中国典型生态系统生态站2001-2015年≥10℃积温数据集

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

热量资源是自然区域和自然带划分的重要依据,是农业生产的重要自然资源,通常以温度高低和积温多少来表征。10℃是喜温植物适宜生长的起始温度,也是喜凉作物迅速生长、多年生作物开始以较快速度积累干物质的温度。农业生产及科研部门以≥10℃积温及其相应的持续日数来衡量一个地区的农业气候生产潜力,并作为引种和耕作制度改革的重要依据。利用中国生态系统研究网络(CERN)生态站逐日平均气温数据,采用5日滑动平均法建立了典型生态系统生态站2001–2015年≥10℃积温数据集,包含了农田、森林、草地、荒漠、沼泽、湖泊和海湾等中国主要生态系统35个生态站2001–2015年≥10℃的活动积温、有效积温和持续日数,为开展全国或区域积温变化的趋势和规律研究提供了数据支撑。

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.