نتایج جستجو برای: soil conservation technologies
تعداد نتایج: 475511 فیلتر نتایج به سال:
Soil quality is a concept based on the premise that management can deteriorate, stabilize, or improve soil ecosystem functions. It is hypothesized that the degree of stratification of soil organic C and N pools with soil depth, expressed as a ratio, could indicate soil quality or soil ecosystem functioning, because surface organic matter is essential to erosion control, water infiltration, and ...
A suitable instrument capable of inserting mulch into soil is needed to improve soil water holding capacity. The goal of this research is to design and manufacture an instrument with a blade and mechanism that can insert rice mulch into the soil. All the parameters in sub-soiling operation were taken into account, and the technique presented can be recommended as a special method of injecting r...
A thorough understanding of how conservation tillage in ̄uences water quality is predicated on knowledge of how tillage affects water movement. This paper summarizes the effects of conservation tillage on water movement and quality mainly based on long-term experiments on Luvisols at the North Appalachian Experimental Watershed near Coshocton, OH, USA. Conservation tillage can have a much larger...
خاک های مرتعی از دید اکولوژیکی دارای اهمیت فوق العاده ای می باشند. مراتع حدود نیمی از اراضی دنیا را پوشانده و وجود ارتفاعات زاگرس در استان چهار محال و بختیاری پوشش متنوعی از مراتع را به وجود آورده است که به دلیل ویژگی و موقعیت خاص جغرافیایی، شرایط آب و هوایی و همچنین تشکیلات زمین شناسی از اهمیتی حیاتی برخوردار می باشند. ماده ی مادری و پستی بلندی جزو فاکتورهای ذاتی کیفیت خاک محسوب می شوند ولی هن...
Despite their ambiguous historical record, conservation/development interventions the world over have remained a popular environmental governance tool. One of the latest global ‘trends’ are interventions to establish so-called ‘Transfrontier Conservation Areas’ (TFCAs): large contiguous spaces that are principally aimed at conserving biological diversity across national boundaries. In line with...
Nutrient resorption from senesced leaves as a nutrient conservation strategy is important for plants to adapt to nutrient deficiency, particularly in alpine and arid environment. However, the leaf nutrient resorption patterns of different functional plants across environmental gradient remain unclear. In this study, we conducted a transect survey of 12 communities to address foliar nitrogen (N)...
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