第1代与第2代9年生杉木林分生产力及土壤肥力比较  

Comparison of Productivity and Soil Properties between the First and Second Generations of 9-Year-Old Cunninghamia lanceolata Plantations

作　　者：张志才 

机构地区：[1]福建省洋口国有林场,福建顺昌353211

出　　处：《福建林业科技》2012年第3期83-87,共5页Journal of Fujian Forestry Science and Technology

基　　金：CAF/IDRC/CIFOR国际合作项目REDFOL专题"中国杉木人工林多代经营立地管理与生产力研究"(1996-2001年)

摘　　要：在杉木中心产区福建省南平市峡阳镇采用以空间换时间的方法,对第1代与第2代杉木林分生产力及土壤肥力进行长期定位研究。结果表明,9年生第2代杉木林分的平均密度、平均胸径、平均树高、平均立木蓄积量和地位指数分别为2132株.hm-2、13.85 cm、9.91 m、168.94 m3.hm-2、19.54,同龄的第1代杉木林分的平均密度、平均胸径、平均树高、平均立木蓄积量和地位指数分别为1667株.hm-2、14.78 cm、10.88 m、163.53 m3.hm-2、20.86;第2代杉木林分平均树高和地位指数显著低于第1代,但蓄积量没有显著差异。第2代杉木林分的地位指数与同龄的第1代杉木林分相比下降了1.32,而与前茬(第1代)杉木林相比仅下降了0.59,第2代杉木林地土壤性质与第1代相比没有显著差异;采用杉木良种造林可延缓第2代杉木林生产力下降。Taking the way of space instead of time in Xiayang,Nanping,Fujian,the productivity of the first and second generation of Chinese fir(Cunninghamia lanceolata(Lamb.) Hook.) plantations and their soil properties were studied.Results showed that the mean stand density,DBH,height,standing volume and site index of the 9-year-old second generation of Cunninghamia lanceolata plantation were 2132 trees·hm-2,13.85 cm,9.91 m,168.94 m3·hm-2 and 19.54,respectively.Mean stand density,DBH,height,standing volume and site index of the first generation of 9-year-old Cunninghamia lanceolata plantation were 1667 trees·hm-2,14.78 cm,10.88 m,163.53 m3·hm-2 and 20.86,respectively.The mean height and site index of the second generation were significant lower than the first generation.The stocking amount difference didn't exist.Site index of the second generation decreased by 1.32 compared with the first generation,decreased by 0.59 compared with the first generation.The soil properties of the second generation Cunninghamia lanceolata plantation did not significantly degraded.Using high quality seedlings to establish the second generation of Cunninghamia lanceolata plantation could minish productivity decline.

关 键 词：杉木 栽植代数 林分生产力 土壤肥力 

分 类 号：S791.27[农业科学—林木遗传育种]