枫桦红松林凋落物分解真菌生态群的研究

小兴安岭枫桦红松林凋落物分解真菌生态群共签定出99属种,其中树上活体分解寄生菌10种、兼性菌5种,微型腐生菌36个属、腐生担子菌47种。根据凋落物分解真菌在分解过程中所处的生态位不同,分为四个生态群:叶面寄生分解真菌(以Melampsora, Uncinula等为代表)、叶面兼性分解真菌(以Mycosphaerella,Lophodermium为代表)、叶栖初生腐生分解真菌(以Lophodermium nitens为典型代表)、叶栖习居次生腐生分解真菌(微型真菌以Alternaria,Trichoderme等为代表,腐生担子菌以Clitocybe,Russula等为代表)。在凋落物分解真菌方面,为枫桦红松林生态系统研究,提供了重要科学资料。

STUDY ON DECOMPOSITION MYCOFLORA IN COSTATA BIRCH-KOREAN PINE FOREST LITTERS

Ninety-nine genera and species were identified in the decomposition mycoflora of costata birch-korcan pine forest litters in Lesser Xinganling Mountains of Northeastern China, including ten species of living-decomposition parasitic fungi, five species of facultative fungi, thirty-six genera of microsaprophytes and forty-seven species of saprophytic basidiomycetes. Four types of flora can be divided according to the niche which the decomposition fungi existed in the litters: (1) Leaf decomposition parasites (dominanted by Melampsors and Uncinula). (2) Leaf facultative fungi (dominanted by Mycospha erella and Lophodermium). (3)Primary leaf decomposition saprophytes (dominanted by Lophodermium nitens). (4) Secondary Leaf-inhabiting decomposition saprophytes(dominanted by microfungi Alternaria and Trichoderma, and saprophytic basidiomycctes Clitocybe and Russula).It presents an important scientific information on the studing of litters decomposition fungi in costata birch-korean pine forest.