Description: The rehabilitation of degraded land and recommendations for a sustainable land use require an understanding of the ecosystem and, in particular, knowledge about vegetation and soil characteristics. The widespread occurrence of degraded barren, i.e. unproductive, land is a severe problem for agricultural development in Southeast Asia. In Vietnam, despite governmental efforts to counteract, the share of the land classified as barren is still increasing and has reached about 40 percent, most of it in hillside areas. Up to now the delineating system for classifying land as barren is based mainly on political stipulation whereas ecological information on vegetation and soils is scarce. Past rehabilitation strategies focussed on reforestation measures only whereas adapted crop or pasture plant species were neglected. In view of the demographic pressure on land resources, it is evident that the rehabilitation of degraded land can contribute significantly to food security and income generation. In particular legumes have the potential to play a major role for sustainable rehabilitation strategies. The present project aims at classifying the plant communities from barren hillsides with different types and levels of degradation, in a region where livestock husbandry plays a role. A further objective is the preliminary assessment of the soil rehabilitation potential of a tropical multiple-purpose legume shrub. On barren hills of the Son La and Bac Kan provinces in Northern Vietnam, vegetation community groups will be assigned, and soil characteristics and land use history analysed at twenty sites with about fifteen micro-sites each. Cluster analyses, principal component analysis and multivariate ordination are used to explore and define relationships among ecological site characteristics and vegetation. The detailed ground analysis in this project leads to a basic framework for further land evaluation that is needed for land rehabilitation and the development of planning strategies for land use. Indigenous knowledge about the use of plant species found in the sampled vegetation will be inquired in a survey among local people. Seeds of potential forage plants will be collected and stored for future evaluation and use. Samples of above-ground material of potential forage plants will be analysed for forage value and, eventually, anti-nutritive components. A first field evaluation of a core collection of Flemingia macrophylla will be conducted on a very degraded barren-hill site in Ba Vi, Ha Tay province, with the objective to describe the species' variability regarding relevant agronomic traits and its potential for soil rehabilitation. The collection consists of 20 genotypes from South China, Thailand, Malaysia, Indonesia, Papua New Guinea, Vietnam, Cameroon, Ghana, and Colombia. (abridged text)
SupportProgram
Origins: /Bund/UBA/UFORDAT
Tags: Ländliche Entwicklung ? Bodenvegetation ? Weiterverwendung ? Getreide ? Vegetation ? Vegetationskartierung ? Pflanzensamen ? Futterpflanze ? Landesplanung ? Leguminosen ? Ökologie ? Saatgut ? Strauch ? Tierhaltung ? Bodeninformationssystem ? China ? Kamerun ? Malaysia ? Thailand ? Vietnam ? Ghana ? Guinea ? Material ? Wiederaufforstung ? Futtermittel ? Pflanzenart ? Vegetationsgeschichte ? Agrarwissenschaften ? Bodeninformation ? Statistische Analyse ? Informationssystem ? Tropengebiet ? Aufforstung ? Natürliche Ressourcen ? Standortbewertung ? Flächennutzung ? Bodenökosystem ? Indigene Bevölkerung ? Demografie ? Ökologische Bewertung ? Pflanzengesellschaft ? Ackerfläche ? Bodensanierung ? Salztonebene ? Nachhaltige Landnutzung ? Standortwahl ? Abbau ? Ernährungssicherheit ? Sanierung ? Gebiet ? Landwirtschaft ? Bewertung ? Maßnahme ? Ökosystem ? Erdoberfläche ? Ressource ? Speicherung ? Landschaftsnutzung ? Vermehrung ? Vegetationsgliederung ?
Region: Baden-Württemberg
Bounding boxes: 9° .. 9° x 48.5° .. 48.5°
License: cc-by-nc-nd/4.0
Language: Englisch/English
Time ranges: 2000-01-01 - 2003-12-31
Webseite zum Förderprojekt
https://sfb564.uni-hohenheim.de/ (Webseite)Accessed 1 times.