نتایج جستجو برای: arid zones
تعداد نتایج: 63858 فیلتر نتایج به سال:
Livestock production by transhumance rearing systems is the major land use and a source of livelihood in most areas of the arid, semiarid, and arid temperate agro-ecological zones of Asia. It is perhaps the best way of exploiting these pastures economically. Lack of feed is the major constraint to improving livestock production during winter and early spring, as the temperatures are extremely l...
On the global scale, extensive pastoral production accounts for 10% of total meat production (or a billion head of camels, cattle and small animals on all continents)1 and supports some 200 million pastoral households. Yet, despite the considerable benefits conferred by pastoral production systems, they are often denigrated as being archaic. [R1] On the African continent, despite these subjecti...
The article is devoted to the study of ways achieve sustainable development landscaping and microclimate in architecture multi-storey residential complexes arid zones on example city Nukus. Their town-planning, space-planning functional solutions are considered.
High spatiotemporal resolution climate data are essential for climate-related impact studies. The Weather Research and Forecasting (WRF) model is widely used to downscale different regions with regional-specific physics configurations. This study aimed identify robust configurations of the WRF model, especially cumulus parameterization schemes, climatic zones Sudan. We focused on wet season (Ju...
The large-scale reuse of untreated domestic sewage for irrigation is commonplace in many arid and semiarid zones of Latin America, as a result of increasing population pressures, water shortages, and protein shortfalls. Twenty per cent of the land is arid or semiarid, having only 5% of the water resources of the Region; but this land supports 60% of the population (367 million people in 1983-I)...
Kenyan farmers’ livelihoods are closely linked to climate conditions. Almost three-quarters of the labor force depend on agriculture for their livelihoods, and almost all farmers depend on timely and adequate rainfall for crop production and husbandry, as only 2 percent of cultivated area is equipped for irrigation. Thus, climate variability and change will have an increasing impact on agricult...
The spatial pattern in Senegal of Crimean-Congo hemorrhagic fever (CCHF) virus IgG antibody prevalence in human and sheep was determined as was the relative abundance of potential tick vectors. A systematic, country-wide serological survey of sheep demonstrated that 10.4% of sheep exhibited IgG to CCHF virus. Sexes were infected equally. Antibody prevalence increased with age from 2.1% during t...
A substantial reservoir (up to 1 kg ha(-1)) of natural perchlorate is present in diverse unsaturated zones of the arid and semi-arid southwestern United States. The perchlorate co-occurs with meteoric chloride that has accumulated in these soils throughout the Holocene [0 to 10-15 ka (thousand years ago)] and possibly longer periods. Previously, natural perchlorate widely believed to be limited...
The dromedary camel is a multipurpose animal adapted to the harsh environments of semiarid and arid zones, essentially kept for milk and meat production and transportation. It is also a financial reserve (asset) and security (drought-prone risk management) for pastoralists and plays an important role in social prestige and wealth (8, 19). Because of the increasing desertification and recurrence...
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