不同岩性土体的日本柳杉幼树生物量研究不同岩性土体的日本柳杉幼树生物量研究-《西北林学院学报》

文章信息/Info

Title:: Biomass of Cryptomeria japonica Young Trees on Soils from Different Rocks

Author(s):: DU Wenjun; XIE Shuangxi*; LIANG Jia; LI Aimin; ZHAO Xiangxiu; (College of Forestry, Guizhou University, Guiyang, Guizhou 550025, China)

摘要:: 通过对日本柳杉(Cryptomeria japonica)的生长与土体关系的研究，为其合理布局提供理论依据。【方法】对 6 种不同岩性土体下生长的 5 年生日本柳杉采用全株挖掘法，并用烘干恒重法分别测定其各部样品干物质量，并用统计学方法求得各部生物量。【结果】在所供试的不同土体上，日本柳杉平均单株生物量大小为灰质白云岩＞变质砂岩＞煤系砂页岩＞石英砂岩＞紫色砂岩＞第四纪粘土，而其平均单株的各器官生物量大小为树干＞树叶＞树枝＞根系。另外采用相对生长模型W=aDb和W=a(D2H)b进行拟合相关系数均较高。【结论】日本柳杉在灰质白云岩上生长最好，在石英砂岩、煤系砂页岩、紫色砂岩、变质砂岩上居中，而第四纪粘土生长较差。另外可利用以上相对生长模型估测在这些土壤上生长的日本柳杉的生物量。

Abstract:: Aimed to provide a theoretical basis for reasonable arrangement of Cryptomeria japonica the relationships between the growth of the tree and the rock soils were studied. 【Method】 The whole plants of 5yearold C. japonica in six different rock soils were collected dried matters of different parts of the tree were weighted. Biomass of each part was calculated by the statistical analysis. 【Result】The biomass of the whole tree in the different rock soils was in the order of:Limy dolomite＞metamorphic sandstones＞sandstone and shale with coal＞quartz sandstone＞purple sandstone＞the quaternary clay. The biomass of different part of the tree was in the order of: trunk＞leaves＞branch＞root. The relative growth model: W = aDb and W = a (D2H)b for fitting the biomass had a more positive correlation. 【Conclusion】 The growth of C. japonica grow well in the Limy dolomite, then in quartz sandstone, sandstone and shale with coal, purple sandstone and metamorphic sandstones, but poor in the quaternary clay. These two relative growth models could be used for estimating the biomass of C. japonica in different rock soils.