买吾拉夏·木巴热克;玉米提·哈力克;艾萨迪拉·玉苏甫;阿依加马力·克然木;

• 1:新疆大学资源与环境科学学院绿洲生态教育部重点实验室

摘要(Abstract)：

林窗是森林生态系统中普遍存在的小尺度干扰类型,也是森林更新与演替的主要驱动力.快速、准确地测定林窗边缘木参数及其动态是林窗研究中的一大难点.传统的人工树木监测耗时、耗力、耗费,受立地条件和测树者的主观影响,很难保证测量数据的精度.本研究利用地面激光雷达扫描技术,对塔里木河中游天然胡杨林林窗进行扫描,获得其边缘木树高、胸径、冠径、树冠面积、树冠体积等相关参数,并对其做相关性分析与检验,获得以下结果:(1)地面激光雷达所获取的点云数据与手测数据差异极小,胸径、树高、冠径提取拟合度R2分别为0.97、0.93和0.81,其中激光雷达所获得的树高数据精度更高;(2)塔里木河中游天然胡杨林林窗边缘木胸径与树高、冠径、树冠体积之间成正相关关系,其拟合值分别为0.64、0.68和0.69;(3)胡杨树高与树冠体积、树冠面积成正相关关系,胸径大小对树冠的影响比树高更明显;(4)利用激光雷达可以更便捷的获得林窗点云数据且不易受树林窗形状无规则性的影响.

关键词(KeyWords)： 地面激光雷达;林窗;边缘木;胡杨;塔里木河

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目（31860134;U1703102）

作者(Authors): 买吾拉夏·木巴热克;玉米提·哈力克;艾萨迪拉·玉苏甫;阿依加马力·克然木;

DOI: 10.13568/j.cnki.651094.651316.2019.12.31.0002

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