以落叶松人工林生态系统生物产量为基础，系统开展生产力综合评价、生产力形成与长期生产力维持的研究。主要论述落叶松人工林生态系统生物量、碳储量积累与分配格局；基于光合、呼吸作用研究落叶松人工林生产力形成的生理生态过程，揭示树木光合产物分配的生理生化基础以及生产力对环境的响应机制；开展林分养分分配机制、凋落物分解机制和土壤质量变化机制的研究，以揭示林木—土壤—凋落物间养分流转规律；从生产力形成机制和养分循环规律上分析系列培育措施对长期生产力的影响，构建生产力变化机理模型，并将培育措施与其进行有效耦合，应用模型开展培育作业定量优化分析，确定最优的培育措施从而得到维持落叶松人工林长期生产力和可持续经营的关键技术，形成一套提高和维持生产力的综合技术体系，促进落叶松人工林长期生产力的维持和可持续健康发展。

Based on biomass production in Larch artificial forest ecosystem, comprehensive evaluation, formation and maintenance of the productivity in Larch plantation were systematically research. The accumulation and distribution of biomass and carbon in Larch plantation were analyzed. The physiological and ecological processes of productivity formation were studied based on photosynthesis and respiration, to reveal the physiological and biochemical basis of tree Photosynthetic products allocation and response mechanism of productivity on the environment. Developed the mechanism of nutrient allocation in stand, litter decomposition and soil quality transformation, to expound the rule of nutrient circulation in between the forest, soil, litter. The change of long-term productivity were researched in different silvicultural measures from the productivity formation mechanism and nutrient cycling rules, construct the model of productivity change mechanism, The silvicultural measures were added to the model, to optimize silvicultural measures, to determine the optimal cultivation measures so as to obtain the key technology to maintain long-term productivity of Larch plantations, formed a set of comprehensive technical system to promote and maintain the long-term productivity, healthy development of Larch plantation.