2019-2022年甘肃瓜州极旱荒漠生态系统碳水通量观测数据集  

A dataset of carbon and water fluxes in the extremely arid desert ecosystem in Guazhou County,Gansu Province(2019-2022)

作　　者：王颖[1,2,5] 姜艺凡 管超[1,2,5] 赵志光[2,4,5] 卢丹 马晓俊 张金贵 安文娟[3,5] 赵长明[1,2,3,5] WANG Ying;JIANG Yifan;GUAN Chao;ZHAO Zhiguang;LU Dan;MA Xiaojun;ZHANG Jingui;AN Wenjuan;ZHAO Changming(State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems,College of Ecology,Lanzhou University,Lanzhou 730000,P.R.China;Yuzhong Mountain Ecosystem Observation and Research Station,Lanzhou University,Lanzhou 730000,P.R.China;Management Center of Scientific Observing Station,Lanzhou University,Lanzhou 730000,P.R.China;School of Life Sciences,Lanzhou University,Lanzhou 730000,P.R.China;Lanzhou University,Gansu Provincial Climate Change Science Data Center,Lanzhou 730000,P.R.China)

机构地区：[1]兰州大学生态学院,草种创新与草地农业生态系统全国重点实验室,兰州730000 [2]兰州大学榆中山地生态系统野外科学观测研究站,兰州730000 [3]兰州大学科学观测台站管理中心,兰州730000 [4]兰州大学生命科学学院,兰州730000 [5]兰州大学,甘肃省气候变化科学数据中心,兰州730000

出　　处：《中国科学数据（中英文网络版）》2024年第3期184-195,共12页China Scientific Data

基　　金：国家重点研发计划(2021YFF0703904);兰州大学中央高校基本科研业务费专项(lzujbky-2023-eyt01)。

摘　　要：极旱荒漠生态系统通常位于干旱地区,降水量较低并伴有高温现象,其原生植被具有较高适应性,是极端环境条件下的特殊生态系统类型。极旱荒漠生态系统在帮助保持土壤稳定性、防止土壤侵蚀、维持独特生物多样性等方面发挥着一定作用,在全球生态系统中具有独特而重要的地位。了解中国西北极旱荒漠生态系统碳水通量特征对于研究极旱荒漠生态系统在全球碳水循环中的作用具有重要意义。本数据集为甘肃瓜州极旱荒漠生态系统野外科学观测研究站(以下简称瓜州站)所收集的2019年1月1日至2022年12月31日的日尺度碳水通量观测数据集。采用涡动相关通量观测技术对该生态系统碳水通量进行野外观测,使用ChinaFLUX数据处理技术标准对原始数据进行校正、质量控制和数据插补最终形成日尺度数据集。本数据集包括净生态系统碳交换量(NEE)、生态系统总初级生产力(GPP)、生态系统呼吸(ER)、水通量(FH2O)、土壤热通量(SHF)、蒸散发(ET)、显热通量(H)、潜热通量(LE)和太阳辐射(R_(g))、气温(T_(air))、露点温度(T_(dew))、土壤含水量(SWC)、光量子通量密度(PPFD)、相对湿度(RH)、饱和水汽压差(VPD)、降水(P)等关键气象环境观测数据。本数据集可为深入研究极旱荒漠生态系统在全球碳水循环中的作用与地位提供宝贵的数据基础。Extreme arid desert ecosystems are typically located in arid regions characterized by low precipitation and high temperatures.These ecosystems host native vegetation that exhibits remarkable adaptability to extreme environmental conditions.They play essential roles in maintaining soil stability,preventing erosion,and preserving unique biodiversity.Understanding the characteristics of carbon and water fluxes in extreme arid desert ecosystems,particularly in Northwest China,is crucial for assessing their contributions to the global carbon and water cycles.This dataset presents daily-scale carbon and water flux observations collected at Guazhou Station,a scientific observation site situated in the arid desert ecosystem of Gansu County,Gansu Province.The dataset covers the period from January 1,2019,to December 31,2022.Carbon and water fluxes were measured using eddy covariance flux observation techniques.The data underwent rigorous calibration,quality control,and interpolation processes following ChinaFLUX data processing standards,resulting in a finalized daily-scale dataset.The dataset includes key environmental meteorological observations,such as net ecosystem exchange(NEE),gross primary productivity(GPP),ecosystem respiration(ER),water flux(FH2O),soil heat flux(SHF),evapotranspiration(ET),sensible heat flux(H),latent heat flux(LE),as well as global radiation(R_(g)),air temperature(T_(air)),dew point temperature(T_(dew)),soil water content(SWC),photosynthetic photon flux density(PPFD),relative humidity(RH),vapor pressure deficit(VPD),precipitation(P),and more.This dataset offers valuable foundational information for in-depth research on the role and significance of extreme arid desert ecosystems in the global carbon and water cycles.It serves as a critical resource for scientific investigations and contributes to our understanding of these ecosystems’contributions to the Earth’s environmental dynamics.

关 键 词：涡度相关 极旱荒漠生态系统 通量观测 气象要素 碳水循环 

分 类 号：X171.1[环境科学与工程—环境科学]