杜仲人工林生物量和生产力研究  

A STUDY ON BIOMASS AND PRODUCTIVITY OF EUCOMMIA ULMOIDES PLANTATION

作　　者：潘攀 李荣伟[1] 覃志刚[1] 全美景 曹军 

机构地区：[1]四川省林业科学研究院,成都610081 [2]西充县林业局,四川西充637200

出　　处：《长江流域资源与环境》2000年第1期71-77,共7页Resources and Environment in the Yangtze Basin

基　　金："九五"国家攻关课题!"长江中上游防护林经营利用技术研究"内容之一部分

摘　　要：对四川西部和北部丘陵、低山地区的杜仲人工林分生物量和生产力进行了测定和研究。按“平均标准木法”和“样方收获法”分别调查了乔木层、草本地被物层和枯枝落叶层的生物量。据调查数据,用“相对生长法则”建立了乔木层单株立木各器官干重的回归方程,方程的精度在93.6%以上,具参考价值。文中还研究了林分平均净生产量和产量结构。结果表明,四川杜仲人工林分生物量平均为64.390t/hm2,净生产量为9198.57kg/hm2.a。其中,乔木层生物量为56.111t/hm2,占林分总生物量的87.14%,净生产量为8015.83t/hm2,占林分净生产量的87.57%;林分中草本的生物量和净生产量分别占林分生物量和净生产量的5.70%和5.72%;枯枝落叶层现存量为4.610t/hm2,占林分生产力的7.16%,林分年枯落物量为618.56kg/hm2.a,占林分生产力的6.57%。另外,欲获得较大林分生物量需对现有林分进行密度调控。The results of a preliminary research on plant biomass and production of \%Eucommia ulmoides\% plantation in the West and North hilly and low mountainous area of Sichuan Province are presented here.Arbor stand,herbaceous soil covering,and litter were surveyed by “average standard tree' and “divided storeys' method. The following regression equations were derived from the standing crop of the felled trees:\;lgS=0.897 85lg(D\+2H)+1.647 29; lgZ=0.921 63lg(D\+2H)+0.892 44; lgP=0.825 24lg(D\+2H)+0.781 01; lgY=0.604 99lg(D\+2H)+1.223 88; lgX=0.8306 4lg(D\+2H)+1.175 88.\;The estimated total biomass of \%Eucommia ulmoides\% stand is 64.390 t/hm\+2, The productivity is 9 198.57 kg/hm\+2 ,Total aboveground biomass is 56.111 0 t/hm\+2,and the productivity is \{801 5.83 kg/hm\+2.a\},in which the percentage of trunks, barks,branches, leaves and roots are 62.45%, 5.71%, 12.5%, 4.74% and 14.60% respectively. The biomass percentages of \%Eucommia ulmoides\% , herbs and litter are 87.14%, 5.70% and 7.16% respectively. The productivity percentages of \%Eucommia ulmoides\%, herbs are 87.57% and 5.72% respectivity. Annual litter and drying trees of \%Eucommia ulmoides\% stand amount to 618.56 kg/hm\+2.a, and the percentage is \{6.75%.\}

关 键 词：四川 杜仲 人工林 生物量 密度 

分 类 号：S727.340.1[农业科学—林木遗传育种]