Résultats de la recherche
Showing items 1 through 9 of 9514.
-
Library Resource
Documents et rapports de conférence
Abandonment of the agricultural land is a common, topical problem in many post-soviet countries, including Latvia. These changes impact nutrient cycling, soil properties. The results of the study of abandoned agricultural lands in the hemiboreal zone in Latvia validated the theory that after afforestation, in long term, soil accumulates organic carbon (Corg). During the first 30 years of abandonment, Corg content in mineral topsoil does not present a significant increase; it varies from 42 to 43 t haE-1.
-
Library Resource
Documents et rapports de conférence
-
Library Resource
Documents et rapports de conférence
-
Library Resource
Documents et rapports de conférence
-
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.
-
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.
-
Library Resource
Documents de politique et mémoires
-
Library Resource
In recent years, wild boars (Sus scrofa) have caused growing damage to farm crops in a hilly and mountainous area of the Tohoku region. In particular, in designated evacuation zones following the accident at the Fukushima Dai-ichi nuclear power plant, there are growing concerns about the expanding range of wild boars and the resulting degradation of farmland.
-
Library Resource
Documents et rapports de conférence
-
Library Resource
Rechercher dans la bibliothèque foncière
Grâce à notre moteur de recherche robuste, vous pouvez rechercher n'importe quel document parmi les plus de 64 800 ressources hautement conservées dans la bibliothèque du foncier.
Si vous souhaitez avoir un aperçu de ce qui est possible, n'hésitez pas à consulter le guide de recherche.
