广西杉木人工林土壤微生物及生化特性的研究

STUDIES ON THE MICROORGANISM OF SOIL AND BIOCHEMICAL PROPRTIES IN CHINESE-FIR PLANTTION OF GUANGXI

本文对桂北龙胜里骆林区、桂中宜山庆远林区、桂南岭溪七坪林区和桂西田林老山林区以及龙胜县里骆林区不同立地杉木人工林土壤微生物及其生化特性的研究结果表明:1、四地杉木人工林土壤微生物的数量以龙胜里骆林区和田林老山林区土壤最高,岭溪七坪林区次之,宜山庆远林区最低。2、四地区杉木人工林土壤生化活性也以龙胜里骆林区和田林老山林区土壤最强,岭溪七坪林区次之,宜山庆远林区最弱。3、龙胜里骆林区不同立地杉木人工林土壤微生物数量以山洼和黑砂土土壤最多,山坡次之,山脊、红土和黄土较少。生化活性也以山洼、山坡和黑砂土土壤较强,山脊、红土和黄土较弱。但海与拔不相关。

The results indicatde: 1. In the four different area, the number of soil microorganism is highest in Lilou and Loushan forest area, the Qiping is less, the Cenyuan is least. 2. In the four different area, the soil biochemical activities and respiration are highest, in Lilou and Loushan, the Qiping are less, the Cenyuan are least. 3. In the different locality of Linlou Chinese-fir plantation region, the number of soil microorganism are highest in the valley and black sandy soil, the hillside are less, the riuge, red soil and yellow soil are least. The soil biochemical activities in valley, in hillside and black sandy soil are higher than those in ridge, in red soil and yellow soil but they haven′t relation with eievation changing.