摘要
以北部湾龟仙岛及其邻近区域为研究区,运用2018年无人机季节性航拍采集的影像数据,以及附近气象站点的降水、气温和太阳辐射等数据,引入了替代的可见光波段差异性植被指数VDVI,采用CASA模型估算植被净初级生产力,得到北部湾龟仙岛红树林生态系统NPP数据集(2018)。数据分析结果表明,不同季节植被NPP的空间差异明显,春-夏、夏-秋、秋-冬3个阶段NPP季节性增量百分比分别为203.67%、-39.06%和-75.16%,在龟仙岛红树林生态系统NPP的变化中,气温对NPP的影响比降水因素更加强烈。该数据集内容包括:(1)2018年北部湾龟仙岛红树林生态系统研究区景观图(.jpg);(2)2018年北部湾龟仙岛红树林生态系统研究区植被景观类型、VDVI植被指数、季节尺度和全年植被净初级生产力点数据(.shp)。该数据集存储为.jpg和.shp格式,共由9个数据文件组成,数据量为15.5 MB(压缩为1个文件,3.11 MB)。
Based on the image data collected by drone seasonal aerial photography in 2018,as well as precipitation,temperature and solar radiation data from nearby weather stations,this research focusing on study into the Guixian Island and its adjacent areas have obtained the NPP dataset of mangrove ecosystem in Guixian Island of Beibu Gulf through introducing alternative visible-band difference vegetation index(VDVI)and adopting Carnegie–Ames–Stanford Approach(CASA)model to estimate the net primary productivity of vegetation.The data analysis results show that the spatial differences of vegetation NPP in different seasons are obvious.The seasonal increase percentages of NPP in the three stages of spring to summer,summer to autumn,and autumn to winter are 203.67%,–39.06%and–75.16%,respectively.In the NPP changes of the Guixian Island mangrove ecosystem,temperature has a stronger influence on NPP than precipitation.The dataset includes:(1)Landscape map of mangrove ecosystem study area in Guixian Island,Beibu Gulf in 2018(.jpg).(2)Vegetation landscape types,VDVI vegetation index,seasonal scale and annual vegetation net primary productivity point data of mangrove ecosystem study area in Guixian Island,Beibu Gulf in 2018(.shp).The dataset is archived in.jpg and.shp format with a data size of 15.5 MB(compression to 1 file,3.11 MB).
作者
陶进
田义超
张强
周国清
韩鑫
张亚丽
Tao,J.;Tian,Y.C.;Zhang,Q.;Zhou,G.Q.;Han,X.;Zhang,Y.L.(School of Resources and Environment,Beibu Gulf University,Qinzhou 535011,China;Guangxi Key Laboratory for Geospatial Informatics and Geomatics Engineering,Guilin University of Technology,Guilin 541004,China)
出处
《全球变化数据学报（中英文）》
CSCD
2020年第4期370-379,370-379,共20页
Journal of Global Change Data & Discovery
基金
广西自然科学基金(2018JJA150135)
广西创新驱动发展专项(AA18118038)
广西基地和人才项目(2019AC20088)
北部湾大学(2019KYQD28)
作者简介
通讯作者:田义超,北部湾大学资源与环境学院,tianyichao1314@yeah.net
