土壤微生物对不同退耕还林模式的响应

›› 2007, Vol. 43 ›› Issue (zk): 110-113.

• 研究简报 • 上一篇

土壤微生物对不同退耕还林模式的响应

张健¹ 朱天辉¹ 刘子雄²

1.四川农业大学林学园艺学院,雅安625014；2.四川省森林病虫防治检疫总站,成都610081

收稿日期:2006-04-25 修回日期:1900-01-01 出版日期:2007-10-25 发布日期:2007-10-25

Response of Soil Microbes to Different Models of Conversion of Farmland to Forest

Zhang Jian¹,Zhu Tianhui¹,Liu Zixiong²

1.College of Forestry and Horticulture,Sichuan Agricultural University Ya'an 625014;2.General Station of Forest Pest Management and Quarantine of Sichuan Province Chengdu 610081

Received:2006-04-25 Revised:1900-01-01 Online:2007-10-25 Published:2007-10-25

摘要/Abstract

关键词: 退耕还林, 土壤微生物, 根际效应

Abstract: Seasonal variation of soil microbial amounts and rhizospheric effect of two forest trees were studied systematically on Betula luminifera forest and Pleioblastus amarus forest in Hongya County,Sichuan Province.The effects of two models of conversion of farmland to forest on soil microbial amounts and activities were analyzed and discussed too.The results showed that soil microbial amounts were increasing from spring to autumn,and the most in autumn,and the least in winter in B.luminifera forest and P.amarus forest.Bacteria amounts were predominant,actinomyces amounts were the next,and fungi amounts were the least among composition of communities of soil microbes.The sequence of total amounts of soil microbes was as follows:P.amarus forest(1.29×10⁹ individual·g^-1 dry soil)>B.luminifera forest(0.29×10⁹ individual·g^-1 dry soil)in a year.Rhizospheric effects of the two forest trees under two models of conversion of farmland to forest were different in different seasons.And the R/S values of microbes were 1～2 in different seasons,and the R/S values were 1.37 and 1.24 respectively in B.luminifera forest and P.amarus forest in a year.The ecological benefit of model of P.amarus forest was better than B.luminifera forest by evaluation of total soil microbes.

Key words: conversion of farmland to forest, soil microbes, rhizospheric effect

张健朱天辉刘子雄. 土壤微生物对不同退耕还林模式的响应[J]. , 2007, 43(zk): 110-113.

Zhang Jian;Zhu Tianhui;Liu Zixiong. Response of Soil Microbes to Different Models of Conversion of Farmland to Forest[J]. , 2007, 43(zk): 110-113.

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土壤微生物对不同退耕还林模式的响应

Response of Soil Microbes to Different Models of Conversion of Farmland to Forest

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