Study On Soil Fertility Of Korean Pine Plantations

According to ecological and soil science principles~ tho quuitity, status aml distribution of soil xuatnuits and soil biod,anical activities under the ~st generation of korean ?plantation were studied and coumpared with those under natural korean pine forest l~ rmilts dmwe&Organic nuttua~, N, P. K Contents in soil decreased, especially in 5-15cm depth under artificial pure korean pine forest as compared with those under natural korean pine forest.Available Ca decreased but available Mg increased in soil under artificial korean pine forest as compared with those under natural korean pine forestSoil available Cii and available Fe increased with soil depth. Available Cu concentrated in 40-60 cm depth but available Fe concentrated in 25-40 an depth. Available Z~ axl available Mn increased with soil depth siN! were rich in soil under natural korean pine forest.Catalase, trmmfuase, acid phosplutase activities decreased but peroxidase activity increased m soil iu~ artificial pure korean pine forest as compared with those under natural korean pine forest.Available N, P. K, Ca, Zn, Mn contents in rbinispberic soil under artificial pure korean pine forest were lower than those under nalinul korean pine forest aix! mixture forestThe biochemical activities in d駔nspheric soil decreased as indicated in decrease in soil nutrient tra~fixnution activity under artificial pure korean pine forest Puoxidase, transferase am! acid plmspbatase activities in the dizospberic soil were lower than fl~cse in non-diizospberic soil tnxkr the artificial korean pine forest as well as lower than those in diizospberic soil um~ natural forestThere is a soil acidification trend wider artificial korean pine forest as compared with that inx~ natural korean pmo forestK, Ca, Mg. Zn, Fe, Mn contents were higher in conifer leaves umler natural korean pine forest~, but N, P. Cu contents in conifer leaves were higher under artificial pure korean?forestCatalase activity was positively correlated with soil organic ratter content but negatively correlated with available Fe content Available Zn and available P were negatively correlated with peruxidase activiW Total N, alkaline soluble N, available P and moderate available K were positively correlated with transferase activity Phosphatase activity was negatively correlated with pH but positively correlated with Total P.The integrated soil fertility was lower under artificial pure korean pine kest than that under natural korean pine forestBut the integrated soil futility was highe under artificial mixture staiN! than that under pure plantation as indicated in those factors mcli as total N, alkaline soluble N, total P. available Ca, Fe, Zn am! Mn, soil organic matter content. catalase, transfuase, acid p!wspbatase activities...