Effects of aspect on distribution pattern of Taxus chinensis population in Yele,Sichuan Province:An analysis based on patches information Cloning and Transient Expression Analysis of Promoter of PnsICE1 from Populus simonii×P.nigra Cloning and Functional Identification of Promoter Region of GhWRKY64Induced by Multi-stresses in Cotton (Gossypium hirsutum) The Current Remote Sensing Classification Situation and Protective Strategy of Forest Vegetations in Yele Natural Reserve