نتایج جستجو برای: dry regions

تعداد نتایج: 440224  

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2013
Friederike E L Otto Richard G Jones Kate Halladay Myles R Allen

Tropical rainforests in Africa are one of the most under-researched regions in the world, but research in the Amazonian rainforest suggests potential vulnerability to climate change. Using the large ensemble of Atmosphere-only general circulation model (AGCM) simulations within the weather@home project, statistics of precipitation in the dry season of the Congo Basin rainforest are analysed. By...

2017
Zhiping Fan Zhihua Tu Fayun Li Yanbin Qin Dongzhou Deng Dehui Zeng Xuekai Sun Qiong Zhao Yalin Hu

Expected changes in precipitation over large regions of the world under global climate change will have profound effects on terrestrial ecosystems in arid and semiarid regions. To explore how changes in the amount of precipitation in the growing season would affect soil nitrogen (N) availability in a semiarid ecosystem, we established rainout shelters and irrigation systems by simulating 30% re...

Journal: :Journal of occupational health 2010
Betina Holbaek Pedersen Harald Hannerz Finn Tüchsen Kim Lyngby Mikkelsen Johnny Dyreborg

OBJECTIVES To estimate proportions of injuries that are attributable to the work environment (excess fractions) among economically active men and to identify industries associated with an elevated injury risk. METHODS A follow-up study was conducted among all economically active men in Denmark aged 20-59 yr 1 January 1999 (N=1,315,772) for first hospital contacts in the period 1999-2003 due t...

2008
Yan Zhao Zicheng Yu Fahu Chen

Pollen data from 30 sites in arid and semi-arid regions of China were reviewed to document regional patterns of Holocene vegetation and climate change and to understand the large-scale controls on these changes. Vegetation at most sites in eastern Inner Mongolia switched between forest, forest steppe, and typical steppe, showing maximum moisture conditions before 6 ka (1 ka 1⁄4 1000 cal yr BP) ...

2016
Martyna Saba Jerzy Falandysz Innocent C. Nnorom

Presented in this paper is result of the study of the bioconcentration potential of mercury (Hg) by Suillus luteus mushroom collected from regions within Central, Eastern, and Northern regions of Europe. As determined by cold-vapor atomic absorption spectroscopy, the Hg content varied from 0.13 ± 0.05 to 0.33 ± 0.13 mg kg(-1) dry matter for caps and from 0.038 ± 0.014 to 0.095 ± 0.038 mg kg(-1)...

Journal: :Journal of animal science 2007
J L Salak-Johnson S R Niekamp S L Rodriguez-Zas M Ellis S E Curtis

Different floor space allowances for dry, pregnant sows in pens were evaluated to determine the impacts of space on sow performance, productivity, and body lesions during 2 consecutive farrowings. Treatment groups of 5 sows/pen were assigned to 1.4, 2.3, or 3.3 m(2) of floor space/sow or of 5 sows in individual stalls (1.34 m(2)). The experiment consisted of 6 replications (blocks 1 to 6), and ...

Hadi Eslami, Hamid Reza Azimzadeh, Mahmoud Taghavi, Mohammad Taghi Ghaneian, Reza Ali Fallahzadeh, Seyed Ali Almodaresi,

 Background: The phenomenon of dust is a serious environmental problem in dry and semi dry regions. It has a destructive effect for the residents of such regions. Over two-thirds of Iran is in areas of dry and semi-dry climate conditions. Methods: In this research, dust fall measurements were taken in 41 stations across Yazd city using a marble dust collector (MDCO) located in diffe...

2017
Owen F. Price Jeremy Russell-Smith Felicity Watt

Fire regimes in many north Australian savanna regions are today characterised by frequent wildfires occurring in the latter part of the 7-month dry season. A fire management program instigated from 2005 over 24 000 km2 of biodiversity-rich Western Arnhem Land aims to reduce the area and severity of late dry-season fires, and associated greenhouse gas emissions, through targeted early dry-season...

Journal: :Geophysical Research Letters 2021

Extreme heat research has largely focused on dry-heat, while humid-heat that poses a substantial threat to human-health remains relatively understudied. Using hourly high-resolution ERA5 reanalysis and HadISD station data, we provide the first spatially comprehensive, global-scale characterization of magnitude, seasonal timing, frequency dry- wet-bulb temperature extremes their trends. While pe...

Journal: :Remote Sensing 2015
Zhigang Sun Qinxue Wang Qingan Xiao Ochirbat Batkhishig Masataka Watanabe

Frozen ground may regulate the phenological shifts of dry and cold grasslands at the southern edge of the Eurasian cryosphere. In this study, an investigation based on the MODIS Collection 5 phenology product and climatic data collected from 2001 to 2009 reveals the diverse responses of grassland phenology to interannual climate variability over various frozen ground regions in Mongolia. Compar...

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