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Bayan Obo area under the Baotou City in the Inner Mongolia Autonomous Region , for the desert steppe vegetation types , drought , low temperature is the key factor restricting plant introduction . Firstly, to investigate the plant resources of the arid regions , and filter out some drought tolerant, cold and strong resistance of plant species , introduction to the Bayan Obo region observed in phenology performance and growth conditions , and to study its drought tolerance performance , and low temperature stress , the major findings are: 1,2008 Baotou city , Inner Mongolia the Bayan Obo desert grassland plant resources survey screened arid steppe region of 29 kinds of ornamental plants . 2,2009 and 2010 , a total of 13 species introduction , text of Bunge (Xanthoceras sorbifolia), and Acer truncatum ( Acer truncatum ) the sand the holly ( Ammopiptanthus mongolicus ) , Amorpha ( the Amorpha fruticosa ) white thorn ( Nitraria tangutorum ) locust ( Robinia pseudoacacia ) the the microphylla children of Caragana microphylia , White Ash ( Fraxinus chinensis ) the Torch tree (Rhus typhina), bright yellow Barberry (Berberis diaphana), the pearl the plum ( Sorbaria Chromoco in ) , Tamarix (Tamarix chinensis), lilac (Syringa oblata). The sorbifolia , maple , Tamarix , microphylla children , pearl plum , lilac , bright yellow Berberis winter survival rate of 100% ; locust , torch trees , white thorn , Amorpha wintering rate of 50 % -70 % , ash and sand Holly overwintering rate of O . 3,8 introduced plant photosynthesis , transpiration date change research eight kinds of plant water use efficiency in descending order , text Bunge gt ; Acer truncatum (2009 ) ; locust gt ; the microphylla children gt ; pearl plum gt ; pewter gt ; Torch the tree gt; by lilacs ( 2010 ) . 4,6 year old seedlings of drought stress study plant drought resistance in descending order as lilac gt ; microphylla children gt ; Ash gt ; pearl plum gt ; locust gt ; torch tree . 5 to study the seven kinds of introduced plant performance under low temperature stress seven kinds of cold tolerance in plants Descending Nitraria gt ; typhina gt ; the Amorpha gt ; the microphylla children gt ; pearl plum ; Tamarix gt ; Acer truncatum (root ) ; Tamarix gt; Acer truncatum ( branches ) .
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