作　　者： ; ; ; ;

机构地区： 佛山科学技术学院生命科学学院

出　　处： 《北方园艺》 2011年第19期73-76,共4页

摘　　要： 利用半球面影像技术获取高山榕、小叶榕、蒲桃3种园林树种的LAI值,结合各个体树冠投影面积(S)和冠高(H),计算并比较3个绿量测算指标(LAI、LAI×S和LAI×S×H)。结果表明:LAI是绿量基本的测度单位,而LAI×S能够较合理地反映3种园林树种种间或种内的绿量差异,可以作为一个绿量的评估指标,以此估计3种园林树种的绿量为小叶榕>高山榕>蒲桃。LAI×S×H由于参数较多,容易造成误差,且其数据过于密集,不适宜用于绿量分析。随着半球面影像技术等无损性光学测量技术的发展,最终应用LAI估算绿色植物的绿量会是最可靠的方法。 Three green quantity indices,leaf area index（LAI）,LAI×S,LAI×S×H,of three landscape tree species were calculated and evaluated on the individual and population scale,with the LAI obtained by digital hemispherical photography technique and the canopy projection area（S）and canopy height（H）measured directly in the field.The results showed that LAI was a basic unit to estimate green quantity and the LAI×S was the most reliable index for reflecting both the interspecific and intraspecific variability of green quantity.The green quantity of three landscape tree species were estimated using the LAI×S,what was Ficus microcarpaFicus altissimaSyzygium jambos.The LAI×S×H was inadequate for green quantity analysis for involving comparatively too many interrelated factors,making the data over skew.Along with the development of harmless optics measure technology such as Hemispherical Photography,using the LAI to estimate green quantity would be a most dependable method in future.

关 键 词： 绿量 半球面影像技术 检验

领　　域： [农业科学]