|
Titre :
|
Land evaluation in a salt-affected irrigated district using an index of productive potential
|
|
Auteurs :
|
J. Nogues ;
J. Herrero ;
R. Rodriguez-ochoa ;
J. Boixadera
|
|
Type de document :
|
article/chapitre/communication
|
|
Année de publication :
|
2000
|
|
Format :
|
p. 143-152
|
|
Langues :
|
= Anglais
|
|
Catégories :
|
AGRICULTURE, AGRONOMIE ET ELEVAGE
|
|
Mots-clés :
|
ESPAGNE
;
IRRIGATION
;
SALINITE DU SOL
;
ZONE SEMI ARIDE
;
CARTOGRAPHIE
;
PRODUCTIVITE
;
CEREALE
|
|
Résumé :
|
The indiscriminate allocation of funds supporting agricultural policies can lead to land misuse, with undesirable effects either on the shorter to mid-term productivity or on the environment. This article proposes a methodology, based on land rating, that can be useful to land-use planning or to decide about environmental protection measures. The methodology is applied to the land evaluation of a 260-km(2) semiarid irrigated area with salt-affected soils. The available soil map is at 1:100,000 scale and its mapping units are used for the land evaluation with the FAO framework. These data are then elaborated using the index value method. This procedure gives a map of land evaluation units and a table that rates the productive potential of these units for six crops: alfalfa, barley, maize, rice, sunflower, and wheat.
|
|
Source :
|
Environmental Management, vol.25, n°2
|
