论文部分内容阅读
混交林分结构与效应分析结果表明:混交林为明显的复层林结构,由于林冠的相互镶嵌,增加了林分密度与相对削度,从而提高了林分产量和材种出材量;混交林可增加空间利用层次,使生物量空间分布合理,并且,根系分布较深,大小根比例适宜;两树种混交在物质的吸收、积累和归还方面更为协调,从而保证了林分的稳产、高产;林分结构与红松生长关系密切,及时调整林分结构是保证持续稳定高产的技术关键;开敞度K值以0.9—1.1为适宜,在25—30 a生适宜保留密度为1400—1700株/ha。
The result of mixed forest structure and effect analysis shows that the mixed forest is the obvious multi-layer forest structure. Due to the mutual inlaying of canopy, the stand density and the relative taper are increased, Can increase the level of space utilization, so that the spatial distribution of biomass is reasonable, and the root distribution is deep, the size of the root ratio is appropriate; two species mixed in the absorption, accumulation and return of the material more coordinated, thus ensuring a stable yield, high yield . The stand structure is closely related to the growth of Korean pine. Timely adjustment of the stand structure is the key technology to ensure the sustained and stable high yield. The K value of the openness is 0.9-1.1, and the suitable storage density is from 1400-1700 Strain / ha.