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| 1 | Two Ultraviolet Radiation Datasets that Cover China显示文摘Ultraviolet(UV) radiation has significant effects on ecosystems, environments, and human health, as well as atmospheric processes and climate change. Two ultraviolet radiation datasets are described in this paper. One contains hourly observations of UV radiation measured at 40 Chinese Ecosystem Research Network stations from 2005 to 2015. CUV3 broadband radiometers were used to observe the UV radiation, with an accuracy of 5%, which meets the World Meteorology Organization's measurement standards. The extremum method was used to control the quality of the measured datasets. The other dataset contains daily cumulative UV radiation estimates that were calculated using an all-sky estimation model combined with a hybrid model. The reconstructed daily UV radiation data span from 1961 to 2014. The mean absolute bias error and root-mean-square error are smaller than 30% at most stations, and most of the mean bias error values are negative, which indicates underestimation of the UV radiation intensity. These datasets can improve our basic knowledge of the spatial and temporal variations in UV radiation. Additionally, these datasets can be used in studies of potential ozone formation and atmospheric oxidation, as well as simulations of ecological processes. | Hui LIU Bo HU Yuesi WANG Guangren LIU Liqin TANG Dongsheng JI Yongfei BAI Weikai BAO Xin CHEN Yunming CHEN Weixin DING Xiaozeng HAN Fei HE Hui HUANG Zhenying HUANG Xinrong LI Yan LI Wenzhao LIU Luxiang LIN Zhu OUYANG Boqiang QIN Weijun SHEN Yanjun SHEN Hongxin SU Changchun SONG Bo SUN Song SUN Anzhi WANG Genxu WANG Huimin WANG Silong WANG Youshao WANG Wenxue WEI Ping XIE Zongqiang XIE Xiaoyuan YAN Fanjiang ZENG Fawei ZHANG Yangjian ZHANG Yiping ZHANG Chengyi ZHAO Wenzhi ZHAO Xueyong ZHAO Guoyi ZHOU Bo ZHU | 2017 | Advances in Atmospheric Sciences2017，34，7： | 2 |
| 2 | Propagation of various dark hollow beams in a turbulent atmosphere显示文摘 | Cai Yangjian He Sailing | 2006 | Opt Express2006，14，4： | 1 |
| 3 | Partially coherent flattened Gaussian beam and its paraxial propagation properties显示文摘 | Cai Yangjian He Sailing | 2006 | J Opt Soc Am A2006，23，10： | 1 |
| 4 | Propagation of various dark hollow beams in a turbulent atmosphere显示文摘 | Yangjian Cai Sailing He | 2006 | Opt Express2006，14，4： | 1 |
| 5 | Recent progress in electrospun nanofibers and their applications in heavy metal wastewater treatment显示文摘Novel adsorbents with a simple preparation process and large capacity for removing highly toxic and nondegradable heavy metals from water have drawn the attention of researchers.Electrospun nanofiber membranes usually have the advantages of large specific surface areas and high porosity and allowing flexible control and easy functionalization.These membranes show remarkable application potential in the field of heavy metal wastewater treatment.In this paper,the electrospinning technologies,process types,and the structures and types of nanofibers that can be prepared are reviewed,and the relationships among process,structure and properties are discussed.On one hand,based on the different components of electrospun nanofibers,the use of organic,inorganic and organic−inorganic nanofiber membrane adsorbents in heavy metal wastewater treatment are introduced,and their advantages and future development are summarized and prospected.On the other hand,based on the microstructure and overall structure of the nanofiber membrane,the recent progresses of electrospun functional membranes for heavy metal removal are reviewed,and the advantages of different structures for applications are concluded.Overall,this study lays the foundation for future research aiming to provide more novel structured adsorbents. | Xizi Xu He Lv Mingxin Zhang Menglong Wang Yangjian Zhou Yanan Liu Deng-Guang Yu | 2023 | Frontiers of Chemical Science and Engineering2023，17，3： | 1 |
| 6 | Propagation of a partially coherent twisted anisotropic Gaussian Schell-model bean: in a turbulent atmosphere显示文摘 | Cai Yangjian He Sailing | 2006 | Appl Phys Lett2006，89，04： | 1 |
