摘要
采用样方调查及取样分析方法,研究了长沙市城郊4种人工林林下植被物种多样性、生物量及其土壤理化性质,并探讨了它们之间的相关性。结果表明:4种人工林灌木层植物丰富度、多样性指数均高于草本层,但均匀度指数却低于草本层;林下植被生物量总体表现为针叶林高于阔叶林;土壤养分含量垂直分布表现为随土壤深度增加而下降规律明显;土壤全N、全K、速效K含量与林下植物物种多样性指标呈显著相关性(p<0.05),林地土壤含水率、速效P、速效K含量对各项多样性指标影响较为明显;灌木层生物量与pH值、枯落物生物量与全N的相关性较大,草本层生物量与有机质呈显著的负相关(p<0.05),总生物量与全N相关性显著(p<0.05)。
Using sample surveys and sampling method,this paper is to study species diversity and biomass of undergrowth vegetation,soil physical and chemical properties,and correlation between them in four plantation of suburbs of Changsha.The results showed that shrub layer richness and diversity indexes were all higher than herb layer,but evenness index was opposite;biomass of undergrowth vegetation showed coniferous forestbroad leaved forest;the vertical differentiation law of soil nutrient was obvious descend with increasing of the depth of the soil layer;TN,TK and AK had close relationship with diversity index of undergrowth vegetation（p0.05）;soil water content,AP and AK had good prediction ability on diversity index;there are relativity between shrub layer biomass and pH,TN and litter layer biomass.Herb layer biomass had significant negative relativity with soil organic matter content（p0.05）.Total biomass had relativity with TN content（p0.05）.
出处
《水土保持学报》
CSCD
北大核心
2010年第6期213-217,共5页
Journal of Soil and Water Conservation
基金
科技部公益性研究项目(2007415)
国家野外科学观测研究站项目(20060515
20070822)
国家林业局重点项目(200611
2007R23)
湖南省科技厅重点项目(2006SK4059
2007SK4030)
关键词
长沙城郊
人工林
林下植被
土壤养分
相关性
suburbs of Changsha
plantation
undergrowth vegetation
soil nutrient
relativity
