长江三峡地区退化生态系统土壤微生物的初步研究*

doi:10.17520/biods.1997041

生物多样性 ›› 1997, Vol. 05 ›› Issue (4): 241-245. DOI: 10.17520/biods.1997041

所属专题：土壤生物与土壤健康

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长江三峡地区退化生态系统土壤微生物的初步研究^*

王其兵,贺金生,陈伟烈

(中国科学院植物研究所, 　北京　100093)

收稿日期:1996-10-10 修回日期:1996-12-24 出版日期:1997-11-20 发布日期:1997-11-20

Preliminary studies on the soil microorganisms of degraded ecosystem in the Changjiang River Sanxia region

Wang Qibing, He Jinsheng, Chen Weilie

Institute of Botany , Chinese Academy of Sciences , Beijing 　100093

Received:1996-10-10 Revised:1996-12-24 Online:1997-11-20 Published:1997-11-20

摘要/Abstract

摘要：

通过对长江三峡地区4种退化生态系统类型，每一类型5个土壤样品中微生物的初步研究，结果表明该地区土壤每克干土中真菌和细菌的数量分别为 8.62×10⁴ ～1.31×10⁵cfu 及 1.547×10⁷～6.957×10⁷cfu，但不同退化生态系统类型下土壤微生物的数量有所不同，其中单位重量土壤真菌数量 (cfu/g)多少顺序为：栓皮栎林(Quercus variabilis forest)＞马尾松林( Pinus massoniana forest)＞马尾松-栓皮栎混交林( Pinus massoniana-Quercus variabilis forest)＞杉木林( Cunninghamia lanceolata forest),细菌数量顺序为：马尾松-栓皮栎混交林( Pinus massoniana-Quercus variabilis forest)＞栓皮栎林( Quercus　variabilis forest)＞马尾松林( Pinus massoniana forest)＞杉木林( Cunninghamia lanceolata forest)。真菌种类鉴定表明，青霉菌(Penicillium ssp.)、镰刀菌(Fusarium spp.)、木霉菌(Trihoderma spp.)和葡萄孢菌(Botrytis spp.)等是组成该地区土壤真菌的主要类群。

关键词: 动植物关系, 食种子动物, 植物种群更新, Caragana

Abstract

Five soil samples were collected from main types of degraded ecosystem in the Sanxia region of Changjiang River for determining the amount and identifying the species of soil microorganisms. The results show that the amount of the fungi and the bacteria are 8.62×10⁴～1.31×10⁵cfu/g and 1.547×10⁷～6.957×10⁷cfu/g (based on the dry soil) respectively. But the amount of the two kinds of soil microorganisms are different among the degraded ecosystems, the amount of fungi is in the order of Quercus variabilis forest ＞Pinus massoniana forest ＞Pinus massoniana-Quercus variabilis forest ＞Cunninghamia lanceolata forest and the amount of bacteria is in another order of Pinus massoniana-Quercus variabilis forest ＞ Quercus variabilis forest ＞Pinus massoniana forest ＞Cunninghamia lanceolata forest. According to fungi species identifying, the main fungi populations are Penicillium spp., Fusarium spp., Trihoderma spp. and Botrytis spp. etc. in soils of the studied areas.

Key words: animal-plant interaction, seed predation, plant population regeneration, Caragana

王其兵, 贺金生, 陈伟烈 (1997) 长江三峡地区退化生态系统土壤微生物的初步研究^*. 生物多样性, 05, 241-245. DOI: 10.17520/biods.1997041.

Wang Qibing, He Jinsheng, Chen Weilie (1997) Preliminary studies on the soil microorganisms of degraded ecosystem in the Changjiang River Sanxia region. Biodiversity Science, 05, 241-245. DOI: 10.17520/biods.1997041.

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长江三峡地区退化生态系统土壤微生物的初步研究^*

Preliminary studies on the soil microorganisms of degraded ecosystem in the Changjiang River Sanxia region

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