Arid
DOI10.1016/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
ISSN0167-8809
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
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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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