Assessment of various soil conservation strategies for upland cropping in Northwest Vietnam by using the WaNuLCAS model
- Beschreibung
Introduction
Increase in world population significantly changed the farming systems of the world. This population pressure created a rapid expansion of land for cereal and vegetable production resulted in a widespread land degradation (Pingali and Shah, 2001; Valentin et al., 2008). Mountainous landscapes in Southeast Asia are also in these drastic changes and became dominated with intensive land use. This intensive land use on mountains is directly degrading the Asian soils. Approximately two billion hectares of world land are already affected by soil degradation (Ritsema et al. 2005) and different countries are taking some serious steps to reduce the loss of fertile soil. They are promoting the farmers to use the soil conservation methods such as allay cropping, contour hedgerows, grass barriers, planting fruit tress especially agroforestry systems cultivation. Several studies reported soil conservation measures with hedgerows and grass barriers extremely effective for reducing soil loss and runoff on steep slopes (Durán Zuazo et al., 2006; Pansak et al., 2008; Quinkenstein et al., 2009). Long-term field experiments for testing the effects of such systems are quite expensive, laborious and time consuming. Therefore, dynamic crop modelling can be useful for long term testing of such complex systems and software coupling approach are useful in analysing soil degradation problems including human environmental interactions (Marohn et al, 2013). Water, Nutrient, Light Capture in Agroforestry Systems (WaNuLCAS) is the model suitable to simulate the dynamics processes and tree-soil-crop interactions in a spatial, plot and or field scale on daily basis (Van Noordjik and Lusiana 2000). A field experiment was carried out at two small catchment areas Chieng Hac and Chineg Khoi of Son La province in Northwest Vietnam with maize cropping under various conservation measures for three years. The data from this field experiment will be used for calibration and validation of WaNuLCAS V. 4.01 for soil loss and runoff.
- Projektzeitraum
- Sommersemester 2014
- Bewerbungszeitraum
- 06. bis 13.04.2014
- Durchführung
- semesterbegleitend
- Details zu Projektzeitraum und Durchführung
Work packages
WP-1. A brief introduction to WaNuLCAS model V 4.01
WP-2. In this package WaNuLCAS model will be calibrated for predicting soil loss and runoff for Chieng Hac and Chineg Khoi
WP-3. This work package will be focused on validation of the calibrated model with independent data set.
WP-4. In this package scenarios will be designed to evaluate various soil conservation methods for continuous cropping on long term basis
- Studienfach
- offen für alle Studienfächer
- Betreuende
- M.Sc. Khalid Hussain, Dr. Thomas Hilger
- Institut
- (Pflanzeproduktion in den Tropen und Subtropen)
- Sprache
- deutsch/englisch
- Teilnehmendenanzahl
- min. 1, max. 2
- Arbeitsaufwand
-
ca. 180 Stunden pro Teilnehmende:r
| 6
ECTS-Punkte
Arbeitsaufwand (Stunden und ggf. ECTS) sind ungefähre Angaben. Die tatsächlich vergebenen ECTS-Punkte ergeben sich aus der tatsächlich geleisteten Arbeit.
- Für dieses Projekt ist kein Motivationsschreiben des Studierenden erforderlich
- Projektart
- theoretisch/nicht experimentell
- Lernziele
-
Die Teilnehmende lernen in diesem Projekt:
- Introduction to WaNuLCAS Model
- To evaluate performance of the WaNuLCAS model for predicting runoff and soil loss
- Understanding the role of various soil conservation measures on controlling erosion by using the WaNuLCAS model
- Anmerkungen für Studierende
- Schlagworte
- Soil conservation, modelling, WaNuLCAS, North-west Vietnam