Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.agee.2012.08.006 |
Phenological dynamics of irrigated and natural drylands in Central Asia before and after the USSR collapse | |
Kariyeva, Jahan1,2; van Leeuwen, Wiliem J. D.1,2 | |
通讯作者 | Kariyeva, Jahan |
来源期刊 | AGRICULTURE ECOSYSTEMS & ENVIRONMENT
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ISSN | 0167-8809 |
出版年 | 2012 |
卷号 | 162页码:77-89 |
英文摘要 | Central Asia has experienced drastic socio-economic, geopolitical, and ecological transitions within the last few decades. The USSR collapse in 1991 has led to widespread changes in land cover and land use due to economic and political transformations within the region. Management practices during and after the Soviet era have intensified ecological problems and demands on resources. Satellite derived vegetation greenness data offer insights into these dynamics by providing measurements linked to vegetation productivity and the timing of vegetation growth cycles, including the timing of greenness onset, peak, and senescence. The main research goals are to examine the impact of socio-economic and bioclimatic factors by characterizing interannual dynamics of regional land surface phenology. One of the longest available records (1981-2006) of geospatial time-series data of the biweekly Normalized Difference Vegetation Index (NDVI) were used to derive annual pheno-metrics for sites in Uzbekistan and Turkmenistan. Land cover types include irrigated agriculture, riparian zones, and arid desert regions. Statistical analysis showed significant differences between pre- and post-Soviet collapse seasonal NDVI trajectories and interannual variation in greenness onset and vegetation response. Changes in satellite-based land surface phenological information are attributed to differences in prevailing land management, climate, and socio-economic factors before and after the USSR collapse. Published by Elsevier B.V. |
英文关键词 | Remote sensing Phenology Land use change Socio-economic change Geography Uzbekistan Turkmenistan |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000312472300009 |
WOS关键词 | LAND-SURFACE PHENOLOGY ; SATELLITE SENSOR DATA ; VEGETATION INDEX ; SOUTHWEST ASIA ; INTERANNUAL VARIABILITY ; WINTER PRECIPITATION ; COVER CHANGE ; TIME-SERIES ; ARAL SEA ; EL-NINO |
WOS类目 | Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences |
WOS研究方向 | Agriculture ; Environmental Sciences & Ecology |
来源机构 | University of Arizona |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/171086 |
作者单位 | 1.Univ Arizona, Sch Geog & Dev, Tucson, AZ 85721 USA; 2.Univ Arizona, Sch Nat Resources & Environm, Off Arid Lands Studies, Arizona Remote Sensing Ctr, Tucson, AZ 85721 USA |
推荐引用方式 GB/T 7714 | Kariyeva, Jahan,van Leeuwen, Wiliem J. D.. Phenological dynamics of irrigated and natural drylands in Central Asia before and after the USSR collapse[J]. University of Arizona,2012,162:77-89. |
APA | Kariyeva, Jahan,&van Leeuwen, Wiliem J. D..(2012).Phenological dynamics of irrigated and natural drylands in Central Asia before and after the USSR collapse.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,162,77-89. |
MLA | Kariyeva, Jahan,et al."Phenological dynamics of irrigated and natural drylands in Central Asia before and after the USSR collapse".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 162(2012):77-89. |
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