نتایج جستجو برای: climate condition

تعداد نتایج: 481523  

Climate is the most important factor of plants distribution in global and regional scale. Understanding the current distribution of vegetation cover and its interaction with climate regularity is important for predicting its future. In order to determine the effective climate factors in plant life-form in Polour rangelands in the Damavand summit (2400 to 4100 m above sea level), Iran, a study w...

2015
Carmen Dayrell John Urry

This article examines the centrality of Brazil within the future of climate policy and politics. The state of the carbon sink of the Amazon rainforest has long been an iconic marker of the condition of the Earth. Brazil has been innovative in developing many noncarbon forms of energy generation and use and it has played a major role in international debates on global warming since the Rio Earth...

Journal: :international journal of advanced biological and biomedical research 2014
reza kakvan kourosh mojaveri smak behnam ghnmy shaghayegh delfanazari

from 60 decade  sustainability issues  and sustainable developing  have opened a way in scientific meetings associated with  environment and urbanization and architecture. sustainability goals are improving of environment situation , less pollution  and at least interference on  land and interaction of  natural and artificial environment , that most of these cases attracted attention in archite...

2018
Paulos Asrat Belay Simane

Introduction: This study is aimed at analyzing farmers’ perception and adaptation to climate change in the Dabus watershed. It is based on analysis of data collected from 734 randomly selected farm householdheads substantiated with Focus Group Discussions and field observations. Methods: The study employed descriptive methods to assess farmers’ perception of climate change, localindicators of c...

Journal: :محیط زیست طبیعی 0
سجاد آستانی باشگاه پژوهشگران جوان و نخبگان دانشگاه آزاد اسلامی واحد همدان سهیل سبحان اردکانی استادیار گروه محیط زیست، دانشگاه آزاد اسلامی واحد همدان

in recent years multiple roles of wetland ecosystem and their values for human have increasingly been known, but their environmental and human life importance are usually considered to be less than their actual value. wetlands are one of the most important critical areas in the world. due to unique biodiversity and having high volume production, wetlands have special place from controlling role...

2011
Zhenhua Luo Songhua Tang Chunwang Li Jing Chen Hongxia Fang Zhigang Jiang

BACKGROUND Explaining species range size pattern is a central issue in biogeography and macroecology. Although several hypotheses have been proposed, the causes and processes underlying range size patterns are still not clearly understood. In this study, we documented the latitudinal mean range size patterns of terrestrial mammals in China, and evaluated whether that pattern conformed to the pr...

Journal: :پژوهش های جغرافیای طبیعی 0
علی نصیری استادیار گروه علمی دانشگاه پیام نور، تهران، ایران

introductionin the modern era of communication, by increasing population the resources would be relativelyscarce. therefore, in order to deal with environmental serious problems and complex humanclimaterelationship in all dimensions of spatiotemporal and land use planning and programmingpractices, the climatic zone map was a sustainable developmental tool in the study area.methodologythe climat...

Behnam Ghnmy Kourosh Mojaveri Smak Reza Kakvan Shaghayegh DelfanAzari

From 60 decade  sustainability issues  and sustainable developing  have opened a way in scientific meetings associated with  environment and urbanization and architecture. Sustainability goals are improving of environment situation , less pollution  and at least interference on  land and interaction of  natural and artificial environment , that most of these cases attracted attention in archite...

Journal: :Remote Sensing 2016
Wenzhe Jiao Lifu Zhang Qing Chang Dongjie Fu Yi Cen Qingxi Tong

Drought is a complex hazard, and it has an impact on agricultural, ecological, and socio-economic systems. The vegetation condition index (VCI), which is derived from remote-sensing data, has been widely used for drought monitoring. However, VCI based on the normalized difference vegetation index (NDVI) does not perform well in certain circumstances. In this study, we examined the utility of th...

2004
Meixue Yang Shaoling Wang Tandong Yao Xiaohua Gou Anxin Lu Xuejun Guo

Desertification in Qinghai-Xizang (Tibet) Plateau is part of Chinese desertification. In the past decades, due to the climate warming, the climate condition in Qinghai-Xizang (Tibet) Plateau has been relatively dry. This has resulted in permafrost degradation and other environmental problems. In addition, the vegetation and the soil layer were also destroyed by unreasonable economic activities....

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