Protected fruit cultivation in China has developed very quickly from the early 1990s, and now it is an important branch in fruit cultivation. A brief review including fruit species, developing history, growing area, o...Protected fruit cultivation in China has developed very quickly from the early 1990s, and now it is an important branch in fruit cultivation. A brief review including fruit species, developing history, growing area, output, and distribution in the whole country is made in the paper. Characteristics of the dominant kinds of greenhouse, environmental control methods, and standards of temperature, humidity, light and CO2 for different fruit species are presented. Information on varieties, growing benefits, special management practices and other aspects of the main fruit species used for protected cultivation are also presented.展开更多
This study documents the first two principal modes of interannual variability of midsummer precipitation over Northeast China (NEC) and their associated atmospheric circulation anomalies. It is shown that the first ...This study documents the first two principal modes of interannual variability of midsummer precipitation over Northeast China (NEC) and their associated atmospheric circulation anomalies. It is shown that the first principal mode exhibits the largest amount of variability in precipitation over the south of NEC (referred to as the south mode), whereas the second principal mode behaves with the greatest precipitation anomaly over the north of NEC (referred to as the north mode). Further findings reveal that, through modulating moisture transportation and upper- and lower-troposphere divergence circulation as well as vertical movement over NEC, the anomalous northwestern Pacific anticyclone and the anticyclone centered over northern NEC exert the dominant influence on the south and north modes, respectively. Additionally, it is quantitatively estimated that water vapor across the southern boundary of NEC dominates the moisture budget for the south mode, while the north mode has a close connection with moisture through NEC's northern and western boundal'ies. Furthermore, the north (south) mode is strongly related to the intensity (meridional shift) of the East Asian westerly jet.展开更多
Previous studies indicated that fruit bats carry two betacoronaviruses,BatCoV HKU9 and BatCoV GCCDC1.To investigate the epidemiology and genetic diversity of these coronaviruses,we conducted a longitudinal surveillanc...Previous studies indicated that fruit bats carry two betacoronaviruses,BatCoV HKU9 and BatCoV GCCDC1.To investigate the epidemiology and genetic diversity of these coronaviruses,we conducted a longitudinal surveillance in fruit bats in Yunnan province,China during 2009–2016.A total of 59(10.63%)bat samples were positive for the two betacorona-viruses,46(8.29%)for HKU9 and 13(2.34%)for GCCDC1,or closely related viruses.We identified a novel HKU9 strain,tentatively designated as BatCoV HKU9-2202,by sequencing the full-length genome.The BatCoV HKU9-2202 shared 83%nucleotide identity with other BatCoV HKU9 stains based on whole genome sequences.The most divergent region is in the spike protein,which only shares 68%amino acid identity with BatCoV HKU9.Quantitative PCR revealed that the intestine was the primary infection organ of BatCoV HKU9 and GCCDC1,but some HKU9 was also detected in the heart,kidney,and lung tissues of bats.This study highlights the importance of virus surveillance in natural reservoirs and emphasizes the need for preparedness against the potential spill-over of these viruses to local residents living near bat caves.展开更多
Fossil reproductive structure from the Eocene of the Changchang Basin (Hainan Island,South China) is recognized as Chaneya hainanensis sp.nov.This new species is characterized by persistent corolla of five obovate pet...Fossil reproductive structure from the Eocene of the Changchang Basin (Hainan Island,South China) is recognized as Chaneya hainanensis sp.nov.This new species is characterized by persistent corolla of five obovate petals with three subparallel primary venation linked by arching secondary veins,circular central disk bearing two orbicular ovaries or fruit bodies.This discovery confirms the presence of the extinct fruit genus Chaneya in low-latitude tropical area,providing significant fossil evidence for investigating the origin,migration,and phytogeography of this genus and discussing the Tertiary floristic exchanges among North America,eastern Asia,and Europe.Considering the distribution of this genus and its extant relatives and the climate changes during the Cenozoic,we hypothesize that Chaneya was a widespread tropical or subtropical taxon,but,with climate cooling,became extinct in northern latitudes and evolved into Picrasma (Simaroubaceae) and Rutaceae mainly in modern tropics and subtropics.展开更多
文摘Protected fruit cultivation in China has developed very quickly from the early 1990s, and now it is an important branch in fruit cultivation. A brief review including fruit species, developing history, growing area, output, and distribution in the whole country is made in the paper. Characteristics of the dominant kinds of greenhouse, environmental control methods, and standards of temperature, humidity, light and CO2 for different fruit species are presented. Information on varieties, growing benefits, special management practices and other aspects of the main fruit species used for protected cultivation are also presented.
