نتایج جستجو برای: grazing reserve and climate change

تعداد نتایج: 16913274  

Journal: :Ecological applications : a publication of the Ecological Society of America 2016
J Gonzalo N Irisarri Justin D Derner Lauren M Porensky David J Augustine Justin L Reeves Kevin E Mueller

Grazing intensity elicits changes in the composition of plant functional groups in both shortgrass steppe (SGS) and northern mixed-grass prairie (NMP) in North America. How these grazing intensity-induced changes control aboveground net primary production (ANPP) responses to precipitation remains a central open question, especially in light of predicted climate changes. Here, we evaluated effec...

Journal: :Mitigation and Adaptation Strategies for Global Change 2017

Background and Purpose: Climate change has major impact on water cycle, resulting in effects on water resources, the frequency and severity of droughts, floods due to severe rainfall, natural environments, society, and economics and human health.  In this paper, surveys on different models of climate change as well as the effects of climate change on the burden of waterborne diseases and also, ...

Journal: :توسعه کارآفرینی 0
محمد رضا اکبری دانشجوی دکتری کشاورزی دانشگاه تهران احمد رضوانفر استاد گروه ترویج و آموزش کشاورزی، دانشکده اقتصاد و توسعه کشاورزی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران امیر علم بیگی استادیار گروه ترویج و آموزش کشاورزی، دانشکده اقتصاد و توسعه کشاورزی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران

the agricultural sector was affected by climate change more than every other sectors, because it is close to nature. in other words, the effects of climate change were been on the farmers’ livelihood. farmers need to entrepreneurial changes for adaptation to climate change in their livelihood. hence, investigation of farmers’ entrepreneurial behavior in response to climate change was the main p...

2010
Ronald F. Follett Debbie A. Reed

This forum manuscript examines the importance of grazing lands for sequestering soil organic carbon (SOC), providing societal benefits, and potential influences on them of emerging policies and legislation. Global estimates are that grazing lands occupy ,3.6 billion ha and account for about one-fourth of potential carbon (C) sequestration in world soils. They remove the equivalent of ,20% of th...

Journal: :آب و خاک 0
علیرضا کمال علیرضا مساح بوانی

abstarct development of greenhouse gases in future periods not only causes change in average amounts of climate variables but also makes variables of this variability affected. then for sure concerning alternations followed with climate variables’ fluctuations and its average amounts in effecting on runoff would make more reliable results. in this inquiry initially fluctuations and average amou...

Journal: :Ecology 2007
Camille McNeely Mary E Power

Ecologists seek better understanding of why species interactions change across space and time in natural communities. In streams, species effects on resources and community structure may change as physical characteristics of the stream environment change along drainage networks. We examined spatial and seasonal effects of armored grazers using a small-scale exclusion experiment that was replica...

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