Worbes, Martin

[["dc.bibliographiccitation.firstpage","151"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Agroforestry Systems"],["dc.bibliographiccitation.lastpage","165"],["dc.bibliographiccitation.volume","68"],["dc.contributor.author","Khamzina, Asia"],["dc.contributor.author","Lamersdorf, Norbert P."],["dc.contributor.author","Martius, Christopher"],["dc.contributor.author","Worbes, Martin"],["dc.contributor.author","Vlek, Paul L. G."],["dc.date.accessioned","2018-11-07T09:07:53Z"],["dc.date.available","2018-11-07T09:07:53Z"],["dc.date.issued","2006"],["dc.description.abstract","This paper evaluates the potential of nine multipurpose tree species for afforestation of degraded land in the Khorezm region, Central Asia, particularly their suitability for biodrainage i.e., lowering the elevated groundwater table through the transpirative capacity of plantations. For this purpose water use (WU), water use efficiency (WUE) and tree physiological factors influencing transpiration were assessed during two consecutive years. Mean daily leaf transpiration differed significantly among the species and ranged during the seasons from 4.5-5.2 mmol m(-2) s(-1) for Prunus armeniaca L. to 4.5-10 mmol(-2) s(-1) for Elaeagnus angustifolia L. WU differences were triggered by species physiological features such as capability of water uptake by roots. Transpiration rates and the length of fine roots correlated highly (r = 0.7). Correlations of leaf transpiration rates with leaf area were weaker (r = 0.6). No correlations were found between salt content in plants and water uptake under conditions of slight-to-moderate rootzone soil salinity. Values of WUE per root and shoot DM were similar averaging, respectively, 0.2 and 0.3 g DM g(-1) water for two-year-old trees, and decreased with age. In addition to WU characteristics, also salinity tolerance, growth rate and the ability to produce fodder and fuelwood must be considered during species selection. Regarding these features, the N-fixing E. angustifolia ranked the highest, combining high WU, fast growth and production of nutritious feed. Examined Populus spp. and Ulmus pumila L. ranked lower but still represented potential candidates for biodrainage purposes. Typical fruit species in the region such as P. armeniaca and Morus alba, showed low biodrainage potential."],["dc.identifier.doi","10.1007/s10457-006-9006-9"],["dc.identifier.isi","000240725700007"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/25901"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.publisher.place","Dordrecht"],["dc.relation.conference","21st European Regional Meeting of the International Commission on Irrigation and Drainage"],["dc.relation.eventlocation","Frankfurt, GERMANY"],["dc.relation.issn","0167-4366"],["dc.title","Potential of nine multipurpose tree species to reduce saline groundwater tables in the lower Amu Darya River region of Uzbekistan"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","336"],["dc.bibliographiccitation.issue","9"],["dc.bibliographiccitation.journal","Forests"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Worbes, Martin"],["dc.contributor.author","Herawati, Hety"],["dc.contributor.author","Martius, Christopher"],["dc.date.accessioned","2019-07-09T11:44:36Z"],["dc.date.available","2019-07-09T11:44:36Z"],["dc.date.issued","2017"],["dc.description.abstract","Tree growth rings are signs of the seasonality of tree growth and indicate how tree productivity relates to environmental factors. We studied the periodicity of tree growth ring formation in seasonally inundated peatlands of Central Kalimantan (southern Borneo), Indonesia. We collected samples from 47 individuals encompassing 27 tree species. About 40% of these species form distinct growth zones, 30% form indistinct ones, and the others were classified as in between. Radiocarbon age datings of single distinct growth zones (or “rings”) of two species showing very distinct rings, Horsfieldia crassifolia and Diospyros evena, confirm annual growth periodicity for the former; the latter forms rings in intervals of more than one year. The differences can be explained with species-specific sensitivity to the variable intensity of dry periods. The anatomical feature behind annual rings in Horsfieldia is the formation of marginal parenchyma bands. Tree ring curves of other investigated species with the same anatomical feature from the site show a good congruence with the curves from H. crassifolia. They can therefore be used as indicator species for growth rate estimations in environments with weak seasonality. The investigated peatland species show low annual growth increments compared to other tropical forests."],["dc.identifier.doi","10.3390/f8090336"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14834"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59045"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.publisher","MDPI"],["dc.relation.eissn","1999-4907"],["dc.relation.issn","1573-5095"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.subject.ddc","570"],["dc.title","Tree Growth Rings in Tropical Peat Swamp Forests of Kalimantan, Indonesia"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]