| 7 | Influences of drought on the stability of an alpine meadow ecosystem显示文摘Drought plays a prominent role in affecting ecosystem stability and ecosystem productivity.Based on eddy covariance and climatic observations during 2012-2020,the Fisher discriminant analysis method was employed to accurately detect drought occurrences.Furthermore,the ecosystem water sensitivity and its resistance to drought were quantified to evaluate the ecosystem stability.The results showed that the alpine meadow suffered drought most frequently at the beginning of the growing seasons.However,drought during the peak growing seasons reduced the gross primary productivity(GPP)the most,by 30.5±15.2%.In the middle of the peak growing seasons,the ecosystem water sensitivity was weak,and thus,the resistance to drought was strong,which resulted in high ecosystem stability.At the beginning and end of the peak growing seasons,the ecosystem stability was relatively weak.Ecosystem stability was positively related to the corresponding multiyear average soil water content(SWC_(ave)).However,drought occurring during high SWC_(ave)periods led to larger reductions in GPP,which indicated that the inhibitory effects of drought on ecosystems were more dependent on the occurrence time of droughts than on ecosystem stability. | Tao Zhang Ximeng Ji Mingjie Xu Guang Zhao Zhoutao Zheng Yuanyuan Tang Ning Chen Juntao Zhu Yongtao He Yangjian Zhang | 2022 | Ecosystem Health and Sustainability2022，8，1： | 0 |
| 8 | Helcionelloids from the Cambrian Fortunian of the Northern Yangtze Platform,China显示文摘A study of the morphological and microstructural characteristics of helcionelloids from the Nanjiang area(north Sichuan,China)at the northern Yangtze Platform was undertaken,in order to understand their phylogenetic position.Helcionelloids fossils from the Kuanchuanpu Formation of the Changtanhe–Maolinzi section include 7 genera and 11 species.There are distinct differences in the degree of shell bending,the apical morphology and apex position,the outline of the aperture and the height of the shell,all of which constitute important identification features.Although helcionelloid apices exhibit varying degrees of rotation towards the aperture,they do not show any signs of evident distortion.A pair of basally-symmetrical muscle scars are discovered on the shells of helcionelloids(such as Bemella simplex),showing a distinct difference when compared with those of the stem-group gastropod(e.g.,Pelagiella).The prismatic shell layer of helcionelloids has been observed,which are common components in Cambrian molluscs,but differ significantly from the dense layer microstructure found in contemporary molluscs.The microstructures,muscle scars and morphological characteristics demonstrate that helcionelloids represent a stem-group of molluscs. | ZHANG Mengshao PANG Yanchun YANG Ben HE Yangjian LIANG Siyu HU Qiang LIN Li | 2023 | Acta Geologica Sinica(English Edition)2023，97，6： | 0 |
| 9 | 青藏高寒草甸生态系统碳交换年际变异主要受生物效应影响显示文摘位于西藏的高寒草甸生态系统具有敏感脆弱的特点,在全球气候变化背景下,其碳汇功能的变化受到了广泛的关注。因此,本研究旨在明确高寒草甸碳通量的年际变异特征,并进一步量化各驱动因素对碳通量变异的贡献。本研究基于7年(2012-2018)的碳通量与气象因子和生物因子数据,采用一组查表法(look-uptables,,LUTs)对高寒草甸碳通量的年际变异来源进行了拆分和量化,并进一步利用线性扰动分析法量化了各个关键因子对碳通量变异的贡献。2012-2018年,高寒草甸生态系统净生产力(net ecosystem productivity,NEP)、总初级生产力(gross primary productivity,GPP)和生态系统呼吸(ecosystem respiration,Re)多年平均值分别为3.31±26.90、210.18±48.35和206.88±28.45gCm^(-2)y^(-1),表现出了较大的年际变异。本研究通过区分和量化气象因子和生物因子对碳通量年际变异的贡献,发现了生物因子对年际变异的主控作用。此外,发现了气象因子和生物因子之间的负反馈作用。在气象因子中,只有土壤水分对年际变异的贡献相对较大,并在气象因子和生物因子的相互作用中发挥着调节作用。这些结果表明,在气候变化背景下,若要准确估算碳通量,需考虑生物因子的作用。 | Mingjie Xu Yi Sun Tao Zhang Yangjian Zhang Juntao Zhu Yongtao He Liwei Wang Guirui Yu | 2022 | Journal of Plant Ecology2022，15，5： | 0 |
| 10 | Fisher判别法在识别干旱中的应用--以高寒草甸生态系统为例显示文摘Fisher判别法可综合考虑事物的多重属性特征,进而分辨事物类型。若能将其应用于对干旱的识别,或将成为一种准确而有效的干旱识别方法。本研究以高寒草甸生态系统为研究对象,基于9年碳通量和小气候观测数据,以土壤含水量(soil water content,SWC)和饱和水汽压差(vapor pressure deficit,VPD)作为判别因子,利用Fisher判别法识别干旱。Fisher判别法可用于对高寒草甸生态系统干旱的识别。因其综合考虑了土壤水分匮缺和大气水分匮缺,故可以更合理准确地判断干旱的开始和结束时间。基于干旱早样本和非干旱样本的特征,构建判别方程为:y=24.46SWC-4.60VPD。当y>1时,样本点位于临界线上方,若持续10天以上,则判定为发生干早。两次干早过程间隔2天以内,可认为是一次干旱过程。随着研究年限的增加和观测数据的积累,该临界线方程尚有优化空间,其对干旱识别的准确度可进一步提高。 | Tao Zhang Ximeng Ji Yuanyuan Tang Mingjie Xu Yangjian Zhang Guang Zhao Ning Chen Juntao Zhu Yongtao He | 2022 | Journal of Plant Ecology2022，15，5： | 0 |
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