杉木人工林土壤肥力质量的演变趋势及维持措施的研究进展

Research progress on evolution trends and maintenance measures of soil fertility quality in Cunninghamia lanceolata plantations

近年来,人工林土壤肥力质量退化与林业生产之间的矛盾日益加剧,严重威胁林业的可持续发展,土壤肥力质量维持变得十分紧迫。针对人工林土壤肥力质量退化与维持这一热点问题,从土壤物理性质、土壤化学性质、土壤微生物、土壤酶活性、化感作用等角度系统阐述了杉木Cunninghamia lanceolata人工林经营过程中土壤肥力质量的演变趋势。众多研究表明,中国杉木人工林主要产区普遍存在土壤肥力质量退化,生产力持续降低等问题,其主要驱动因素是不可持续的营林措施。同时从轮作经营、混交复合造林、林分密度调节、肥力补偿、可持续森林管理等方面对杉木人工林土壤肥力质量维持研究成果进行了综述,并对杉木人工林土壤肥力质量维持研究进行了展望。表1参48。

In recent years,the growing contradiction between degradation of soil fertility quality and forestry production has seriously threatened the sustainable development of forestry,the maintenance of soil fertility quality has become very urgent.Aiming at the hot issue of degradation and maintenance of soil fertility quality in plantations,this paper systematically elaborates the evolution trend of soil fertility quality in management of Cunninghamia lanceolata plantations from the perspectives of soil physical property,soil chemical property,soil microorganism,soil enzyme activity and allelopathy.Many studies have shown that degradation of soil fertility quality and continuous decrease of productivity are common problems in C.lanceolata plantations,and the main contributing factor is unsustainable forestry practice.The results of soil fertility maintenance in C.lanceolata plantations are reviewed from such aspects as rotation management,mixed compound afforestation,forest density adjustment,fertility compensation and sustainable forest management.The research on soil fertility quality maintenance in C.lanceolata plantations is prospected.[Ch,1 tab.48 ref.]