نتایج جستجو برای: due to climate changes

تعداد نتایج: 10819836  

2016
Elizabeth S. Garcia Abigail L. S. Swann Juan C. Villegas David D. Breshears Darin J. Law Scott R. Saleska Scott C. Stark

Forest loss in hotspots around the world impacts not only local climate where loss occurs, but also influences climate and vegetation in remote parts of the globe through ecoclimate teleconnections. The magnitude and mechanism of remote impacts likely depends on the location and distribution of forest loss hotspots, but the nature of these dependencies has not been investigated. We use global c...

D. Sun, K.E. Banson L. Liu L. Wang X. Xu

Maize is one of the major crops in China and its yield potential has been changedsignificantly by climate change induction during last five decades. The national policy of maizeproduction sufficiency emphasizes the necessity for a more accurate estimation of yieldpotential of maize at a national level. In this paper yield potential of maize was calculated usingthe Global Agro-Ecological Zones (...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده ادبیات و علوم انسانی 1391

abstract: one of the most visited & important spaces in different countries by tourist are urban areas. the old tehran which major part is located in district 12 is historical showcase of the capital, but, its hiidden cultural attraction is not used as it should be. this thesis occasionally engage in studying the efficacy of correct installation of travel guide boards in welfare & easily acc...

2015
Arvid Bring Peter Rogberg Georgia Destouni

Changes to runoff due to climate change may influence management of nutrient loading to the sea. Assuming unchanged river nutrient concentrations, we evaluate the effects of changing runoff on commitments to nutrient reductions under the Baltic Sea Action Plan. For several countries, climate projections point to large variability in load changes in relation to reduction targets. These changes e...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1997
R S Lindzen

The realistic physical functioning of the greenhouse effect is reviewed, and the role of dynamic transport and water vapor is identified. Model errors and uncertainties are quantitatively compared with the forcing due to doubling CO2, and they are shown to be too large for reliable model evaluations of climate sensitivities. The possibility of directly measuring climate sensitivity is reviewed....

Journal: :آب و خاک 0
مجید سلیمانی ننادگانی مسعود پارسی نژاد شهاب عراقی نژاد علیرضا مساح بوانی

abstract in this study, impact of climate change on net irrigation requirement (in) and yield of wheat using cgcm3 climate projection model, one of the aogcm models, in behshahr area is evaluated. changes in temperature and precipitation were simulated run under the ipcc scenario a2 for 2011-2040, 2041-2070 and 2071-2100 periods. this work was done by using statistical and proportional downscal...

پایان نامه :0 1374

the following null hypothesis was proposed: h : there is no significant difference between the use of semantically or communicatively translates scientific texts. to test the null hypothesis, a number of procedures were taken first, two passages were selected form soyrcebooks of food and nutrition industry and gardening deciplines. each, in turn, was following by a number of comprehension quest...

Journal: :Journal of Agricultural Meteorology 1991

Journal: :Journal of Geophysical Research: Atmospheres 1999

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