Study on Growth Characteristics of Young Tree of Nitraria tangutorum Artificial Afforestation in Arid Desert Area

1～3 years of young tree of Nitraria tangutorum artificial afforestation in arid desert area was as study object and comparative study was carried out on analysis of growth characteristic of young tree of Nitraria tangutorum artificial afforestation in different site conditions,the results showed: 1) with the increase of planting period,growth indexes of 1～3 years of young tree of artificial afforestation of Nitraria tangutorum in the current year presented increasing trend;growth of young tree of Nitraria tangutorum artificial afforestation was relatively slow,and phenomenon of dry tree branch often occurred;2～3 years later,with the increase of planting period,all growth indexes have been increasing year by year.2) in different site conditions,sequence of growth index of 3 years of young tree of Nitraria tangutorum was as follows: semi-fixed sand dune mobile sand dune with straw checkerboard barriers mobile sand dune fixed sand dune inter-dunal depression.3) semi-fixed sand dune and mobile sand dune with straw checkerboard barriers were suitable for Nitraria tangutorum artificial afforestation,inter-dunal depression and fixed sand dune were not suitable for Nitraria tangutorum artificial afforestation.