文献类型：期刊文献

英文题名：Temporal Variation in Tower-Based Solar-Induced Chlorophyll Fluorescence and Its Environmental Response in a Chinese Cork Oak Plantation

作者：Hu, Meijun[1,2,3] Cheng, Xiangfen[1,2,3] Zhang, Jinsong[1,2,3] Huang, Hui[1,2,3] Zhou, Yu[1,2,3] Wang, Xin[1,2,3] Pan, Qingmei[1,2,3] Guan, Chongfan[1,2,3]

第一作者：Hu, Meijun

通信作者：Zhang, JS[1];Zhang, JS[2];Zhang, JS[3]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, Key Lab Tree Breeding & Cultivat, Natl Forestry & Grassland Adm, Beijing 100091, Peoples R China;[2]Nanjing Forest Univ, Collaborat Innovat Ctr Sustainable Forestry Southe, Nanjing 210037, Peoples R China;[3]Henan Xiaolangdi Earth Crit Zone Natl Res Stn Midd, Jiyuan 454650, Peoples R China

年份：2023

卷号：15

期号：14

外文期刊名：REMOTE SENSING

收录：;EI(收录号：20233114474769);Scopus(收录号：2-s2.0-85166247821);WOS:【SCI-EXPANDED(收录号:WOS:001036612900001)】；

语种：英文

外文关键词：SIF; temporal dynamic; tower-based observation; Quercus variabilis BI; plantation; environmental factors

摘要：With the development of spectrum observation technology, solar-induced chlorophyll fluorescence (SIF)-an effective substitute for photosynthesis-has been widely used to monitor crop stress, vegetation phenology and ecosystem productivity. The relationship between fluorescence and photosynthesis is complicated because they are sensitive to environmental changes. Understanding the response of SIF to environmental factors is of great significance for clarifying the variation dynamic and relationship between SIF and photosynthesis under different conditions. In this study, the canopy SIF and the environmental factors of a Quercus variabilis BI. plantation were observed simultaneously, and the response of SIF to environmental factors at a daily scale and at a half-hour scale was analyzed. The results showed that SIF had obvious seasonal and diurnal dynamics and was mainly driven by photosynthetically active radiation (PAR). The influence of PAR, air temperature (Ta), vapor pressure deficit (VPD), soil moisture (SM) and wind speed (Ws) on SIF varied with the lapse of the growing season. After eliminating the covariant effect of PAR on the Ta and VPD during the whole growing season, the relationship between VPD and SIF was found to be negative, and the effect of Ta on SIF disappeared. This study enriched the ground observation dataset and provided support for understanding the variations in the relationship between SIF and photosynthesis under different conditions.