Propastin, Pavel A.

[["dc.bibliographiccitation.artnumber","e0179875"],["dc.bibliographiccitation.issue","7"],["dc.bibliographiccitation.journal","PloS one"],["dc.bibliographiccitation.volume","12"],["dc.contributor.author","Chen, Yizhao"],["dc.contributor.author","Li, Jianlong"],["dc.contributor.author","Ju, Weimin"],["dc.contributor.author","Ruan, Honghua"],["dc.contributor.author","Qin, Zhihao"],["dc.contributor.author","Huang, Yiye"],["dc.contributor.author","Jeelani, Nasreen"],["dc.contributor.author","Padarian, José"],["dc.contributor.author","Propastin, Pavel"],["dc.date.accessioned","2019-07-09T11:43:31Z"],["dc.date.available","2019-07-09T11:43:31Z"],["dc.date.issued","2017"],["dc.description.abstract","Water-use efficiency (WUE), defined as the ratio of net primary productivity (NPP) to evapotranspiration (ET), is an important indicator to represent the trade-off pattern between vegetation productivity and water consumption. Its dynamics under climate change are important to ecohydrology and ecosystem management, especially in the drylands. In this study, we modified and used a late version of Boreal Ecosystem Productivity Simulator (BEPS), to quantify the WUE in the typical dryland ecosystems, Temperate Eurasian Steppe (TES). The Aridity Index (AI) was used to specify the terrestrial water availability condition. The regional results showed that during the period of 1999-2008, the WUE has a clear decreasing trend in the spatial distribution from arid to humid areas. The highest annual average WUE was in dry and semi-humid sub-region (DSH) with 0.88 gC mm-1 and the lowest was in arid sub-region (AR) with 0.22 gC mm-1. A two-stage pattern of WUE was found in TES. That is, WUE would enhance with lower aridity stress, but decline under the humid environment. Over 65% of the region exhibited increasing WUE. This enhancement, however, could not indicate that the grasslands were getting better because the NPP even slightly decreased. It was mainly attributed to the reduction of ET over 70% of the region, which is closely related to the rainfall decrease. The results also suggested a similar negative spatial correlation between the WUE and the mean annual precipitation (MAP) at the driest and the most humid ends. This regional pattern reflected the different roles of water in regulating the terrestrial ecosystems under different aridity levels. This study could facilitate the understanding of the interactions between terrestrial carbon and water cycles, and thus contribute to a sustainable management of nature resources in the dryland ecosystems."],["dc.identifier.doi","10.1371/journal.pone.0179875"],["dc.identifier.pmid","28686667"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14550"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/58901"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","1932-6203"],["dc.relation.orgunit","Fakultät für Geowissenschaften und Geographie"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.subject.ddc","550"],["dc.title","Quantitative assessments of water-use efficiency in Temperate Eurasian Steppe along an aridity gradient."],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","115005"],["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","Environmental Research Letters"],["dc.bibliographiccitation.volume","12"],["dc.contributor.affiliation","Chen, Yizhao;"],["dc.contributor.affiliation","Ju, Weimin;"],["dc.contributor.affiliation","Groisman, Pavel;"],["dc.contributor.affiliation","Li, Jianlong;"],["dc.contributor.affiliation","Propastin, Pavel;"],["dc.contributor.affiliation","Xu, Xia;"],["dc.contributor.affiliation","Zhou, Wei;"],["dc.contributor.affiliation","Ruan, Honghua;"],["dc.contributor.author","Chen, Yizhao"],["dc.contributor.author","Ju, Weimin"],["dc.contributor.author","Groisman, Pavel"],["dc.contributor.author","Li, Jianlong"],["dc.contributor.author","Propastin, Pavel"],["dc.contributor.author","Xu, Xia"],["dc.contributor.author","Zhou, Wei"],["dc.contributor.author","Ruan, Honghua"],["dc.date.accessioned","2019-07-09T11:44:46Z"],["dc.date.available","2019-07-09T11:44:46Z"],["dc.date.issued","2017"],["dc.date.updated","2022-02-09T13:19:03Z"],["dc.description.abstract","The temperate Eurasian steppe (TES) is a region where various environmental, social, and economic stresses converge. Multiple types of disturbance exist widely across the landscape, and heavily influence carbon cycling in this region. However, a current quantitative assessment of the impact of disturbances on carbon sequestration is largely lacking. In this study, we combined the boreal ecosystem productivity simulator (BEPS), the Shiyomi grazing model, and the global fire model (Glob-FIRM) to investigate the impact of the two major types of disturbance in the TES (i.e. domestic grazing and fire) on regional carbon sequestration. Model performance was validated using satellite data and field observations. Model outputs indicate that disturbance has a significant impact on carbon sequestration at a regional scale. The annual total carbon lost due to disturbances was 7.8 TgCyr−1, accounting for 14.2% of the total net ecosystem productivity (NEP). Domestic grazing plays the dominant role in terrestrial carbon consumption, accounting for 95% of the total carbon lost from the two disturbances. Carbon losses from both disturbances significantly increased from 1999 to 2008 (R2=0.82, P < 0.001 for grazing, R2=0.51, P<0.05 for fire). Heavy domestic grazing in relatively barren grasslands substantially reduced carbon sequestration, particularly in the grasslands of Turkmenistan, Uzbekistan, and the far southwest of Inner Mongolia. This spatially-explicit information has potential implications for sustainable management of carbon sequestration in the vast grassland ecosystems."],["dc.description.sponsorship","National Key R&D Program of China"],["dc.description.sponsorship","Fundamental Research Funds for the Central Universities"],["dc.description.sponsorship","National Key R&D Program of China"],["dc.description.sponsorship","APN Global Change Fund Project"],["dc.description.sponsorship","National Youth Science Fund of China"],["dc.identifier.doi","10.1088/1748-9326/aa849b"],["dc.identifier.eissn","1748-9326"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14892"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59089"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.publisher","IOP Publishing"],["dc.relation.issn","1748-9326"],["dc.rights","CC BY 3.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/3.0/"],["dc.subject.ddc","550"],["dc.title","Quantitative assessment of carbon sequestration reduction induced by disturbances in temperate Eurasian steppe"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]