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Displaying 1496 - 1500 of 1605Factors determining soil nutrient distribution in a small-scaled watershed in the purple soil region of Sichuan Province, China
Determining soil nutrient distribution is critical to identify sites which are at risk of N and P loading. Equally important are determining factors that influence such distribution (e.g. land use, land management, topography, etc.). In this research, soil nutrient distribution and its influencing factors were studied in a small-scaled watershed in the purple soil region of Sichuan Province, China. The watershed is 1.3km² with a complex land management system including agriculture and forestry.
Profitable Swedish lamb production by economies of scale
Economic sustainability assumes profitability (revenues>=costs including annual cash expenses as well as family labor and investments). Calculations suggest that sheep flocks of more than 500 ewes can be profitable under Swedish conditions whereas smaller flocks are unprofitable unless they are managed by cheap existing resources including buildings, fences, machinery and family labor with low or no opportunity costs. Despite these economies of scale less than 1% of the Swedish sheep flocks have 500 or more ewes.
Long-term functioning of a species-rich mountain meadow under different management regimes
The aim of this study is to assess the effect of different management practices on mountain meadow plant biomass, species richness and diversity. The experiment was carried out in the Bohemian Forest Mts. at the altitude of 1150-1170m for 10 years. We applied three treatments (mowing, mulching - i.e., cutting and crushing of the sward into small pieces which are left at the site to decompose, abandonment - fallow) to a mountain meadow with dominant Deschampsia cespitosa, Agrostis capillaris, Festuca rubra and Hypericum maculatum.
Automatic greenhouse delineation from QuickBird and Ikonos satellite images
The area of production under greenhouses has been in rapid growth in recent years, and at present there are over 500,000ha scattered all over the world. Due to the vast amount of inputs (water, fertilizers, fuel, etc.) required, and outputs of various agricultural residues (vegetable waste, plastic sheeting, phytosanitary product containers, etc.), the impact of this type of production system to the environment is considerable in particular if pursued without a sound and sustainable territorial planning.
Antecedents to forest owner innovativeness: An investigation of the non-timber forest products and services sector
Increased urbanization in many societies is having a negative impact on vitality of rural areas. To maintain the vitality of these areas governments have employed a variety of policies, some of which are designed to facilitate innovation and enhance landowner innovativeness. However, little research has investigated the antecedents to landowner innovativeness and whether innovativeness positively impacts economic performance in this setting.