The Recovery of Tamarix spp. and Sophora alopecuroides Communites Responding to the Water Resupply in the Ejin Oasis
Received date: 2012-10-22
Revised date: 2013-01-09
Online published: 2013-01-09
In order to investigate the vegetation change responses to water resource supply regimes i.e. continuously insufficient, normally, and special water resource supplement based on yearly water supplement distribution analysis in the Ejin Oasis of Heihe river lower reaches, we employed the filed investigation data collected in 1982, 2001, and 2009 to comparatively analyze characteristics of Tamarix spp. and Sophora alopecuroides community, which were dominant communities in desert riverside vegetation. The results showed that the two dominant communities restored better after 2001 than before and vegetation characters i.e. constructive species coverage, biomass, and ratio of annual branch increased, and ratio of mortal branch decreased. S. alopecuroides community compositions obviously increased near riverside than other habitats, annuals increased most significant among the composition. Water sufficient in cold season and insufficient in warm season is an unchangeable regime of water resource supplement before and after 2001 in the Ejin Oasis, this is the major problem for the oasis vegetation restores to 1982 ago while water resource supplement was normal situation in this area.
ZHAO Xue , MING Yong-fei . The Recovery of Tamarix spp. and Sophora alopecuroides Communites Responding to the Water Resupply in the Ejin Oasis[J]. Journal of Desert Research, 2013 , 33(6) : 1684 -1691 . DOI: 10.7522/j.issn.1000-694X.2013.00253
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