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Showing items 1 through 9 of 9514.
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Library Resource
This study, which looked at 72 in traditional Salers system, shows there is a correlation between the use made of fields and the characteristics of these fields. The geographical characteristics and the use made of over 1,500 fields (cut and/or grazed fields) were described, mainly based on the statements made by farmers. Three groups of fields were identified (only cut fields, cut and grazed fields, only grazed fields) and in a second step, 15 types of fields uses were identified and described.
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Library Resource
Documents de politique et mémoires
Nowadays , demographic pressure on water and land resources is progressively increasing and their sustainability features have increasingly been under threat so these resources are required to using effectively. Large part of food requirements meet from irrigable area.
Günümüzde arazi ve su kaynaklarına olan demografik baskının artması ve su kaynaklarının sürdürebilir olma niteliklerinin gün geçtikçe tehlikeye girmesi, su kaynakların etkin kullanımı ihtiyacını arttırmaktadır. Gıda ihtiyacının büyük bir kısmı sulanabilir alanlardan sağlanmaktadır.
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Library Resource
Documents de politique et mémoires
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Library Resource
The nutrients elements N, P, K, Ca, and Mg were quantified in a semi-deciduos mountain forest, and in eucalyptus (Eucalyptus saligna) and “bracatinga” (Mimosa scaabrella) plantations in areas degraded by mining, close to Poços de Caldas- MG (21º47’13” S - 46º34’10” W).In the eucalyptus annual litterfall was 7,100 kg.ha-1 with 202.4 kg.ha-1 of N, 4.4 kg.ha-1 of P, 46.2 kg.ha-1 of K, 440.2 kg.ha-1 of Ca and 54.0 kg.ha-1 of Mg.
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Library Resource
The purpose of this study is to discover the changes of household employment structure and of business range for those graziers who have to turn to rear sheep in pens as the background of the policy of returning farmland into forest and grassland. The results of this study are as follows: First, after turning to rear sheep in pens, though the graziers have saved time for other work, the time for feeding has increased to the whole year. In addition, the policy that encourages the rearing of sheep in pens has brought about a growing number of sheep graziers.
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Library Resource
The purpose of this study is to show the administrative institutions and acts for the unused farmlands in hilly and mountainous areas. The Nagano City Agricultural Commitee surveyed the farmland used in 2013, and produced a survey in collaboration with the members of their committee as well as other farmers. In this survey, it was shown that almost all the unused farmlands were kept as forests and thus, couldn't be cultivated. Before the 1970s, silk was produced in Nagano City, and so almost all the unused farmlands were used for mulberry production which supported the silk industry.
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Library Resource
Poplars and willows provide society with ecosystem services. These include direct economic benefits such as wood, fibre, fuelwood and other forest products. They also include environmental benefits improving the lives of people, such as through rehabilitation of degraded land, restoration of forest landscapes and mitigation of climate change. All of these services support rural livelihoods, enhance food security, alleviate poverty and contribute to sustainable land use and rural development, particularly in developing countries.
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Library Resource
Based on the climatic data and other statistics of climatic data of 54 meteorological stations from 1956 to 2005 in Liangning Province, the annual and seasonal light, heat and water and the like major elements of climatic resources are diagnosed and analyzed by using the method of linear climate trend rate. The results show that warming trend is 0.25℃/10a , the precipitation decrease gradually by 2.2mm/a and the decreasing trend of solar radiation and hours of sunshine is not dramatic.
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Library Resource
Documents et rapports de conférence
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