Mots-clés
Agriculture Chine Ecologie Erosion des sols Etude comparée Gansu Loess Lutte contre l'érosion Ningxia Plateau Ravinement Shaanxi Shanxi Technique agricole Utilisation agricole du sol Agricultural land use Agricultural technique Agriculture China Comparative study Ecology Erosion control Gansu Gully erosion Loess Ningxia Plateau Shaanxi Shanxi Soil erosionA comparison between different ecological de-farming modes in the loess hilly-gully region in China
Auteurs :XU YONG,
GUO TENGYUN,
YANG GUOAN,
Description :
Taking the loess hilly-gully region as a case study, this paper summarizes the basic characteristics of relieving and de-farming (RD) and rebuilding terrace and de-farming (RTD) modes, calculates the sizes of de-farming slope farmland, rebuilt terraces, enlarged garden plots and restored vegetation, and compares the differences of two modes of de-farming area, ecological reestablishment index, investment demand amount and benefits. The results show that RTD mode has many advantages, including suitable investment, sufficient grain supply and great benefits, and will be the best ecological reestablishment mode in the loess hilly-gully region. RD mode which is being carried out in this region should be replaced by RTD mode as soon as possible.
Type de document :
Article de périodique
Source :
Journal of geographical sciences. Acta geographica sinica, issn : 1009-637X, 2005, vol. 15, n°. 1, p. 53-60, nombre de pages : 8, Collation : Illustration, Références bibliographiques : 16 ref.
Date :
2005
Editeur :
Pays édition : Chine
Langue :
Anglais
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)