Betula alnoides Admixed with Castanopsis hystrix or Cunninghamia lanceolata from Two Reforestation Case Studies in Southeast China

Background: There was no literature showed superior provenance or clone of B. alnoides selected for the development southern Fujian, as well suitable reforestation mixed pattern developed preventing trunk pests effectively. It is significant to select an optimal be expanded in Fujian. Methods: The tissue-cultured seedlings Betula were introduced south-east China tests. admixed with Castanopsis hystrix five patterns at Wanshiqing Area and Cunninghamia lanceolata four Beijing Area. A sample plot 20 m × 30 set each experimental treatment tree investigated plot, including height (m), DBH (cm), diseases freeze injury. Result: effects pure forest better than that cluster height. not beneficial growth C. early stage. average annual height, individual volume achieved 2.2-2.5 m, 2.8-3.0 cm 0.0061-0.0074 m3, respectively.