小兴安岭地区天然沼泽林生产力与植被碳密度  

Productivity and Vegetation Carbon Density of Natural Swamp Forests in Lesser Xing’an Mountains,Heilongjiang

作　　者：李婉姝[1] 牟长城[1] 吴云霞[1] 徐蕊[1] 

机构地区：[1]东北林业大学,哈尔滨150040

出　　处：《东北林业大学学报》2010年第8期39-44,共6页Journal of Northeast Forestry University

基　　金：黑龙江省科技攻关项目(GA06B302-5)资助

摘　　要：采用样带网格调查法和标准木解析法,研究了小兴安岭地区不同类型天然森林沼泽群落的树种组成结构、径级分布、蓄积量、生物量和生产力,并估算碳密度。定量评价了该地区天然沼泽林群落的生产力现状及碳密度水平,为东北地区乃至全国森林生态系统碳储量的估算提供可靠的科学依据。研究表明:不同类型的天然沼泽林均以中、小径级林木占优势;蓄积量和生物量均呈现出落叶松—藓类沼泽>落叶松—苔草沼泽>白桦沼泽>毛赤杨沼泽>落叶松—泥炭藓沼泽;生产力呈现出落叶松—藓类沼泽与落叶松—苔草沼泽相差不大,均高于毛赤杨沼泽,其次为白桦沼泽,而以落叶松—泥炭藓沼泽为最低;除落叶松—泥炭藓沼泽外,其他各沼泽林的碳密度均高于黑龙江省天然林碳密度及全国森林植被碳密度水平。Tree species composition, diameter distribution, stand volume, biomass and productivity of different types of natural forest-swamp communities in Lesser Xing＇ an Mountains were studied by the belt transect method and the average sample tree method, and carbon density was also estimated. The existing productivity status and the carbon density level for natural forest-swamp communities were quantitatively evaluated aimed to provide a reliable scientific basis for the estimation of carbon storage of forest ecosystem in Northeast China and even in the whole country. Results demonstrate that trees in small and medium diameter classes are dominant in different types of natural forest-swamp communities. The volume and biomass of Larix gmelinii-moss swamp are highest, followed by L. gmelinii-Carex swamp, Betula platyphylla swamp, Alnus sibirica-swamp, and L. gmelinii-Sphagnum swamp in order, while the productivities of L. gmelinii-moss swamp and L. gmelinii-Carex swamp are close, which are higher than that of A. sibirica-swamp followed by B. platyphyUa swamp, while that of L. gmelinii-Sphagnum swamp is the lowest. Except for L. gmelinii-Sphagnum swamp, the vegetation carbon density level of all the swamp forests is higher than that of natural forests both in Heilongjiang Province and in the whole country.

关 键 词：小兴安岭 天然沼泽林 生产力 碳密度 

分 类 号：Q948[生物学—植物学]