%0 Journal Article
%T BIOMASS ALLOCATION AND RESOURCE USE OF TILIA AMURENSIS JUVENILE UNDER DIFFERENT PLANTING TREATMENTS<br>不同栽植方式下紫椴幼苗生物量分配及资源利用分析
%A WANG Jun-Bang
%A WANG Zheng-Quan HU Bing-Min NIU Zheng
%A WANG Chang-Yao Institute of Agriculture Ecology
%A Life Science College
%A Zhejiang University
%A Hangzhou
%A China
%A <br>王军邦
%A 王政权
%A 胡秉民
%A 牛铮
%A 王长耀
%J 植物生态学报
%D 2002
%I Editorial Office of Chinese Journal of Plant Ecology
%X Biomass allocation, resources use and competitive pattern, the main contents in plant inter- and intra-specific competition research provide insight into the mechanism driving natural vegetation change and therefore, for better silviculture practices. In this study, we chose Amur linden (Tilia amuransis Rupr.), a dominant canopy species of the Pinus koraiensis coniferous-broadleaved forest and a commercially valuable species to address the following issues: (1) the aboveground and underground biomass allocation of Amur linden under different planting distance; (2) quantifying the effect of below- and above-ground biomass on the total biomass of the seedling; (3) to compare the allocation (or consumption) of aboveground and belowground resource in the inter- and intra-specific competition of Amur linden and Larix spp.; (4) analyzing the resource use and the competition pattern of the seedling. Experiments were designed for cultivated Amur linden juvenile pure and its mixture with Larix spp. Respectively on a sand groundmass (10 m (length), 20 m (width), 1 m (depth)) under different planting distance (including 10, 20, 30, 40 cm) in May 1997 at Mao'ershan experiment station of Northeast Forestry University, Heilongjiang province, China. The seedlings were watered and fertilized regularly to maintain growth under limited resources. At the end of September 1999, the seedling leaves, stems and roots were harvested and weighed separately to obtain the wet and dry biomass. Path analysis was applied to quantify the effect of below- and above-ground biomass on the total biomass of the seedlings, to determine the resource use and the competition pattern of the seedlings. Path analysis is a linear regression where the regression coefficient is standardized to decrease the correlativity among independents. Hence it may be applied to quantify the direct and indirect influence from the related belowground and aboveground growth to the total growth of Amur linden, and compare the relative importance of the two dependents to the independent. The biomass of root, stem, and leaf of the Tilia increased with growth space increase, with the exception of the 10 cm planting distance. Through path analysis, the contribution of belowground roots to the total growth is 0.236 1 0.286 9, that of stem and leaf is 0.732 5 0.775 8, which is 2.95 times of the former. The biomass between Tilia amurensis and Larix spp. differed significantly. The biomass of roots, stems and leaves of Larix spp. was approximately 2, 5, 4 times greater than those of the mixed Tilia amurensis. Through comparison of the direct path coefficient between mono-culture and mixed-culture experiment, we found that the competition ability of Tilia amurensis for underground water and nutrients was decreased by 36.84% and that for light and space was increased by 11.63% after mixed with Larix spp. The influence of the Larix spp. on Tilia amurensis increased with decrease in growth space. The influence from the
%K Tilia amuransis
%K Larix spp
%K Biomass allocation
%K Resource use
%K Competition<br>紫椴
%K 落叶松
%K 生物量分配
%K 资源利用
%K 竞争
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=2F2173CCFF292BF447DC2681EA33BBAE&aid=9292DB703F4DAB15&yid=C3ACC247184A22C1&vid=96C778EE049EE47D&iid=B31275AF3241DB2D&sid=2E4E3741E8FB64E9&eid=21A4BC96BDC43D33&journal_id=1005-264X&journal_name=植物生态学报&referenced_num=8&reference_num=22