نتایج جستجو برای: fallow lands
تعداد نتایج: 12953 فیلتر نتایج به سال:
The objective of this study was to compare organic carbon (C) accumulation in plantations (PL) and natural succession (NS) established on fallow lands along a 50-year chronosequence in the eastern mixed forest subzone of Quebec (Canada). Aboveand below-ground woody biomass were estimated from vegetation measurement surveys, and litter and soil (0–50 cm depth) C from samplings. At the year of ab...
Tropical secondary forests created by swidden-fallow agriculture cover extensive areas in the humid tropics and yield significant ecological and economic benefits, yet forest fallowing behaviour among swidden cultivators remains poorly understood. This paper reports on a study of forest fallow management among Amazonian peasant farmers in a traditional, riverside community near Iquitos, Peru. D...
The area under pulse production has decreased continuously for the last 10 years in Bangladesh. With the expansion of irrigation facilities, the area allocated to production of cereal crops has increased significantly, while pulses have been pushed to marginal lands of low productivity. Additional production of pulses can be achieved by (1) increasing productivity through improved varieties, (2...
Exceedance of the US Environmental Protection Agency national ambient air quality standard for PM10 (particulate matter ≤10 μm in aerodynamic diameter) within the Columbia Plateau region of the Pacific Northwest US is largely caused by wind erosion of agricultural lands managed in a winter wheat–summer fallow rotation. Land management practices, therefore, are sought that will reduce erosion an...
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