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本文研究了广西龙胜县里骆林区、宜山县庆远林区、岑溪县七坪林区和田林县老山林区四种不同生态地理区域杉木人工林土壤微生物及其生化活性。研究结果表明:1.土壤微生物的总数及各类群数量均以龙胜县里骆林区和田林县老山林区杉木人工林土壤最高,岑溪县七坪林区次之,宜山县庆远林区最低。2.土壤生化活性包括士壤氮的转化强度,土壤碳的氧化代谢能力和土壤酶活性,也均以龙胜县里骆林区和田林县老山林区杉木人工林土壤最强,岑溪县七坪林区次之,宜山县庆远林区最弱。3.四种不同生态地理区域杉木人工林生长状况与土壤微生物的数量分布和生化活性表现相似规律,龙胜县里骆林区和田林县老山林区杉木人工林林木生长最好,岑溪县七坪林区次之,宜山县庆远林区最差。
In this paper, the soil microorganisms and their biochemical activities in Cunninghamia lanceolata plantations in four districts of Lulin County, Longshan County, Guangxi Province, Qingyuan Forest Area in Yishan County, Qianting Forest District in Hexi County and Laoshan Forest Area in Tiantianlin County were studied. The results showed as follows: 1. The total number of soil microorganisms and the number of each group were the highest in the Chinese fir plantation in Lulin District, Liansheng County and Laoshan Forest Area, Tianlin County, followed by Qiping Forest District in Cenxi County, Qingyuan Forest in Yishan County The lowest area. Soil biochemical activities include soil nitrogen conversion intensity, soil carbon oxidative metabolism and soil enzyme activity, but also to Longsheng County, Lulin and Tianlin County Laoshan forest fir plantation soil strongest, Cenxi seven Pinglin second, Yishan County, the weakest forest area. The growth of Cunninghamia lanceolata plantations and the quantitative distribution and biochemical activity of soil microorganisms in four different ecologically and geographically different regions showed that the growth of Cunninghamia lanceolata plantation was the best in Lulin Forest District of Liansheng County and Laoshan Forest of Tianlin County, Pinglin second, Yishan County, the worst forest area in Qingyuan.