2013-2020年中国典型生态系统大气硅湿沉降数据集

A dataset of atmospheric silicon wet deposition in China’s terrestrial ecosystems(2013–2020)

硅(Si)被认为是植物的“准必需”营养元素,也是一些浮游植物的必需营养素。大气沉降逐渐成为硅营养物质进入生态系统的重要补充方式。目前尚未有关于大气硅沉降的全国性观测数据报道。2013年,以中国科学院生态系统研究网络(CERN)和全国各台站为依托,建立了中国区域典型陆地生态系统大气湿沉降观测网络(China Wet Deposition Observation Network,ChinaWD)。观测网络从2013年持续至今,包括全国43个站点。这些站点较为均匀地分布在每个生态区,几乎涵盖了中国主要的生态系统类型。本数据集重点汇编和整理了ChinaWD网络2013–2020年43个站点的大气硅湿沉降通量数据。ChinaWD观测网络具有严格的质量保证和质量控制规范。测试过程中使用标准的母液和空白样品进行测试和校正,采用重复处理以保证数据的准确性。所有相关参数均表明了测试结果的准确性和可靠性。本数据集弥补了区域硅沉降数据的不足,可以为后续区域、全国和全球硅生物地球化学循环研究提供数据支持;也为全面评价营养元素(氮、磷、硅)的比例特征及其生态效应提供了独特的科学数据。

As a"quasi essential"nutrient element for plants,Silicon(Si)serves as an essential nutrient for some phytoplankton.Atmospheric deposition has gradually become an important supplement way for silicon nutrients to enter the ecosystem.At present,there is no national observation data report on atmospheric silicon deposition.In 2013,China Wet Deposition Observation Network(ChinaWD)was established based on the Chinese Ecosystem Research Network(CERN)and stations across the country.Since 2013,the observation network has covered 43 stations nationwide.These stations are evenly distributed in various ecological regions,and almost cover the main types of ecosystems in China.This paper focuses on the compilation and collation of atmospheric silicon wet deposition flux data of 43 stations in ChinaWD network from 2013 to 2020.ChinaWD network boasts rigorous quality assurance and high quality control standards.We adopted standard solutions and blank samples for testing and calibration,and carried out repeated processing to ensure the accuracy of data.All the parameters indicate the high accuracy and reliability of test results.The dataset is expected to make up for the deficiency of regional silicon deposition data,provide data support for the follow-up regional,national and global silicon biogeochemical cycle research.Moreover,it can be used for reference to comprehensively evaluate the proportions and ecological effect of nutrient elements(nitrogen,phosphorus,silicon).