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| 1 | Spatial dynamics of aboveground carbon stock in urban green space:a case study of Xi'an,China显示文摘Greenhouse gas emission of carbon dioxide(CO2) is one of the major factors causing global climate change.Urban green space plays a key role in regulating the global carbon cycle and reducing atmospheric CO2.Quantifying the carbon stock,distribution and change of urban green space is vital to understanding the role of urban green space in the urban environment.Remote sensing is a valuable and effective tool for monitoring and estimating aboveground carbon(AGC) stock in large areas.In the present study,different remotely-sensed vegetation indices(VIs) were used to develop a regression equation between VI and AGC stock of urban green space,and the best fit model was then used to estimate the AGC stock of urban green space within the beltways of Xi'an city for the years 2004 and 2010.A map of changes in the spatial distribution patterns of AGC stock was plotted and the possible causes of these changes were analyzed.Results showed that Normalized Difference Vegetation Index(NDVI) correlated moderately well with AGC stock in urban green space.The Difference Vegetation Index(DVI),Ratio Vegetation Index(RVI),Soil Adjusted Vegetation Index(SAVI),Modified Soil Adjusted Vegetation Index(MSAVI) and Renormalized Difference Vegetative Index(RDVI) were lower correlation coefficients than NDVI.The AGC stock in the urban green space of Xi'an in 2004 and 2010 was 73,843 and 126,621 t,respectively,with an average annual growth of 8,796 t and an average annual growth rate of 11.9%.The carbon densities in 2004 and 2010 were 1.62 and 2.77 t/hm2,respectively.Precipitation was not an important factor to influence the changes of AGC stock in the urban green space of Xi'an.Policy orientation,major ecological greening projects such as 'transplanting big trees into the city' and the World Horticultural Exposition were found to have an important impact on changes in the spatiotemporal patterns of AGC stock. | ZhengYang YAO JianJun LIU XiaoWen ZHAO DongFeng LONG Li WANG | 2015 | Journal of Arid Land2015，7，3： | 13 |
| 2 | A Case of New Variant COVID-19 First Emerging in South Africa Detected in a Security Guard at the Isolation Point—Shenzhen,China,January 23,2021显示文摘On January 22,2021,a 34-year-old male,who served as a security guard at the isolation point in Shenzhen,tested positive for coronavirus disease 2019(COVID-19)during the every-three-day routine test.After the nasopharyngeal swab was further confirmed as positive for COVID-19 by Shenzhen CDC,the patient was transferred to the Third People’s Hospital of Shenzhen and was diagnosed as a COVID-19 asymptomatic infection.On January 25,2021,Shenzhen CDC identified the 20H/501.Y.V2(B.1.351)variant,which was a variant of COVID-19 virus first emerging in the South Africa. | Jun Meng Shujiang Mei Long Chen Chunli Wu Shisong Fang Bo Peng Dongfeng Kong Xiaomin Zhang Linghong Xiong Yalan Huang Qiongcheng Chen Renli Zhang Yaqing He | 2021 | China CDC weekly2021，3，10： | 3 |
| 3 | Whole-Genome Sequences Analysis Displays Relationship of SARS-CoV-2 Delta Variant Between Four Local Cases and Passengers of a Flight from South Africa—Shenzhen City,Guangdong Province,China,June 2021显示文摘On June 14,2021,a customs officer(Case A)went to the infirmary at Baoan International Airport in Shenzhen due to a runny nose and fever.He was admitted to the Central Hospital of Baoan immediately.This patient preliminarily tested positive for coronavirus disease 2019(COVID-19)infection,caused by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),using a quantitative realtime reverse transcription polymerase chain reaction(qRT-PCR)method in this hospital.Then,a mixed specimen of nasopharyngeal swab. | Yaqing He Renli Zhang Qiuying Lyu Bo Peng Shujiang Mei Ying Sun Dongfeng Kong Chaoqiong Peng Ziquan Lyu Xinyi Wei Can Zhu Xiaoliang Xiao Shimin Li Qingju Lu Jiancheng Chen Hang Zhang Xuan Zou Tiejian Feng Long Chen | 2021 | China CDC weekly2021，3，50： | 3 |
| 4 | Development and characterization of polymorphic microsatellite markers in Linum usitatissimum显示文摘 | Xin Deng Songhua Long Dongfeng He Xiang Li Yufu Wang Jia Liu Xinbo Chen | 2010 | Journal of Plant Research2010，，1： | 1 |
| 5 | Preparation of magnesium hydroxide nanoflowers 显示文摘 | Yan Chenglin Xue Dongfeng Long Jiang | 2005 | Journal of Crystal Growth2005，282，3： | 1 |
| 6 | Preparation of magnesium hydroxide nanoflowers 显示文摘 | Yan Chenglin Xue Dongfeng Long Jiang | 2005 | Journal of Crystal Growth2005，282，34： | 1 |
| 7 | Genome Characterization of COVID-19 Lineage B.1.1.7 Detected in the First Six Patients of a Cluster Outbreak——Shenzhen City,Guangdong Province,China,May 2021显示文摘Screening for coronavirus disease 2019(COVID-19)virus,also known as SARS-CoV-2,infection every seven days was performed for high-risk populations who worked at the Yantian Port in Yantian District,Shenzhen City,Guangdong Province.On May 20,2021,an oropharyngeal swab from a 44-year-old male(Case A)tested preliminarily positive for COVID-19 by a quantitative real-time reverse transcription polymerase chain reaction(RT-qPCR)method in a third-party laboratory. | Yaqing He Peihua Niu Bo Peng Ying Sun Ziquan Lyu Renli Zhang Xiang Zhao Yang Song Yenan Feng Xiujuan Tang Dongfeng Kong Xinyi Wei Can Zhu Qingju Lu Shimin Li Xiaoliang Xiao Weiwen Liu Junjia He Junjie Xia Long Chen Xuan Zou Tiejian Feng | 2021 | China CDC weekly2021，3，25： | 0 |
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