نتایج جستجو برای: arid rangelands

تعداد نتایج: 20677  

2016
Hua Liu Runguo Zang Han Y. H. Chen

Rangelands play a critical role in the global carbon cycle. However, the eco-physiological mechanisms associated with the effects of grazing on leaf photosynthesis and soil respiration remain poorly understood. To examine the impacts of grazing on leaf photosynthesis and soil respiration, we measured the photosynthetic parameters of the dominant species (Trifolium repens) and the soil respirati...

2011
K. J. Wessels R. Mathieu

People in the rural, communal areas of South Africa rely on live fuel wood for more than 90% of their energy requirements. Using airborne lidar from the Carnegie Airborne Observatory (CAO) we compared tree canopy cover and height distributions between communal landscapes with heavy utilization to fully protected public and private reserves in the Lowveld of South Africa. Rangelands and fields i...

2006
E. Durant

_______________________________________ The 11 papers in this document address issues and needs in the development and stewardship of Central Asia rangelands, and identify directions for future work. With its vast rangelands and numerous pastoral populations, Central Asia is a region of increasing importance to rangeland scientists, managers, and pastoral development specialists. Five of the pa...

2016
Aaron M Foley David G Hewitt Charles A DeYoung Randy W DeYoung Matthew J Schnupp

White-tailed deer are a culturally and economically important game species in North America, especially in South Texas. The recent discovery of chronic wasting disease (CWD) in captive deer facilities in Texas has increased concern about the potential emergence of CWD in free-ranging deer. The concern is exacerbated because much of the South Texas region is a semi-arid environment with variable...

ژورنال: آبخیزداری ایران 2019
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Gully erosion is one of the important forms of soil degradation especially in semi-arid areas. Gullies are occupying 13 percent of Ilam Province area. This research focused on studying the, topographic threshold of gullies, dominant process of gully initiation and development as well, in agricultural and rangeland land uses. Ilam province with 2 million hac area is located in western Iran. Ilam...

Journal: :Frontiers in Ecology and the Environment 2022

Utility-scale solar energy (USSE) has become an efficient and cost-effective form of renewable energy, with expanding footprint into rangelands that provide important habitat for many wild ungulate populations. Using global positioning system data collected before after construction, we documented the potential impacts USSE on pronghorn (Antilocapra americana), including direct loss, indirect b...

Journal: :Climatic Change 2021

The management of rangelands, including climate change adaptation strategies, is primarily responsible for stimulating livestock productivity, which consequently improves food security. This paper investigates the impact adaptations on security among pastoralists in semi-arid parts Kenya, who have not received due attention to date. Using an endogenous switching regression model, current study ...

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