Modellierung der vegetativen Produktivität zur Bewertung der Landdegradation im ariden und semi-ariden südlichen Afrika

Niklaus, Markus

dc.contributor.advisor	Kappas, Martin Prof. Dr.
dc.contributor.author	Niklaus, Markus
dc.date.accessioned	2014-01-23T09:33:25Z
dc.date.available	2014-01-23T09:33:25Z
dc.date.issued	2014-01-23
dc.identifier.uri	http://hdl.handle.net/11858/00-1735-0000-0022-5E04-7
dc.identifier.uri	http://dx.doi.org/10.53846/goediss-4311
dc.language.iso	deu	de
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/
dc.subject.ddc	910	de
dc.subject.ddc	550	de
dc.title	Modellierung der vegetativen Produktivität zur Bewertung der Landdegradation im ariden und semi-ariden südlichen Afrika	de
dc.type	doctoralThesis	de
dc.title.translated	Modelling of vegetative productivity to assess landdegradation in arid and semi-arid southern Africa	de
dc.contributor.referee	Kappas, Martin Prof. Dr.
dc.date.examination	2013-12-16
dc.description.abstracteng	Dry regions as the arid southern Africa are, on the one hand, strained by unfavourable climatic conditions. On the other hand, intensive land use as rangeland and for livestock farming leads to additional encroachment of these ecosystems. The consequence of this long-time stress is degradation in terms of loss of the vegetative cover and productivity. Albeit these are known facts there is still a lack of objectiveness in the long term assessment of degradation on a larger scale. In this work a method is presented, applying remote sensing time-series in a vegetation model that helps to fill this gap. The approach is based on time-series of the vegetative productivity computed by the vegetation model BETHY/DLR. The used data included SPOT-VGT LAI and ECMWF meteorology time-series for the period of 1999 to 2010. The trend-analysis of model output and climatic input results in a new land degradation index (LDI) that distinguishes between climatic and human-induced reduction of vegetative productivity.	de
dc.contributor.coReferee	Gehrold, Gerhard Prof. Dr.
dc.subject.ger	Vegetationsmodellierung	de
dc.subject.ger	Landdegradation	de
dc.subject.ger	Aride und semi-aride Gebiete	de
dc.subject.ger	südliches Afrika	de
dc.subject.eng	Vegetation Modelling	de
dc.subject.eng	Land Degradation	de
dc.subject.eng	Arid and semi-arid environments	de
dc.subject.eng	Southern Africa	de
dc.identifier.urn	urn:nbn:de:gbv:7-11858/00-1735-0000-0022-5E04-7-3
dc.affiliation.institute	Fakultät für Geowissenschaften und Geographie	de
dc.subject.gokfull	Geographie (PPN621264008)	de
dc.identifier.ppn	777000849

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