نتایج جستجو برای: climatic soil properties

تعداد نتایج: 1057367  

2017
Christopher L. Osburn Nicholas J. Anderson Colin A. Stedmon Madeline E. Giles Erika J. Whiteford Terry J. McGenity Alex J. Dumbrell Graham J. C. Underwood

Dissolved organic matter (DOM) concentration and quality were examined from Arctic lakes located in three clusters across south-west (SW) Greenland, covering the regional climatic gradient: cool, wet coastal zone; dry inland interior; and cool, dry ice-marginal areas. We hypothesized that differences in mean annual precipitation between sites would result in a reduced hydrological connectivity ...

2013
Amor V. M. Ines Binayak P. Mohanty Yongchul Shin

[1] We present an unmixing method, based on genetic algorithm-soil-vegetationatmosphere-transfer modeling to extract subgrid information of soil and vegetation from remotely sensed soil moisture (downscaled; e.g., soil hydraulic properties, area fractions of soil-vegetation combinations, and unmixed soil moisture time series) that most land surface models use. The unmixing method was evaluated ...

2016
Constanze Buhk Marcel Kämmer Carl Beierkuhnlein Anke Jentsch Jürgen Kreyling Hermann F. Jungkunst

Climate projections propose that drought stress will become challenging for establishing trees. The magnitude of stress is dependent on tree species, provenance, and most likely also highly influenced by soil quality. European Beech (Fagus sylvatica) is of major ecological and economical importance in Central European forests. The species has an especially wide physiological and ecological ampl...

Journal: :Ecology 2008
Willy Tinner Christian Bigler Sharon Gedye Irene Gregory-Eaves Richard T Jones Petra Kaltenrieder Urs Krähenbühl Feng Sheng Hu

Recent observations and model simulations have highlighted the sensitivity of the forest-tundra ecotone to climatic forcing. In contrast, paleoecological studies have not provided evidence of tree-line fluctuations in response to Holocene climatic changes in Alaska, suggesting that the forest-tundra boundary in certain areas may be relatively stable at multicentennial to millennial time scales....

2003
V W SPAULL

Data from a survey of nematodes associated with sugarcane conducted in South Africa in 1978 (Spaull, 1981) were re-examined in combination with associated soil, climatic and topographic data. The objective was to identify associations between the distribution of the nematodes and soil, climatic and topographic factors in sugarcane fields in KwaZulu-Natal. The procedures used in the survey are s...

Journal: :international journal of architectural engineering and urban planning 0
seyedeh zeinab emadian razavi yazd,emam st.,kooye sahlebne ali,art & architecture faculty mansoureh tahbaz tehran, evin, shahid beheshti university

this paper deals with evaluating the thermal behavior of exterior walls in dwellings of a particular place. today, there is a huge increase in constructing multi-storey apartment buildings and single-family houses in the city of yazd, a city with hot dry climate and a rich historical architecture in iran. unfortunately, the new methods that are used nowadays to make the envelopes of these dwell...

2015
M. K. Sundqvist J. A. Henning G. S. Newman J. A. M. Moore M. A. Cregger L. C. Moorhead AIMÉE T. CLASSEN MAJA K. SUNDQVIST JEREMIAH A. HENNING GREGORY S. NEWMAN JESSICA A. M. MOORE MELISSA A. CREGGER LEIGH C. MOORHEAD COURTNEY M. PATTERSON

Global change is altering species distributions and thus interactions among organisms. Organisms live in concert with thousands of other species, some beneficial, some pathogenic, some which have little to no effect in complex communities. Since natural communities are composed of organisms with very different life history traits and dispersal ability it is unlikely they will all respond to cli...

2000
T. R. Nisar Ahamed K. Gopal Rao

Crop-land suitability analysis is a prerequisite to achieve optimum utilisation of the available land resources for sustainable agricultural production. The Food and Agricultural Organisation [FAO, 1976. A framework for land evaluation (Soils Bulletin No. 32). FAO, Rome.] recommended an approach for land suitability evaluation for crops in terms of suitability ratings from highly suitable to no...

Journal: :Journal of environmental biology 2007
G Tripathi R Kumari B M Sharma

Soil animals are considered as important contributors to soil fertility However, there is paucity of such information for harsh climatic conditions. Therefore, the below ground faunal density and frequency have been studied in relation to physicochemical properties of soil in Thar desert. The selected soil systems were Vigna radiata--Cuminum cyminum, grassland, flower garden and Zizyphus maurit...

2017
Santiago José Elías Velazco Franklin Galvão Fabricio Villalobos Paulo De Marco Júnior

Ecological niche modeling (ENM) is a broadly used tool in different fields of plant ecology. Despite the importance of edaphic conditions in determining the niche of terrestrial plant species, edaphic data have rarely been included in ENMs of plant species perhaps because such data are not available for many regions. Recently, edaphic data has been made available at a global scale allowing its ...

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