STUDIES ON SOIL FERTILITY FOR NATURAL FOREST OF CASTANOPSIS KAWAKAMII REPLACED BY BROADLEAF PLANTATION
Yang Yusheng Li Zhenwen Lui Aiqin(Fujian Forestry College) Zhang Chunneng Di Daosheng(Xinkon Forestry Farm for Teaching)
Using the method of the position observation,the soil fertility of natural forest of Castanopsis Kawakamii, plantation of Castanopsis Kawakamii and Phoebe Boumei in Xiaohu,Sanming,Fujian, were studied in 1990 The results show that, the ability of soil self-fertility for the natural forest of Castanopsis Kamakamii are stronger, which has good performance of self-regulauon and resistant. The forest stand of the pure plantation of Castanopsis Kawakamii and phoebe Bourmei is single, the forest floor and surface soil layer thin out,the function of soil structure gets bad,the store of soil nutrient elements reduces sharply,the soil enzyme actitity and fertility decrease. Soil fertility of broadleaf planted for 23 years plantation is still lower than that of natural forest. It indicated that the soil fertility of which natural forest is disturbed would have long time to recover.
【CateGory Index】： S7.74