文献类型：期刊文献

英文题名：Visual Simulation Research on Growth Polymorphism of Chinese Fir Stand Based on Different Comprehensive Grade Models of Spatial Structure Parameters

作者：Hu, Xingtao[1,2,3,4] Zhang, Huaiqing[1,3,4] Yang, Guangbin[2] Qiu, Hanqing[1,3,4] Lei, Kexin[1,3,4] Yang, Tingdong[1,3,4] Liu, Yang[1,3,4] Zuo, Yuanqing[1,3,4] Wang, Jiansen[1,3,4] Cui, Zeyu[1,3,4]

第一作者：Hu, Xingtao

通信作者：Zhang, HQ[1];Zhang, HQ[2];Zhang, HQ[3]

机构：[1]Chinese Acad Forestry, Inst Forest Resource Informat Tech, Beijing 100091, Peoples R China;[2]Guizhou Normal Univ, Sch Geog & Environm Sci, Guiyang 550025, Peoples R China;[3]NFGA, Key Lab Forest Management & Growth Modelling, Beijing 100091, Peoples R China;[4]Natl Long Term Sci Res Base Huangfengqiao Forest M, Beijing 100091, Peoples R China

年份：2023

卷号：14

期号：3

外文期刊名：FORESTS

收录：;EI(收录号：20231613894721);Scopus(收录号：2-s2.0-85152390543);WOS:【SCI-EXPANDED(收录号:WOS:000955814000001)】；

基金：This research was funded by the National Natural Science Foundation of China, grant number 32071681, 32271877 and the Foundation Research Funds of IFRIT, grant number CAFYBB2021ZE005, CAFYBB2019SZ004.

语种：英文

外文关键词：tree polymorphism; forest spatial structure grade; growth model; visual simulation; Cunninghamia lanceolata

摘要：Since tree morphological structure is strongly influenced by internal genetic and external environmental factors, accurate simulation of individual morphological-structural changes in trees is the premise of forest management and 3D simulation. However, existing studies have few descriptions, and the research on the impact of growth environments and stand spatial structures on tree morphological structure and growth is still limited. In our study, we constructed a comprehensive grade model of spatial structure (CGMSS) to comprehensively evaluate individual tree growth states of the stands and grade them from 0 to 10 correspondingly. In addition, we developed a Chinese fir morphological structure growth model based on CGMSS, and dynamically simulate the growth variations of Chinese fir stands. The results showed that the overall stand prediction accuracy of CGMSS-based Chinese fir diameter at breast height, tree height, crown width and under-living branch height growth models was more than 94%. According to the analysis of the comprehensive grade of spatial structure (CGSS) of trees in the stand, except for the prediction accuracy and systematic error of the under-living branch height growth model at the CGSS = 3-5 levels, the systematic error of the Chinese fir growth model at each level was lower than 21.2%, and the prediction accuracy was greater than 73%. Compared with the spatial structural unit (SSU)-based Chinese fir growth model proposed by Ma et al., all growth models fit better at all levels, except for the CGMSS-based Chinese fir tree height and under-living branch height growth models that fit significantly lower than the SSU-based Chinese fir growth model at CGSS = 3-5 levels. In this study, the main conclusion is that the simulation results of CGMSS's Chinese fir morphological structure growth model are closer to the real growth state of trees, achieving accurate simulation of differential growth of trees in different growth dominance degrees and spatial structure states in forest stands, making visualized forest management more effective and realistic.