Results 91 to 100 of about 223,542 (302)
Key soil health indicators under humid grazing lands
Grassland Research, EarlyView.Soil health can be described using a few key soil health indicators that target a diversity of soil functions. This perspective article highlights how forage management affects these soil health indicators in humid‐zone grazing lands. Abstract Background Soil health describes critical soil functions influenced by land management. Although some key soil
Alan J. Franzluebbers
wiley +1 more source
Undergrowth Structure and Natural Regeneration in Mixed Conifer-broadleaved Forest of the Southern Sikhote-Alin [PDF]
Журнал Сибирского федерального университета: Серия Биология, 2011 Analysis of structure and disturbance history of a mixed broadleaved-dark conifer-Korean pine forest is performed in Primorye, south part of the Sikhohe-Alin mountain range. Based on results of a dendrochronological and spatial analysis it is showed that
Olga N. Ukhvatkina, Alexander M. Omelko
doaj
Revista Árvore, 2017 It is well-known that conducting experimental research aiming the characterization of canopy structure of forests can be a difficult and costly task and, generally, requires an expert to extract, in loco, relevant information.
Thiago Yamada +3 more
doaj +1 more source
Workfare and forest cover: The case of NREGS in India
Journal of the Agricultural and Applied Economics Association, EarlyView.Abstract We examine the impacts of India's National Rural Employment Guarantee Scheme (NREGS), the world's largest workfare program, on forest cover as proxied by vegetation density. We estimate null effects on vegetation for the overall sample as well as for the subsample where we are best able to isolate changes in forest cover, but we find ...
Shourish Chakravarty +3 more
wiley +1 more source
Wild Animal Suffering Is Not Intractable: A Precautionary Approach to Compassionate Intervention
Journal of Applied Philosophy, EarlyView.ABSTRACT Wild animals suffer due to human activity, yet natural factors contribute far more significantly to their suffering. In light of this, some propose that we have a pro tanto obligation to intervene in ecosystems to improve wild animal welfare.
Tristan Katz
wiley +1 more source
Remote Sensing, 2018 The paper introduces a three-dimensional model to derive the spatial patterns of photosynthetically active radiation (PAR) reflected and absorbed by a non-uniform forest canopy with a multi-species structure, as well as a model algorithm application to ...
Natalia Levashova +3 more
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Assessing a macroalgal foundation species: community variation with shifting algal assemblages [PDF]
, 2018 Thesis (M.S.) University of Alaska Fairbanks, 2018Foundation species provide critical food and habitat to their associated communities. Consequently, they are disproportionately important in shaping community structure, promoting greater biodiversity and
Metzger, Jacob Ryan
core
Journal of International Development, EarlyView.ABSTRACT Field visits are common phenomena with non‐governmental organisations in Uganda. During these visits, Ugandan national staff guide visitors on series of meetings and interactions in the field. Following an actor‐oriented approach and drawing on ethnographic data on 14 field visits, this paper understands the field visit as a microcosm for the ...
Caspar Edward Swinkels
wiley +1 more source
Evaluation of canopy photosynthetic rate in erect-panicle rice using a photosynthetic model
Plant Production ScienceErect-panicle rice has the potential to improve rice production owing to its unique leaf canopy structure and high leaf nitrogen content (LNC). However, limiting information is available regarding its canopy photosynthesis of erect-panicle rice.
Yoshihiro Hirooka +2 more
doaj +1 more source
Phytometrical Studies of Crop Canopies : IV. Structure of canopy photosynthesis of rice plants
Japanese Journal of Crop Science, 1974 The data of the variation in radiation environment from leaf to leaf have been used in order to study the microstructure of canopy photosynthesis of rice plants. The gross photosynthesis Φ(i) of the whole leaf area of the layer i can be given by Φ(i)=ΣΔF(i)F(i, S)Φ(S), where ΔF is the partial leaf area of the layer i, F(i, S) the probability density ...
Taketoshi UDAGAWA +2 more
openaire +2 more sources