%0 Journal Article
%T Comparison of diversity of arbuscular mycorrhizal fungi in different ecological environments<br>几种生态环境中AM真菌多样性比较研究
%A WANG Fa-Yuan
%A <br>王发园
%J 生态学报
%D 2003
%I 
%X Arbuscular mycorrhizal (AM) fungi inhabit a variety of ecosystems including farmland, forests, grasslands, deserts, marine beaches, saline soils, coal-mine spoil heaps, and industrially polluted zones. The biodiversity of AM fungi is considerable. The first objective of this paper was to survey the species richness, spore density, frequency, and relative abundance of AM fungi in the island forest-land of Bohai Bay, Shandong Province, the saline soils in Yellow River Delta, the coal-mine spoil heaps in south-western Shandong Province and the degenerated grassland in Inner Mongolia. A second objective was to compare the differences in AM diversity among the various ecosystems. To do this, soil and roots of dominant wild plants were collected randomly from the four surveyed environments. Samples were studied in the laboratory using trap cultures and spore counts which enabled AM fungi to be identified.There were 40 species of AM fungi in the island forest-land, 33 in the saline soils, 21 in coal-mine spoil soils and 14 in degenerated grassland respectively. The differences in species richness, spore density, frequency, relative abundance of AM fungi in these sites were related to different ecological factors in the surveyed environments. Generally, Glomus was the dominant genus, having the greatest frequency and relative abundance at all sample sites, and this was followed by Acaulospora. However, the frequency and relative abundance of Acaulospora at coal-mine spoil sites was higher than those of Glomus. At the island forest-land, the relative abundance of Gigaspora was higher than Acaulospora. A.mellea was the dominant species at the coal-mine spoil sites while Gi.margarita was dominant in the island forest-land, and G.caledonium in the saline soils. The distribution of the various AM fungi in the degenerated grassland was relatively even, with no species being particularly abundant.
%K Yellow River Delta
%K coal mine spoil
%K degenerated grassland
%K species diversity<br>黄河三角洲
%K 废煤矿
%K 退化草原
%K 物种多样性
%K 生态环境
%K AM真菌
%K 丛枝菌根
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=765ECDDC20FCEDBC&yid=D43C4A19B2EE3C0A&vid=EA389574707BDED3&iid=59906B3B2830C2C5&sid=F5D0A1CC082636E5&eid=D3B4FB961BFFD14C&journal_id=1000-0933&journal_name=生态学报&referenced_num=14&reference_num=20