Forests in Northeast China in the Greater and Lesser Khingan Mountains (GKM and LKM) account for nearly 1/3 of the total state-owned forests in the country. Regional and historical comparisons of forest plants and macrofungi will favor biological conservation, forest man-agement and economic development. A total of 1067 sam-pling plots were surveyed on forest composition and struc-ture, with a macrofungi survey at Liangshui and Huzhong Nature Reserves in the center of two regions. Regional and historical differences of these parameters were analyzed with a redundancy ordination of their complex associations. There were 61–76 families, 189–196 genera, and 369–384 species, which was only 1/3 of the historical records. The same dominant species were larch and birch with Korean pine (a climax species) less as expected from past surveys in the LKM. Shrub and herb species were different in the two regions, as expected from historical records. There was 10–50％ lower species diversity (except for herb even-ness), but 1.8- to 4-time higher macrofungi diversity in the GKM. Compared with the LKM, both tree heights and mac-rofungi density were higher. Nevertheless, current heights averaging 10 m are half of historical records (> 20 m in the 1960s). Edible macrofungi were the highest proportion in both regions, about twice that of other fungal groups, hav-ing important roles in the local economy. A major factor explaining plant diversity variations in both regions was herb cover, followed by shrubs in the GKM and herb-dominant species in the LKM. Factors responsible for macrofungi variations were tree density and shrub height. Vaccinium vitis-idaea and Larix gmelinii in the GKM but tree size and diversity were important factors in the LKM. Our findings highlighted large spatial and historical differences between the GKM and LKM in plant-macrofungal composition, forest structure, and their complex associations, which will favor precise conservation and management of forest resources in two region in the future.

Yuanyuan Wang;Hui Wen;Kai Wang;Jingxue Sun;Jinghua Yu;Qinggui Wang;Wenjie Wang

Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences,Changchun 130102, People's Republic of China;University of Chinese Academy of Sciences,Beijing 100049,People's Republic of China;Key Laboratory of Forest Plant Ecology(MOE),College of Chemistry,Chemical Engineering and Resource Utilization,Northeast Forestry University,Harbin 150040, People's Republic of China;Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016,People's Republic of China;Department of Agricultural Resources and Environment, Heilongjiang University,Harbin 150080, People's Republic of China

林业研究（英文版）

[1]Yuanyuan Wang;Hui Wen;Kai Wang;Jingxue Sun;Jinghua Yu;Qinggui Wang;Wenjie Wang-.Forest plant and macrofungal differences in the Greater and Lesser Khingan Mountains in Northeast China: A regional?historical comparison and its implications)[J].林业研究（英文版）,2022(02):623-641

macrofungal,Khingan,GKM,macrofungi,Liangshui,Huzhong,birch,rofungi,Edible,idaea

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