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对炼山与不炼山杉木林地微生物四年的定位研究表明:不同林地清理方式通过不同方式处理采伐剩余物,导致了林地微生物的较大差异。炼山林地短期内土壤微生物大量繁殖,加快了炼山引起的林地养分释放,造成大量养分流失;不炼山林地采伐剩余物则能缓慢分解释放养分。从维护土壤肥力角度看:不炼山清理迹地优于炼山。但不同清理方式林地三大类微生物中仍以细菌数量占优势,放线菌、真菌次之。在各生理类群中,以氨化细菌占优势,嫌气性固N菌其次,纤维素分解菌、好气性固N菌最少。利用土壤微生物数量来表示林地整体肥力是不够确切的。
The research on the four-year positioning of the microorganisms in the refining and non-refining Cunninghamia lanceolata forests shows that the different ways of clearing the wood residues in different ways can lead to the great differences in the microorganisms in the woodland. In the short term, the soil microorganisms multiply in the mountain forests, accelerating the release of nutrients in the woodlands caused by the refining and resulting in the loss of a large amount of nutrients. However, the harvesting residues can be decomposed and released slowly without refining. From the point of view of maintaining soil fertility: No refining is better than refining. However, the number of bacteria in the three categories of woodlands with different cleaning methods still dominated, with actinomyces and fungi being the second. Among all the physiological groups, ammoniated bacteria predominate, followed by anaerobic solid N-bacteria, followed by cellulose-decomposing bacteria and aerobic solid N-bacteria. The use of soil microorganisms to represent the overall fertility of woodland is not precise enough.