2019-2021年黄土高原典型粮草复合生态系统日通量数据集  

A dataset of the daily flux in the typical grain and grass complex ecosystem on the Loess Plateau from 2019 to 2021

作　　者：马景永 赵长明[3] 张金贵 马晓俊 来兴发 沈禹颖[1,2] MA Jingyong;ZHAO Changming;ZHANG Jingui;MA Xiaojun;LAI Xingfa;SHEN Yuying(College of Pastoral Agriculture Science and Technology/State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems,Lanzhou University,Lanzhou 730000,P.R.China;National Field Scientific Observation and Research Station of Grassland Agro-Ecosystems,Qingyang 745000,P.R.China;Management Center for Scientific Observing Stations,Lanzhou University,Lanzhou 730000,P.R.China)

机构地区：[1]兰州大学,草地农业科技学院/兰州大学草种创新与草地农业生态系统全国重点实验室,兰州730000 [2]甘肃庆阳草地农业生态系统国家野外科学观测研究站,甘肃庆阳745000 [3]兰州大学,科学观测台站管理中心,兰州730000

出　　处：《中国科学数据（中英文网络版）》2023年第4期135-144,共10页China Scientific Data

基　　金：国家科技基础资源调查专项“农田与城市生态系统状况本底调查和数据集成”(2021FY100703);国家重点研发计划子课题“草地和荒漠生态系统数据智能管理、产品开发和挖掘应用”(2021YFF0703904);甘肃省科技计划项目(20CX9NA105)。

摘　　要：粮草复合生态系统作为黄土高原典型的生态系统类型,对维持区域粮食生产和畜牧业发展起着至关重要的作用。了解黄土高原粮草复合生态系统碳水交换和能量配分特征,对于理解黄土高原区域气候、碳水循环及其耦合过程具有非常重要的意义。本数据集为兰州大学甘肃庆阳草地农业生态系统国家野外科学观测研究站自2019年累计的日尺度碳水通量数据,时间覆盖范围为2019年1月至2021年12月,数据指标包括净生态系统CO_(2)交换量(NEE)、总生态系统生产力(GEP)、生态系统呼吸(RE)、蒸散发(ET)、潜热通量(H)、净辐射(Rn)和降雨量(P)等。研究生态系统为粮草复合生态系统,属黄土高原典型的农业生产类型,具有较强区域代表性。本数据集从野外观测、数据入库、质量控制到通量计算均严格按照国际通量观测技术标准进行,所获数据完整性好、质量高,数据可为黄土高原区域作物生产、水资源高效利用、碳源汇管理以及对全球气候变化的响应等研究方面提供数据基础。As a typical ecosystem type on the Loess Plateau,the grain and grass complex ecosystem plays a vital role in maintaining regional food production and animal husbandry development.Understanding the characteristics of carbon water flux and energy partitioning in the grain and grass complex ecosystem on the Loess Plateau is of great significance for understanding the regional climate,carbon water cycle and its coupling process on the Loess Plateau.The dataset contains the carbon and water flux data accumulated by the National Field Scientific Observation and Research Station of Qingyang Grassland Agricultural Ecosystem,Lanzhou University,from January 2019 to December 2021.The data indexes include net ecosystem exchannge(NEE)of CO_(2),total ecosystem productivity(GEP),ecosystem respiration(RE),evapotranspiration(ET),latent heat flux(H),net radiation(Rn),and rainfall(P).The studied ecosystem is a grain and grass complex ecosystem,which belongs to the typical agricultural production type of the Loess Plateau and has strong regional representation.The dataset was prepared in strict accordance with international flux observation technical standards from field observation,data warehousing,and quality control to flux calculation.The comprehensive and high-quality data in this dataset can provide a foundation for research on crop production,efficient use of water resources,carbon source and sink management,and response to global climate change in the Loess Plateau.

关 键 词：粮草复合生态系统 碳水通量 涡度相关 黄土高原 

分 类 号：S812[农业科学—草业科学]