森林与环境学报Issue(1)：86-91,6.DOI:10.13324/j.cnki.jfcf.2016.01.014
高山松与油松×云南松人工杂种损耗谱参数研究
Study on loss spectrum parameters in Pinus densata and artificial hybrid of P.tabuliormis×P.yun anensis
摘要
Abstract
In this study, artificial hybrid combinations of Pinus tabuliformis and P.yunnanensis, female multi-plant offspring mixed samples and male multi-plant offspring mixed samples, which were obtained from the natural distribution core area and edge area that could be representative population of P.tabuliformis and P.yunnanensis and P.densata from Linzhi, Tibet, were selected to measure their electrical parameters, or loss coefficients.It showed that there existed significant variations among species and artificial hybrid combinations in loss parameters.Spectrum models of species were constructed for loss through each spectral fitting of theirs. Loss coefficient spectral analysis of the species and artificial hybrid showed as follows.In 5-10 Hz, no significant differences occurred among species.Beyond 10 Hz, differences among P.tabuliformis, P.densata and hybrids were insignificant, and hybrid curve almost coincided with the trend of P.tabuliformis, highlighting the strong maternal effect.P.densata and P.yunnanensis moved on an opposite trend, with P.densata being concave, while P.tabuliformis convex, which might be marked out on the inconsistencies between the two loss mechanisms, or vice versa.When over 15 Hz, the loss coefficient of P.densata was the smallest, reflecting its transgressive characteristics for minimum energy consumption.Loss was associated with indices and adaptability of seedling growth, with the coefficient reaching a significant level, and it was closely related to experimental environment factors such as longitude, altitude, annual average temperature and precipitation.The finding also indicated that the loss had a significant positive correlation with wintering mortality, the height, crown, and mortality of biennial seedlings, and significant negative correlation with biennial survival and biennial cap rate.关键词
高山松/云南松/油松/人工杂种/损耗Key words
Pinus densata Masters/P.yunnanensis Faranch/P.tabuliormis Carrière/artificial hybrid/loss coefficient分类
农业科技引用本文复制引用
马凤翔,陈晓阳,李悦..高山松与油松×云南松人工杂种损耗谱参数研究[J].森林与环境学报,2016,(1):86-91,6.基金项目
国家自然科学基金项目“高海拔生境油松、云南松、高山松种群及种间杂种适应性研究”（31070591）。 （）
