滇中高原华山松人工林生物量及营养元素分配格局  

Nutrient Distribution and Accumulation of Pinus armandii Plantations in Middle Yunnan Plateau,China

作　　者：李元玖 陈奇伯[1] 熊好琴[1] 舒蛟靖 赵吉霞[1] 

机构地区：[1]西南林业大学环境科学与工程学院,云南昆明650224

出　　处：《西部林业科学》2014年第4期54-60,共7页Journal of West China Forestry Science

基　　金：国家林业局林业公益性行业科研专项(201204101-10);云南省教育厅科学研究基金项目(2010Y297);西南林业大学校重点项目(111033)

摘　　要：对云南玉溪磨盘山华山松人工林(16年中龄林、26年近成熟林、43年成熟林)生物量及N、P、K、Ca和Mg等5种营养元素的分配格局和积累规律进行了研究。结果显示,3种林龄华山松人工林的生物量分别为181.515 t/hm2、284.679 t/hm2、295.311 t/hm2,乔木层生物量分别占林分的91.594%、94.760%、93.838%,乔木层的净生产力分别为10.391 t/(hm2·a)、10.375 t/(hm2·a)和6.444 t/(hm2·a);3种林龄群落各层生物量均为乔木层>枯落物层>灌木层>草本层;乔木各营养器官营养元素含量大小是树叶>树枝>树根>树皮(或树皮>树根)>树干;3种林龄华山松各器官营养元素含量均以N含量最高,其他元素含量依次为K>Mg>Ca>P,其中树叶中的N含量最高,达到16.733 g/kg^21.368 g/kg;3种林龄群落营养物质总积累量分别为1 497.993 kg/hm2、2 257.161 kg/hm2和2 810.246 kg/hm2,乔木层营养物质年积累量分别为77.532 kg/(hm2·a)、76.679 kg/(hm2·a)、58.759 kg/(hm2·a)。Biomass, nutrient （e.g.N, P, K, Ca and Mg） distribution pattern and accumulation of the 16 a, 26 a, and 43 a Pinus armandii plantations were studied in Mopanshan in Yuxi , middle Yunnan plateau, southwest China.The results showed that： the biomass of the three types of Pinus armandii plantations were 181.515 t/hm2 , 284.679 t/hm2 , and 295.311 t/hm2 respectively; the biomass of tree layer accounted for 91.594%, 94.760%, 93.838%respective-ly.The net biomass of tree layer were 10.391 t/（hm2· a）, 10.375 t/（hm2· a） and 6.444 t/（hm2· a）; bio-mass of different ages followed the order of tree layer 〉litter layer〉shrub layer〉herb layer; Pinus armandii’s nutrient content sorted by organ was in the order of leaf 〉branch〉root （ or bark〉root） 〉bark〉trunk.They were all the rich in N and in the order of N 〉K〉Mg〉Ca〉P; the content N in leaves was the highest and was between 16.733 g/kg^21.368 g/kg; the accumulation of nutrients of three types of Pinus armandii plantations were 1 497.993 kg/hm2 , 2 257.161 kg/hm2 and 2 810.246 kg/hm2 respectively; the annual accumulation of nutri-ents of tree layer were 77.532 kg/（hm2· a）, 76.679 kg/（hm2· a）, 58.759 kg/（hm2· a） respectively.

关 键 词：华山松人工林 生物量 营养元素 生态系统功能 

分 类 号：S791.241[农业科学—林木遗传育种]