Preliminary Report on the Mixed Experiment of Castanopsis kawakamii and Cunninghamia lanceolata
This paper conducts a continuous four-year follow-up investigation and data analysis on the mixed ex-periment of Castanopsis kawakamii and Cunninghamia lanceolata.The results show that:In the construction of Castanopsis kawakamii and Cunninghamia lanceolata mixed forests,the survival rate of Castanopsis kawakamii is significantly lower than that of Cunninghamia lanceolata.To improve the survival rate of Castanopsis kawakamii afforestation,it is necessary to increase the robust seedling rate of Castanopsis kawakamii seed sources.In the mixed forest of Castanopsis kawakamii and Cunninghamia lanceolata,the growth of Cunninghamia lanceolata is significantly faster than that of Castanopsis kawakamii,and the interspecific relationship is difficult to coordinate.If Castanopsis kawakamii is used as the target tree species,the proportion of mixed Cunninghamia lanceolata should be reduced.The initial experiment showed that under a 1∶1 mixing ratio,different mixing methods did not have a significant impact on the growth of Castanopsis kawakamii mixed with Cunninghamia lanceolata.The 1∶1 mixed model is more favorable for the growth of Castanopsis kawakamii and Cunninghamia lanceolata in different mixing ratios.The average tree height of 4-year-old Castanopsis kawakamii is 268.6cm.The average di-ameter at breast height is 3.5cm,and the average crown width is 2.20 m2.Developing Castanopsis kawakamii for-ests and adopting mixed afforestation can accelerate the speed of canopy closure,and mixed afforestation should be promoted.
万方数据
维普
