TY - Bulletin of Botanical Research A1 - FAN Jing, ZHANG Yu-Hong T1 - Study on photosynthetic capacity and leaf nitrogen content of main secondary forest-forming species in Heilongjiang Province Y1 - 2005-09-15 JF - Bulletin of Botanical Research JO - Bulletin of Botanical Research SP - 345 EP - 347 VL - 25 IS - 3 UR - https://bbr.nefu.edu.cn N1 - 10.7525/j.issn.1673-5102.2005.03.022 ER -