干旱区生态环境知识资源中心(Arid): 中亚地区陆表物候逐年数据集(1982-2015)

Arid

	中亚地区陆表物候逐年数据集(1982-2015)
其他题名	Time Series of Land Surface Phenology Dataset in Central Asia (1982-2015)
	马勇刚; 刘素红
来源期刊	全球变化数据学报
ISSN	2096-3645
出版年	2020
卷号	4 期号:1 页码:31-37
中文摘要	中亚(30°N-60°N,50°E-100°E)为世界典型的干旱半干旱地区,研究该区域的植物物候变化对理解水分胁迫环境下地表植被对气候变化的响应具有重要意义。本数据集在GIMMS NDVI3g.v1长时间序列NDVI数据的基础上,利用阈值法和拐点法两种遥感物候提取方法对中亚地区1982-2015年共34年的地表植物物候信息进行提取。该数据集空间参考系统为地理坐标系,空间分辨率为0.083,3°,约8 km。数据集含有两个子集:在预先对时间序列进行逻辑函数拟合进行数据重构后,V1数据集为采用20%动态阈值法计算得到生长季的开始期、停止期和生长期长度,V2数据集为在采用拐点法计算得到生长季的开始期、停止期和生长期长度。V1数据集包含204个文件,数据格式为.hdr(头文件)和.img(数据文件);V2数据集包含204个文件,数据格式为.hdr(头文件)和.tif(数据)。本数据集包含2个文件夹共408个文件,数据量为126 MB(压缩为一个文件,数据量为75.6 MB)。
英文摘要	Central Asia (30°N-60°N, 50°E-100°E) is one of the arid and semi-arid regions of the world. It is extremely important to understand the response of surface vegetation to climate change under water stress. Based on a Global Inventory Monitoring and Modeling System (GIMMS) ndvi3g.v1 data, the threshold-based and inflexion-based methods were used to extract surface phenology data in Central Asia from 1982 to 2015. The spatial reference system was a geographic coordinate system at a spatial resolution of 0.083,3° (about 8 km). The dataset consisted of two groups of data files: Group V1 and Group V2. The processing of the Group V1 data file was as follows. First, the NDVI data were filtered and reconstructed by a double logistic function, and then the start of season (SOS), end of season (EOS), and length of season (LOS) were calculated by a 20% dynamic threshold method. The Group V2 data file was developed by reconstructing the NDVI time series data using a series of piece wise logistic functions, and then the SOS, EOS, and LOS were calculated by the inflexion-based method. The dataset was archived in.hdr,.img and.tif formats in 408 data files, with a data size of 126 MB (compressed to 75.6 MB in one file).
中文关键词	陆表物候 ; 遥感 ; 中亚
英文关键词	land surface phenology remote sensing Central Asia 1982-2015
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Plant Sciences
CSCD记录号	CSCD:6914880
来源机构	新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353714
作者单位	马勇刚, 新疆大学资源与环境科学学院, 乌鲁木齐, 新疆 830046, 中国.; 刘素红, 新疆大学资源与环境科学学院, 乌鲁木齐, 新疆 830046, 中国.
推荐引用方式 GB/T 7714	马勇刚,刘素红. 中亚地区陆表物候逐年数据集(1982-2015)[J]. 新疆大学,2020,4(1):31-37.
APA	马勇刚,&刘素红.(2020).中亚地区陆表物候逐年数据集(1982-2015).全球变化数据学报,4(1),31-37.
MLA	马勇刚,et al."中亚地区陆表物候逐年数据集(1982-2015)".全球变化数据学报 4.1(2020):31-37.