نتایج جستجو برای: rangeland and forest
تعداد نتایج: 16850726 فیلتر نتایج به سال:
The aim of this study was to evaluate the impact of forest on erosion and runoff variables and compare it with rangeland and agricultural in part of Mereg watershed located in Kermanshah province. At first, three forest mass were identified and divided into three density categories (low, medium and Many), then Soil and hydrological parameters were measured in each forest density area and also i...
the purpose of this study was identifying rangeland development andrestoration operations targets. this study was conducted in hossein abad bazoft basinwith 7162 ha area, located in south east of farsan county, chaharmahal and bakhtiariprovince, iran. the basin has various land uses including rangeland, forest, irrigated farmand garden, dry farm, residential area and rock mass. in this study, d...
Estimating the extent of changes in forest and rangelands land cover, leads to a clear understanding of the growth or decline of these natural areas and planning for effective protection of these national assets. The aim of current study was to reveal the trend of land-use changes in the Dizmar protected area of Arasbaran vegetative area, using MSS sensor of Landsat-5 for 1984, ETM+ sensor of L...
To investigate the degree of forest degradation and the effect of land use change on selected soil quality attributes in loess-derived landforms, samples were taken from different land uses including forest, rangeland, degradated rangeland and farmland in Pasang watershed located in the Galikesh area of Golestan province (37°16'N, 55°30'E). The annual average temperature and mean precipitation ...
To investigate the degree of forest degradation and the effect of land use change on selected soil quality attributes in loess-derived landforms, samples were taken from different land uses including forest, rangeland, degradated rangeland and farmland in Pasang watershed located in the Galikesh area of Golestan province (37°16'N, 55°30'E). The annual average temperature and mean precipitation ...
The Water Erosion Prediction Project (WEPP) is a physically based erosion model for applications to dryland and irrigated agriculture, rangeland, and forests. U.S. Forest Service (USFS) experience showed that WEPP was not being adapted because of the difficulty in building files describing the input conditions in the existing interfaces. To address this difficulty, a suite of Internet interface...
Kachergis, E. (corresponding author, emily. [email protected]): Rangeland Resources Research Unit, USDA-Agricultural Research Service, 8408 Hildreth Road, Cheyenne, WY, 82009, USA Rocca,M.E. ([email protected]): Department of Ecosystem Science and Sustainability, Colorado State University, Fort Collins, CO, 80523, USA Fernandez-Gimenez,M.E. ([email protected]): De...
a Rocky Mountain Research Station, United States Forest Service, Moscow, ID, United States b Forest, Rangeland, and Fire Sciences, University of Idaho, Moscow, ID, United States c McCall Outdoor Science School, University of Idaho, McCall, ID, United States d Forest and Wildlife Ecology, University of Wisconsin, Madison, WI, United States e School of Forest Resources and Environmental Science, ...
Soil flora and fauna play an important role in nutrient cycle and ecosystem sustainability. With the aim of investigating the changes in the activity of these soil organisms as a result of the change of vegetation from forest to rangeland in the mountainous regions of the north of the country, the present study was considered. For this purpose, in the Kinj region of Nowshahr, a forest habitat d...
the runoff generation and soil erosion in the kechik watershed, golestan province, was assessed, using a designed and constructed portable rainfall simulator. treatments were applied on different land-uses, slopes and aspects as the most influential factors. results showed that land-use significantly affected runoff generation (13.35 l, 6.9 l, and 4.12 l, respectively for agriculture, forest an...
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