摘要
本文研究了帽儿山地区红松人工林生态系统生物生产力的特征及养分循环的过程。首先从产量生态学的基本问题入手,对红松人工林生态系统生物量、生长量、凋落量、分解量的规律性进行了较为系统的分析与研究,并对红松人工林叶面积指数、叶面积密度进行了测定。采用直接和间接相结合的评价方法,对红松人工林生态系统净初级生产力的积累过程、分配过程、转化过程、分解归还过程做了较为细致的研究和评价。同时,通过对植物、土壤、降水的静态取样和动态取样,分析和讨论了红松人工林生态系统各组成、各成份的养分(N、P、K、Ca、Mg、Cu、Fe、Zn、Mn)含量及其动态变化规律,并进一步讨论了生态系统内的养分积累、养分分配以及养分转移。对养分循环过程应用了系统分析技术,通过简化连续时变系统为连续定常系统,建立了养分循环系统动态养分模型,对了解和掌握养分循环的动态过程具有重要意义。本研究,对于指导红松速生丰产林建设,红松适生丰产林的营造、经营和管理部具有重要意义。同时,也为红松林的科学研究,做了一次重要补充和发展。
The systematic studies on primary production, including biomass, annual increment of biomass, annual litterfall, annual decomposition, leaf area index and density of leaf area of the artificial fcrest ecosystem of korean pine in Maoer Shan area have been completed with the priciples and methods of productivity ecology ln the present paper. The law of primary productivity fixing, eccumulating, distributing, conversing, decomposition and turning over in the scosystem has been revealed by the comprehensive method.Based on the studies and analysis of the net primary production, nutrient content and nutrient dynamics of different components of the ecosystem, as well as nutrient accumulation distribution and transferation of the ecosystem were determined and discussed in the paper. In the same time, the systematic analysis technique was used so study the nutrient cycling and the dynamic model of nutrient cycling was established. The modle is very important to understand the process of the nutrient cycling of the ecosystem.The sesultt of the research in this pape will be very useful for constructing and managing the stable and highyield stand of korean pine.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
1989年第S2期1-98,共98页
Journal of Northeast Forestry University
关键词
红松
人工林
生态系统
生产力
养分循环
Korean pine
Artificial forest
Ecosysten
productiviy
Nutrient cycling
