2000-2015年北极地区植被物候数据

植被物候是不同植被现象年复一年重现的时序节点，是植被长期适应环境季节性变化的结果。其不仅是气候变化的重要感应器，在调控生态系统结构和功能变化中还扮演着重要的角色。该数据集为北极地区（60°N以北）2001-2021年的物候数据，为MODIS MCD12Q2 v6.1产品。物候信息包括返青（Greenup）、返青中期（MidGreenup）、成熟（Maturity）、峰值（Peak）、衰老（Senescence）、衰老中期（MidGreendown）和休眠（Dormancy）7个物候期。物候是基于MODIS EVI2数据，采用动态阈值法提取。物候单位为距离1970年1月1日的天数。数据集坐标转换为WGS84，空间分辨率为0.0042°。Vegetation phenology refers to the sequential timing of recurring vegetation phenomena across annual cycles, which arises from the long-term adaptation of vegetation to seasonal environmental fluctuations. It not only serves as a critical indicator of climate change, but also plays a vital role in regulating changes in the structure and function of ecosystems. This phenology dataset covers the Arctic region (north of 60°N) spanning 2001 to 2021, sourced from the MODIS MCD12Q2 v6.1 product. The phenological metrics include seven key stages: Greenup, MidGreenup, Maturity, Peak, Senescence, MidGreendown, and Dormancy. These metrics were extracted using the dynamic threshold method based on MODIS EVI2 data. The unit of phenological dates is the number of days elapsed since January 1, 1970. The dataset adopts the WGS84 coordinate system, with a spatial resolution of 0.0042°.

搜集汇总

背景与挑战

背景概述

该数据集为北极地区（60°N以北）2001-2021年的植被物候数据，基于MODIS MCD12Q2 v6.1产品，包含返青、峰值等7个物候期，采用动态阈值法从EVI2数据提取。数据为GeoTiff栅格格式，空间分辨率0.0042°，时间分辨率为年，适用于气候变化和生态系统研究。