نتایج جستجو برای: orchards and fallow lands

تعداد نتایج: 16829604  

2013
Theresa M. Nogeire Frank W. Davis Jennifer M. Duggan Kevin R. Crooks Erin E. Boydston

Wide-ranging species cannot persist in reserves alone. Consequently, there is growing interest in the conservation value of agricultural lands that separate or buffer natural areas. The value of agricultural lands for wildlife habitat and connectivity varies as a function of the crop type and landscape context, and quantifying these differences will improve our ability to manage these lands mor...

Journal: :Revue de géographie alpine 2019

Journal: :محیط شناسی 0
مریم حسین خواه دانشکده منابع طبیعی دانشگاه ارومیه گروه آموزشی مرتع و آبخیزداری مهدی عرفانیان عضو هیات علمی رسمی دانشکده منابع طبیعی دانشگاه ارومیه گروه آموزشی مرتع و آبخیزداری احمد علیجانپور دانشکده منابع طبیعی دانشگاه ارومیه گروه آموزشی جنگلداری

extended abstractintroductionin recent years, several studies around the world have shown that land use has a strong impact on water quality, and significant correlations exist between water quality parameters and land use types. generally land use types have adverse impacts on water quality, so positive relationships exist between percentages of these land use types and concentrations of water ...

The development of hazelnut orchards in sloping lands by changing the cultivation pattern and establishing permanent vegetation is of special importance. Considering the potential of lands in the Eshkorat region of Rudsar city and hazelnut adaptation in this region, the use of rainwater catchment systems can play an important role in maintaining the genetic diversity of this product and prevent...

Journal: :Revue de géographie alpine 2019

2013
Sylvie Tremblay

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...

2017
Megan J Colwell Geoffrey R Williams Rodger C Evans Dave Shutler

European honey bees Apis mellifera are important commercial pollinators that have suffered greater than normal overwintering losses since 2007 in North America and Europe. Contributing factors likely include a combination of parasites, pesticides, and poor nutrition. We examined diet diversity, diet nutritional quality, and pesticides in honey bee-collected pollen from commercial colonies in th...

1999
Oliver T. Coomes Franque Grimard Graeme J. Burt

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...

Journal: :پژوهش های حبوبات ایران 0
احمد نظامی عبدالرضا باقری مرتضی عظیم زاده علی اکبر محمودی علی بزرگمهر

long term use of fallow in wheat-based cropping system of dry and semi-dry lands can increase erosion and decrease soil fertility. legumes as substituting crops for fallow could improve sustainability in this area. this study was conducted to evaluate the substituting of some legumes for fallow in a 2-yr wheat rotation at research stations in north khorasan province (natural resources research ...

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