蒙古高原500 m分辨率植被物候及变化趋势数据集(2001-2019年)  

A dataset of vegetation phenology and change trends with a resolution of 500m of on the Mongolian Plateau(2001-2019)

作　　者：张寅飞 杨雅萍[2,3,4] 乐夏芳 徐洋[3,5] ZHANG Yinfei;YANG Yaping;Yue Xiafang;XU Yang(Capital Normal University,Beijing 100048,P.R.China;State Key Laboratory of Resources and Environmental Information System,Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences(CAS),Beijing 100101,P.R.China;National Earth System Science Data Center,National Science&Technology Infrastructure of China,Beijing 100101,P.R.China;Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application,Nanjing 210023,P.R.China;College of Geography and Environmental Science,Henan University,Kaifeng 475004,P.R.China)

机构地区：[1]首都师范大学,北京100048 [2]中国科学院地理科学与资源研究所,资源与环境信息系统国家重点实验室,北京100101 [3]国家科技资源共享服务平台国家地球系统科学数据中心,北京100101 [4]江苏省地理信息资源开发与利用协同创新中心,南京210023 [5]河南大学地理与环境学院,河南开封475004

出　　处：《中国科学数据（中英文网络版）》2023年第1期23-36,共14页China Scientific Data

基　　金：蒙古高原资源环境要素综合考察(2019FY102001);中国科学院网络安全和信息化专项(CAS-WX2021SF-0106-03);国家科技基础条件平台建设项目“地球系统科学数据共享网”(2005DKA32300);科学院数据中心(WX145XQ07-11)。

摘　　要：蒙古高原地处欧亚大陆中部,是典型的干旱半干旱地区,对气候变化高度敏感。植被物候是气候条件季节和年际变化最直观、最敏感的生物指示器,利用植被物候数据可以很好地对蒙古高原的生态情况、气候变化进行探究。本研究基于MODIS土地覆盖动态产品(MCD12Q2 C6),通过提取子数据集、镶嵌拼接、投影转换和裁剪等预处理操作,采用非参数Theil-Sen Median趋势分析与Mann-Kendall显著性检验方法,生成了2001-2019年蒙古高原500 m分辨率植被生长季开始时间、生长季结束时间、生长季节长度、生长峰值时间四个物候期以及变化趋势数据。本数据可反映蒙古高原19年植被物候期的时空变化情况,结合温度、降水等气候要素,可探究植被物候变化对环境要素的响应及其反馈机制,并可为植被变化分析、气候变化、碳循环等方面的研究提供数据支持。Located in the highland of Eurasia,the Mongolian Plateau,a typical arid and semi-arid region,is highly sensitive to climate change.Vegetation phenology is the most intuitive and sensitive biological indicator of seasonal and interannual changes of climatic conditions.Vegetation phenology data can be used to explore the ecological situation and climate change of the Mongolian Plateau.Based on THE MODIS land cover Dynamic Product(MCD12Q2 C6),in this paper,we used non-parametric Theil-Sen Median trend analysis and Mann-Kendall significance test to extract sub-datasets,Mosaic,projection transformation and cropping.In this way,we obtained the data of four phenological periods(namely the beginning time,the end time,the length of the growing season and the peak time of the growing season)and the change trend data of vegetation of 500m resolution on the Mongolian Plateau from 2001 to 2019.This dataset can reflect the spatio-temporal changes of vegetation phenology in 19 years on the Mongolian Plateau.Combined with climate factors such as temperature and precipitation,it can be used to explore the response and feedback mechanism of vegetation phenology change to environmental factors,and provide data support for vegetation change analysis,climate change,carbon cycle and other studies.

关 键 词：蒙古高原 植被物候 时空分布 Theil-Sen Median趋势分析 Mann-Kendall显著性检验 MCD12Q2 2001-2019 

分 类 号：Q948[生物学—植物学]