Conversion of climax Dipterocarp forest for agricultural purposes has resulted in a decline in productivity of light textured soils in Northeast Thailand. To quantify the degree of chemical degradation that these soils have undergone, a survey was undertaken of six paired sites where adjacent Dipterocarp forest soils were compared to continuously cropped systems that had been under production from 37-100 years. Surface charge fingerprints along with soil chemical and physical attributes were determined on selective depth intervals.
Résultats de la recherche
Showing items 1 through 9 of 3.-
Library ResourceDocuments de politique et mémoiresseptembre, 2004Thaïlande
-
Library ResourceDocuments de politique et mémoiresoctobre, 2004Ouganda
This study investigates the impacts of rural poverty on farmers' land managementdecisions, crop production and incomes, based upon analysis of data from the 1999/2000Uganda National Household Survey.
-
Library Resourceseptembre, 2004
The paper deals with an application of the least squares method (LSM) for the purposes of division and evaluation of land. This method can be used in all cases with redundant number of measurements. The traditional procedure of calculus of variations with the use of Lagrangian function is shown. If some additional conditions are included in the calculation, it is possible to evaluate the degree of deformation of the selected solution in relation to the measured quantities.
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.