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Efficient absorption of green light by the canopy of a monoculture coniferous forest

文献类型：期刊论文

作者Kang, Huixing4; Han, Jiayin3; Mu, Xihan2; Chen, Jin2; Zhang, Leiming1; Tang, Yanhong4
刊名AGRICULTURAL AND FOREST METEOROLOGY
出版日期2024-05-15
卷号351页码:10
关键词Chlorophyll Diffuse radiation Green light Leaf area index Light quality Light extinction
ISSN号0168-1923
DOI10.1016/j.agrformet.2024.110006
英文摘要Leaves absorb red and blue light more efficiently than green light. Within a spatially heterogeneous canopy, both the sieve effect and the detour effect contribute to an increase in the absorption of green light relative to that of red and blue light. Such an increase in the relative absorption of green light tends to be intensified with increasing canopy depth. Consequently, the absorption of green light could be comparable to that of red and blue light when the leaf area index of a canopy is sufficiently high. However, there is no field observational evidence to test this hypothesis. We investigated the spectral composition of downward and upward solar radiation at multiple heights within a temperate larch forest and reconstructed light absorption profiles at three representative wavelengths. With increasing depths from the top of the canopy, absorption of red (680 nm) and green light (550 nm) decreased; but the latter decreased more gradually. Consequently, absorption of green light surpassed that of red light after an equilibrium point (e.g., 19.5 m height above the ground at high sun angles under clear skies) was reached. Absorptance of green light by the canopy (0.5-22 m) was 93.3 %, only slightly lower than that of red (95.0 %) and blue light (460 nm, 93.6 %). Moreover, absorption of green light decreased more gradually and the lower part of the canopy absorbed more green light at low sun angles and under overcast skies, in comparison with those at high sun angles under clear skies. Our results demonstrate that forest canopy can efficiently absorb green light. This finding calls for reconsideration on the role of green light in canopy photosynthesis and photomorphogenesis.
WOS关键词PHOTOSYNTHETICALLY ACTIVE RADIATION ; SPECTRAL DISTRIBUTION ; LEAF PHOTOSYNTHESIS ; SPINACH LEAVES ; CRYPTOCHROME ; CHLOROPHYLL ; QUALITY ; BEECH ; BLUE ; RED
资助项目National Natural Science Foundation of China[32101296] ; Ministry of Science and Technology of the People's Republic of China[2022YFF0801802]
WOS研究方向Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
语种英语
WOS记录号WOS:001230428900001
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; Ministry of Science and Technology of the People's Republic of China
源URL[http://ir.igsnrr.ac.cn/handle/311030/205633]  
专题生态系统网络观测与模拟院重点实验室_外文论文
通讯作者Kang, Huixing; Tang, Yanhong
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China
2.Beijing Normal Univ, Fac Geog Sci, State Key Lab Remote Sensing Sci, Beijing, Peoples R China
3.Beijing Forestry Univ, Sch Ecol & Nat Conservat, Beijing, Peoples R China
4.Peking Univ, Inst Ecol, Coll Urban & Environm Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Kang, Huixing,Han, Jiayin,Mu, Xihan,et al. Efficient absorption of green light by the canopy of a monoculture coniferous forest[J]. AGRICULTURAL AND FOREST METEOROLOGY,2024,351:10.
APA Kang, Huixing,Han, Jiayin,Mu, Xihan,Chen, Jin,Zhang, Leiming,&Tang, Yanhong.(2024).Efficient absorption of green light by the canopy of a monoculture coniferous forest.AGRICULTURAL AND FOREST METEOROLOGY,351,10.
MLA Kang, Huixing,et al."Efficient absorption of green light by the canopy of a monoculture coniferous forest".AGRICULTURAL AND FOREST METEOROLOGY 351(2024):10.

入库方式： OAI收割

来源：地理科学与资源研究所

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