Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 9514.
  1. Library Resource
    Articles et Livres
    décembre, 2013
    Fédération de Russie

    The farming system at landscapes preserving and restoring soil fertility of agricultural lands have been developed. Typification of lands was made and the types of agricultural landscapes were allocated: plain, hollow-gully, and gully-field. The analysis of the current structure of arable areas was made and resulted in the assessment of structure's influence on the state of soil fertility. The main degradation processes reducing the fertility of south chernozems were studied. There were proposed the ways of creating the sustainable artificial agricultural landscapes.

  2. Library Resource
    Documents et rapports de conférence
    décembre, 2015

    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.

  3. Library Resource
    Articles et Livres
    décembre, 2012

    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.

  4. Library Resource
    Documents de politique et mémoires
    décembre, 2012

    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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