杉木人工林地力衰退研究进展

杉木作为我国重要速生树种，在我国林业生产中占据不可或缺的重要地位，但其地力衰退问题日益显露，已引起相关学者的高度重视。文中通过查阅大量文献，在前人研究的基础上，论述了杉木人工林地力衰退特征，如土壤酸化、缺磷、富铝和化感等；从不同角度论述了杉木人工林地力衰退的原因，如酸沉降加剧、不适宜的营林活动、肥料施用不当等；提出了一系列维护措施，如轮作、营造混交林、追肥等；概述了杉木人工林地力衰退的最新研究进展及今后的研究方向。

Researches on Soil Decline of Chinese Fir Plantation

Chinese fir,as the important fast-growing tree species in China,plays an indispensable role in China''s timber production. But soil degradation of Chinese fir plantation has been a visible problem,which has drawn great attention of relevant scholars. Based on the previous researches review,this paper described the characteristics of the declined soil of Chinese fir plantation,e.g.,soil acidification,phosphorus deficiency,aluminum toxicity,and allelopathy. Then it expounded the causes of the decline from different angles,such as the aggravation of acid deposition,improper forest management activities,improper use of fertilizers,etc. In view of the causes,the paper came up with a series of maintenance measures as well,such as rotation,mixed forest establishment,fertilization application and the others. Finally,it also summarized the latest studies and future research direction of soil decline of Chinese fir plantation.