A dataset of ≥10℃ accumulated temperature of field stations in Chinese typical ecosystems from 2001 to 2015

Thermal resources provide an important basis for the division of natural areas or belts, and are also an important natural resource for agricultural production. They are usually characterized by temperature and accumulated temperature. The study adopts 10°C as a threshold because this is the threshold temperature for the growth of thermophilic plants, a temperature at which chimonophilous crops grow rapidly and perennial crops accelerate its accumulation of dry matter. Agricultural departments and institutions often use the ≥10℃ accumulated temperature and its corresponding duration to measure the agro-climatic production potential of a region, which importantly guides the introduction and cultivation system reform. Based on the average daily temperature automatically observed by the Chinese Ecosystem Research Network (CERN), we used the 5-day moving average method to build a dataset of ≥10℃ accumulated temperature at field stations of typical Chinese ecosystems from 2001 to 2015. The dataset records the ≥10℃accumulated temperature, effective accumulated temperature and duration at 35 field stations of CERN that covers China’s major ecosystems of, for example, agriculture, forest, grassland, desert, wetland, lake and bay, which is expected to support research on accumulated temperature changes regionally or nationwide.

热量资源（thermal resources）既是划分自然区域与自然带的重要基础，亦是农业生产的重要自然资源，通常以气温与积温作为核心表征指标。本研究选取10℃作为阈值温度，原因在于该温度是喜温植物的生长临界温度：在此温度下，喜凉作物可快速生长，多年生作物亦会加快干物质积累进程。农业管理部门与科研机构常以≥10℃积温及其对应持续天数来衡量区域农业气候生产潜力，其对作物引种与种植制度改革具有重要指导意义。本研究基于中国生态系统研究网络（Chinese Ecosystem Research Network, CERN）自动观测的日平均气温数据，采用5日滑动平均法，构建了2001-2015年中国典型生态系统野外站的≥10℃积温数据集。该数据集记录了CERN旗下35个野外站的≥10℃积温、有效积温及持续天数，涵盖了我国农田、森林、草原、荒漠、湿地、湖泊及海湾等主要生态系统类型，可为区域乃至全国尺度的积温变化相关研究提供数据支撑。

搜集汇总

背景与挑战

背景概述

该数据集由中国科学院生态系统研究网络（CERN）发布，涵盖2001年至2015年中国35个典型生态系统野外站点的≥10℃积温数据，使用5日移动平均法计算。数据包括积温、有效积温和持续时间，旨在支持农业气候生产潜力评估和区域积温变化研究，适用于生物学和生态学领域。