塔里木沙漠公路防护林土壤微生物活性研究

中国沙漠

2003, Vol. 23

Issue (4): 452-458

研究论文

塔里木沙漠公路防护林土壤微生物活性研究

周智彬^1,2, 李培军²

1. 中国科学院新疆生态与地理研究所, 新疆乌鲁木齐 830011;
2. 中国科学院沈阳应用生态研究所, 辽宁沈阳 100015

Study on Soil Microorganism Activities of Shelter-forest along Tarim Desert Highway

ZHOU Zhi-bin^1,2, LI Pei-jun²

1. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;
2. Shenyang Applied Ecology Institute, Chinese Academy of Sciences, Shenyang 100015, China

全文: PDF(288 KB)

摘要： 对不同立地类型、不同生长年限、不同季节、不同树种的防护林土壤微生物数量及区系组成进行研究,分析了土壤微生物与土壤环境因子的相关关系,结果表明:咸水灌溉条件下塔里木沙漠公路防护林和人工绿地建成后,土壤结构和养分状况得到改善,微生物活性大幅度提高;土壤微生物区系组成中,细菌占绝对优势,放线菌次之,真菌最少;表层微生物数量远多于下层土壤;林地外围距林缘近的土壤微生物活性较强,3m以外微生物数量已接近流沙地微生物量;各类土壤微生物分布具不同的季节性规律,且不同立地类型防护林土壤微生物分布差异明显;随造林年限的增加,防护林的改土作用更加显著。土壤微生物分布与土壤养分含量和土壤pH值显著相关。

关键词： 塔里木沙漠公路; 防护林; 土壤微生物区系; 土壤养分; 咸水灌溉

Abstract: This paper studied the quantities and fauna component of soil microorganism in shelter-forest with different stand conditions,different ages,and in different seasons;and shelter-forest composed of different kinds of plants.The relation between quantities of soil microorganisms and soil environmental factors was analyzed also.The results indicated that after establishing of the shelter-forest and artificial greenbelt along the Tarim Desert Highway soil structure and nutrient status have been improved,and the quantities of soil microorganisms increased sharply.Among soil microorganisms,bacteria were predominant,actinomyces were at second and fungi were the least.There were more microorganisms in upper soil than ones in down soil.Outside shelter-forest,soil microorganisms near shelter-forest have higher activity,and the quantities of soil microorganisms 3 m far away from shelter-forest were almost equal to ones of shifting sand.The quantities of soil microorganisms vary with seasons,and there are distinct differences among quantities of soil microorganisms in forests under different stand conditions.The quantities of microorganisms and soil nutrient increase greatly with time elapsing,and the change will be much more obvious.Moreover,the distribution of microorganisms had the distinct relation to contents of soil nutrient and soil pH value.

Key words: Tarim Desert Highway shelter-forest soil microorganisms fauna soil nutrient saline water irrigating

收稿日期: 2002-02-07 出版日期: 2003-08-20

S154.3

作者简介: 周智彬(1969-),男(汉族),河南商丘人,博士,副研究员。主要从事植物生态学方面研究及荒漠化治理工作。E-mail:zzb4181@sina.com

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引用本文:

周智彬, 李培军. 塔里木沙漠公路防护林土壤微生物活性研究[J]. 中国沙漠, 2003, 23(4): 452-458.

ZHOU Zhi-bin, LI Pei-jun. Study on Soil Microorganism Activities of Shelter-forest along Tarim Desert Highway. JOURNAL OF DESERT RESEARCH, 2003, 23(4): 452-458.

链接本文:

http://www.desert.ac.cn/CN/ 或 http://www.desert.ac.cn/CN/Y2003/V23/I4/452

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