经营模式对马尾松天然次生林林下植被生物量及其分布格局的影响  

Effect of different forest management on the biomass and distribution pattern of undergrowth vegetation of the natural secondary forest of Pinus massoniana

作　　者：罗佳[1,2] 邓鹰鸿[3] 田育新[1] 周小玲[1] 陈建华[2] 曾掌权[1] 牛艳东[1] 姚敏[1] 

机构地区：[1]湖南省林业科学院,湖南长沙410004 [2]中南林业科技大学,湖南长沙410004 [3]湖南省林业厅,湖南长沙410004

出　　处：《湖南林业科技》2014年第2期65-68,共4页Hunan Forestry Science & Technology

基　　金：中德财政合作湖南小农户造林项目(BMZ-2002 65 702);湖南省林业科技计划项目"武陵山区森林资源可持续经营模式研究"(2012-10);"十二五"国家科技支撑计划(2011BAD38B0405)

摘　　要：以不同森林经营模式下马尾松天然次生林为研究对象,对经营1年后其林下植被生物量的分布特征进行研究。结果表明:不同经营模式下,马尾松天然次生林下活地被生物量均以灌木层生物量为主,枯落物层生物量对林下植被总生物量的贡献亦大。经营模式为保留密度900株/hm2的马尾松林下植被总生物量最高,而保留密度为2 100株/hm2的马尾松林下植被总生物量最低。保留密度过大或过小林下植被生物量都不高,说明适宜的保留密度才有利于提高马尾松天然次生林下植被的生物量。With the natural secondary forest of Pinus massoniana by different forest management as the research object, the distribution pattern of the biomass of undergrowth vegetation after managing one year was analyzed. The results showed that, under different forest management, the biomass of living vegetation of levels of the natural secondary forest of Pinus massoniana was the highest in shrub layer, the other contribution of total biomass of undergrowth vegetation was litter lay. The total biomass of undergrowth vegetation of Pinus massoniana＇forest was the highest by treatment method of reserved density of 900 plants per hectare, the lowest by reserved density of 2100 plants per hectare. The biomass of undergrowth vegetation was not high when the reserved density was high or low, this demonstrated that the suitable reserved density could increase the biomass of undergrowth vegetation of the natural secondary forest of Pinus massoniana.

关 键 词：林下植被 生物量 分布格局 森林经营 

分 类 号：S718.542[农业科学—林学]