文献类型：期刊文献

中文题名：基于冠层分区的辽东山区长白落叶松叶面积模拟研究

英文题名：Simulating Leaf Area for Larix Olgensis Based on Crown Partitions in Eastern Montane Region of Liaoning Province

作者：冯倩男[1] 刘常富[2,3] 罗洪斌[1]

第一作者：冯倩男

机构：[1]内蒙古自治区林业监测规划院;[2]沈阳农业大学林学院;[3]中国林业科学研究院森林生态环境与保护研究所

年份：2017

卷号：40

期号：3

起止页码：92-97

中文期刊名：内蒙古林业调查设计

外文期刊名：Inner Mongolia Forestry Investigation and Design

基金：国家自然科学基金项目(31270490)

语种：中文

中文关键词：长白落叶松;枝条叶面积;冠层分区;模拟

外文关键词：larix olgensis; branch leaf area; crown partitions; simulation

分类号：S791.22

摘要：文章以辽东山区长白落叶松林(Larix olgensis)为研究对象,通过调查树冠及枝条解析因子、实测叶面积,构建基于最优冠层分区形式的枝条叶面积模型,结果表明:基径(BD)是枝条叶面积(BLA)的最佳解释变量,相对冠层深度(H)0.67是模拟效果最优的冠层分区界限,树冠上层枝条叶面积最优模型为CAR模型:BLA=0.006BD1.746,决定系数(R2)为0.796,预估精度(P)达到90.61%;下层枝条叶面积最优模型为二次曲线:BLA=0.009BD2-0.476BD+7.186,决定系数(R2)为0.709,预估精度(P)达到80.65%。
According to investigating factors of tree crown and branch, measuring leaf area of Larix olgensis in Eastern Montane Region of Liaoning Province, the study built leaf area models of branch level based on the optimal crown partitions. The conclusions included： The base diameter was the optimal independent variable explaining leaf area of branch level. The boundary of crown partition of the optimal simulating effect was the relative crown depth of 0.67. The optimal model of branch leaf area in the upper crown was CAR model：, R^2=0.796, the accuracy of prediction was 90.61%;The optimal model of branch leaf area in the lower crown was Quadratic model： R^2=0.709, the accuracy of prediction was 80.65%.