Tight coupling between leaf area index and foliage N content in arctic plant communities
نویسندگان
چکیده
منابع مشابه
Characterizing Leaf Area Index (LAI) and Vertical Foliage Profile (VFP)
Characterizing Leaf Area Index (LAI) and Vertical Foliage Profile (VFP) over the United States H. Tang, S. Ganguly, G. Zhang, M. A. Hofton, R. F. Nelson, and R. Dubayah Department of Geographical Sciences, University of Maryland, College Park, Maryland, USA Bay Area Environmental Research Institute (BAERI)/NASA Ames Research Center, Moffett Field, California, USA Biospheric Sciences Branch, Cod...
متن کاملCharacterizing leaf area index (LAI) and vertical foliage profile (VFP) over the United States
Leaf area index (LAI) and vertical foliage profile (VFP) are among the important canopy structural variables. Recent advances in lidar remote sensing technology have demonstrated the capability of accurately mapping LAI and VFP over large areas. The primary objective of this study was to derive and validate a LAI and VFP product over the contiguous United States (CONUS) using spaceborne wavefor...
متن کاملSome quantitative relationships between leaf area index and canopy nitrogen content and distribution.
In a previous study (Yin et al. 2000. Annals of Botany 85: 579-585), a generic logarithmic equation for leaf area index (L) in relation to canopy nitrogen content (N) was developed: L=(1/ktn)1n(1+ktnN/nb). The equation has two parameters: the minimum leaf nitrogen required to support photosynthesis (nb), and the leaf nitrogen extinction coefficient (ktn). Relative to nb, there is less informati...
متن کاملLeaf Area, Light Transmission, Roots and Leaf Damage in Nine Tropical Plant Communities
Ewel, J., Gliessman, S., Amador, M., Benedict, F., Berish, C., BermfJdez, R., Brown, B., Martfnez, A., Miranda, R. and Price, N., 1982. Leaf area, light transmission, roots and leaf damage in nine tropical plant communities. Agro-Ecosystems, 7: 305--326. The vertical distribution of leaf area by species; transmission of photosynthetically active radiation; root biomass and fine-root surface are...
متن کاملLeaf area index measurements
Leaf area index (LAI) is a key structural characteristic of forest ecosystems because of the role of green leaves in controlling many biological and physical processes in plant canopies. Accurate LA1 estimates are required in studies of ecophysiology, atmosphere-ecosystem interactions, and global change. The objective of this paper is to evaluate LA1 values obtained by several research teams us...
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ژورنال
عنوان ژورنال: Oecologia
سال: 2004
ISSN: 0029-8549,1432-1939
DOI: 10.1007/s00442-004-1733-x