林业科学2011，Vol.47Issue(5)：145-149,5.
连栽杉木林不同生育阶段林下植被生物量
Understory Vegetation Biomass in Successive Rotations of Different Aged Cunninghamia lanceolata Forests
摘要
Abstract
Biomass of understory vegetation in Chinese fir( Cunninghamia lanceolata) forests in successive rotation was investigated for 14 years in the sixth watershed of National Field Station for Scientific Observation and Experiment in Huitong, Hunan Province to study dynamics of understory vegetation species and biomass at different growth stages. The results showed that with the 14-year growth and development of Chinese fir forests in successive rotation, biomass of understory vegetation descended from 10. 02 t·hm-2 at young (3-year-old) forest stage to 1.60 t·hm-2 at pole stage of 14-year-old Chinese fir forests, decreased by 84. 0％. At the young forest stage, biomass of trees and small trees (470.74 -885.68 kg·hm-2) was dominant in understory shrub layer, accounted for 58.3％ - 78.3％; biomass of Miscanthus sinensis (342.67- 6 853.23 kg·hm-2) was the most in herb layer, which accounted for 50. 2％ -80. 7％. At fast growing stage, biomass of small trees e.g. Aralia chinensis (1 068.37 -2 886.01 kg·hm-2) was highest in understory shrub layer, which accounted for 41.2％ -69. 6％ ;biomass of ferns (1 187.67 -1 856.51 kg·hm-2) is highest in herb layer, which accounted for 44.7％ -74. 3％. At pole stage, biomass of Rhus chinensis and Maesa japonica (439.63-1133.7 kg·hm-2) was dominant in understory shrub layer, which accounted for 65.2％ -89.4％; biomass of Dicranopteris linearis (236. 67 kg·hm-2) and ferus(874. 40 kg·hm-2) was highest in herb layer, which accounted for 33.4％ and 94. 3％, respectively. The results provided scientific basis for maintaining nutrient cycling and carbon balance, conserving and increasing forestland capability and sustainable management.关键词
连栽杉木林/林下植被/生物量/动态变化/湖南会同Key words
Chinese fir ( Cunninghamia lanceolata ) forests of successive rotation/ understory vegetation/ biomass/ dynamics/ Huitong in Hunan Province分类
农业科技引用本文复制引用
田大伦,杨超,闫文德,项文化,方晰,梁小翠..连栽杉木林不同生育阶段林下植被生物量[J].林业科学,2011,47(5):145-149,5.基金项目
国家林业公益性行业科研专项(200704015,200804030,2011432009) （200704015,200804030,2011432009）
国家自然科学基金项目(30771700,30571487,31070410) （30771700,30571487,31070410）
国家野外科学观测研究站项目(20060515,200708227) （20060515,200708227）
国家林业局项目(2007537,201042,200881) （2007537,201042,200881）
湖南省科技厅项目(2006sk4059,2007sk4030,2010TP4011-3) （2006sk4059,2007sk4030,2010TP4011-3）
教育部新世纪优秀人才支持计划(NCET-10-0151) （NCET-10-0151）
长沙市科技局(K1003009-61). （K1003009-61）
