7秒前
天天完成签到,获得积分10
8秒前
Ganlou应助研友_p采纳,获得10
9秒前
9秒前
隐形紫易发布了新的文献求助10
9秒前
白华苍松发布了新的文献求助10
11秒前
12秒前
搜集达人应助某某某采纳,获得10
12秒前
12秒前
aaronzhu1995完成签到,获得积分10
12秒前
Dr. Hu发布了新的文献求助10
13秒前
王sir完成签到 ,获得积分10
13秒前
13秒前
顾矜应助wallonce采纳,获得10
13秒前
14秒前
lili发布了新的文献求助10
14秒前
15秒前
17秒前
17秒前
weishen完成签到,获得积分0
17秒前
隐形紫易完成签到,获得积分10
18秒前
纵念发布了新的文献求助10
19秒前
灵巧白安完成签到 ,获得积分10
21秒前
LHJZS发布了新的文献求助10
22秒前
徐栀完成签到 ,获得积分10
25秒前
纵念完成签到,获得积分10
25秒前
26秒前
高分求助中
Licensing Deals in Pharmaceuticals 2019-2024 3000
Effect of reactor temperature on FCC yield 2000
Very-high-order BVD Schemes Using β-variable THINC Method 1020
PraxisRatgeber: Mantiden: Faszinierende Lauerjäger 800
Near Infrared Spectra of Origin-defined and Real-world Textiles (NIR-SORT): A spectroscopic and materials characterization dataset for known provenance and post-consumer fabrics 610
Mission to Mao: Us Intelligence and the Chinese Communists in World War II 600
MATLAB在传热学例题中的应用 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3304255
求助须知:如何正确求助?哪些是违规求助? 2938283
关于积分的说明 8487981
捐赠科研通 2612671
什么是DOI,文献DOI怎么找? 1426863
科研通“疑难数据库(出版商)”最低求助积分说明 662855
邀请新用户注册赠送积分活动 647365