基金supported by the National Key Research and Development Program of China (Grant No.2016YFA0600703)the National Natural Science Foundation of China (Grant No.41805046)+2 种基金the Natural Science Foundation of the Jiangsu Higher Education Institutions of China (Grant No.18KJB170013)the Startup Foundation for Introducing Talent of NUIST (Grant No.2243141701085)the funding of the Jiangsu Innovation and Entrepreneurship Team
文摘This study documents the first two principal modes of interannual variability of midsummer precipitation over Northeast China (NEC) and their associated atmospheric circulation anomalies. It is shown that the first principal mode exhibits the largest amount of variability in precipitation over the south of NEC (referred to as the south mode), whereas the second principal mode behaves with the greatest precipitation anomaly over the north of NEC (referred to as the north mode). Further findings reveal that, through modulating moisture transportation and upper- and lower-troposphere divergence circulation as well as vertical movement over NEC, the anomalous northwestern Pacific anticyclone and the anticyclone centered over northern NEC exert the dominant influence on the south and north modes, respectively. Additionally, it is quantitatively estimated that water vapor across the southern boundary of NEC dominates the moisture budget for the south mode, while the north mode has a close connection with moisture through NEC's northern and western boundal'ies. Furthermore, the north (south) mode is strongly related to the intensity (meridional shift) of the East Asian westerly jet.
基金supported by the China Natural Science Foundation (81290341 and 31621061 to ZLS)United States Agency for International Development Emerging Pandemic Threats PREDICT project (AID-OAA-A-14-00102)National Institute of Allergy and Infectious Diseases of the National Institutes of Health (Award Number R01AI110964)
文摘Previous studies indicated that fruit bats carry two betacoronaviruses,BatCoV HKU9 and BatCoV GCCDC1.To investigate the epidemiology and genetic diversity of these coronaviruses,we conducted a longitudinal surveillance in fruit bats in Yunnan province,China during 2009–2016.A total of 59(10.63%)bat samples were positive for the two betacorona-viruses,46(8.29%)for HKU9 and 13(2.34%)for GCCDC1,or closely related viruses.We identified a novel HKU9 strain,tentatively designated as BatCoV HKU9-2202,by sequencing the full-length genome.The BatCoV HKU9-2202 shared 83%nucleotide identity with other BatCoV HKU9 stains based on whole genome sequences.The most divergent region is in the spike protein,which only shares 68%amino acid identity with BatCoV HKU9.Quantitative PCR revealed that the intestine was the primary infection organ of BatCoV HKU9 and GCCDC1,but some HKU9 was also detected in the heart,kidney,and lung tissues of bats.This study highlights the importance of virus surveillance in natural reservoirs and emphasizes the need for preparedness against the potential spill-over of these viruses to local residents living near bat caves.
基金supported by National Natural Science Foundation of China (Grant Nos. 40972011,31070200)National Basic Research Program of China (973 Program) (Grant No. 2012CB822003)+2 种基金the joint Project of National Natural Science Foundation of China and Russian Foundation for Basic Research (Grant Nos. 41111120083,11-04-91175)Guangdong Natural Science Foundation (Grant No. 10151027501000020)Key Project of the Sun Yat-sen University for inviting foreign teachers and Scientific Research Fund, Hongda Zhang, Sun Yat-sen University
文摘Fossil reproductive structure from the Eocene of the Changchang Basin (Hainan Island,South China) is recognized as Chaneya hainanensis sp.nov.This new species is characterized by persistent corolla of five obovate petals with three subparallel primary venation linked by arching secondary veins,circular central disk bearing two orbicular ovaries or fruit bodies.This discovery confirms the presence of the extinct fruit genus Chaneya in low-latitude tropical area,providing significant fossil evidence for investigating the origin,migration,and phytogeography of this genus and discussing the Tertiary floristic exchanges among North America,eastern Asia,and Europe.Considering the distribution of this genus and its extant relatives and the climate changes during the Cenozoic,we hypothesize that Chaneya was a widespread tropical or subtropical taxon,but,with climate cooling,became extinct in northern latitudes and evolved into Picrasma (Simaroubaceae) and Rutaceae mainly in modern tropics and subtropics.