منابع مشابه
Rangeland zoning for sheep and goats common grazing in the Darmian Basin (South Khorasan Province)
Considering the poor condition of most rangelands of Iran, evaluation of rangeland potential and determination of suitability for continuous and optimal utilization seems necessary. The purpose of this study was to investigate the rangeland suitability for sheep and goat grazing using FAO and GIS methods. Therefore, three criteria including vegetation cover, water, and soil were studied. The ...
متن کاملThe impact of meteorological drought and grazing on the vegetation structure in aridlands (Case study: Nakhab Forest, Khosf County)
Drought and grazing rangelands play an important role in changing the structure of vegetation and losing the biodiversity of natural ecosystems. In this research, in order to determine the effects of drought and livestock grazing on the vegetation structure of rangelands located in the Nakhab Forest of South Khorasan Province, species abundance, biodiversity, and range condition and trend were ...
متن کاملMicrozooplankton grazing in the northern South China Sea
Seasonal and spatial comparisons of phytoplankton growth and mortality rates due to microzooplankton grazing in the northern South China Sea B. Chen, L. Zheng, B. Huang, S. Song, and H. Liu State Key Laboratory of Marine Environmental Science and Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystem, Xiamen University, Xiamen, Fujian, China Division of Life Science, Hong...
متن کاملForest Productivity and Timber Supply Modeling in the South
I ABSTRACT.-The South can increase forest productivity on industrial and nonindustrial private forest (NIPF) lands. As timber markets have improved and timber prices have increased, returns from intensive management are more profitable. The interaction of timber markets, inventory, and prices are analyzed in new southern timber supply models sponsored by the Southern Forest Resource Assessment ...
متن کاملReforestation Incentives on Family Forest Owners in the South
The American Jobs Creation Act of 2004 rewrote the reforestation tax incentives available to private forest owners. Owners can now deduct outright reforestation costs up to $10,000 per year for each qualified timber property and amortize any additional amount over 8 tax years. To assess the economic effect of the new incentives on forest owners, the authors developed spreadsheets to calculate a...
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ژورنال
عنوان ژورنال: Journal of Range Management
سال: 1978
ISSN: 0022-409X
DOI: 10.2307/3897592