杉木与乐东拟单性木兰混交林经济生态功能研究

在福建省洋口林场开展杉木与乐东拟单性木兰混交林研究,从生长量、蓄积量、林分植被多样性、土壤理化性质等方面分析了混交林和杉木纯林的经济和生态效益。结果表明,杉木(Cunninghamia lanceolata)与乐东拟单性木兰(Parakmeria lotungensis)带状混交林(5∶5和6∶4)中杉木生长较杉木纯林迅速,混交林植被发育繁茂,混交林土壤容重小,而孔隙度大,表层土壤的养分含量高于杉木纯林。杉木与乐东拟单性木兰带状混交可减缓杉木纯林地力衰退,为杉木林合理经营提供理论依据。

Economic and Ecological Functions of Mixed Forest of Cunninghamia lanceolata and Parakmeria latungensis

Mixed forest of Cunninghamia lanceolata and Parakmeria latungensis were studied in Yangkou Forest Farm of Fujian Province;economic and ecological benefits of mixed forest and pure forest of C.lanceolata were analyzed on their growth,volume,stand vegetation diversity,soil physical and chemical properties;result shows that :among strip mixed forest of C.lanceolata & P.latungensis(5:5 and 6:4),C.lanceolata grow rapidly than pure forest of C.lanceolata;vegetation of mixed forest grow flourish;soil bulk density of mixed forest is small;porosity are large;nutrient content of the surface soil is much higher than that of the pure forest of C.lanceolata.Strip mixed forest of C.lanceolata and P.latungensis can slow pure forest of force recession of C.lanceolata,and provide a theoretical basis for reasonable operating of C.lanceolata.