Well preserved Early Cambrian small individual megascopic carbonaceous algal fossils have been found from the Chengjiang Biota. This paper deals with the new megascopic algal fossils in the Early Cambrian also from Ch...Well preserved Early Cambrian small individual megascopic carbonaceous algal fossils have been found from the Chengjiang Biota. This paper deals with the new megascopic algal fossils in the Early Cambrian also from Chengjiang Biota at Ercai Village, Haikou, Kunming, Yunnan, southwest China. Two new taxa, Longfengshania cordata sp. nov. and Plantulaformis sinensis gen. et sp. nov. are described here in detail. These new findings show that the Chengjiang Biota is high in species diversity of fossil algae and might offer new evidence for a better understanding of the Cambrian explosive biological evolution. Moreover, the fossils described here might belong to the megaalgal fossils according to detailed morphological study on the relationships of Longfengshania. Additionally, the occurrence of Longfengshania in the early Cambrian and the Neoproterozoic probably indicates a wide ecological tolerance and flexibility and apparently reflects its evolutionary conservation and a high degree of inherent genetic stability.展开更多
The paper deals with the new phaeophycean fossils in the Early Cambrian from Chengjiang Biota at Ercai Village of Haikou, Kunming, Yunnan, Southwest China. Three new taxa, Punctatiopsis latifolia gen. et sp. nov., P. ...The paper deals with the new phaeophycean fossils in the Early Cambrian from Chengjiang Biota at Ercai Village of Haikou, Kunming, Yunnan, Southwest China. Three new taxa, Punctatiopsis latifolia gen. et sp. nov., P. simplex gen. et sp. nov. and Vendotaenia cf. antiqua Gnilovskaya axe described here in detail. These new findings show that the Chengjiang Biota is high in species diversity of fossil algae and might offer new evidence for a better understanding of the Cambrian explosive biological evolution. The fossil genus described here is found to have a close relationship with the living Punctatia based on similar morphology. The results suggest that the Chengjiang Biota in Haikou area of Kunming was living in an intertidal and subtidal seawater environment.展开更多
Arcaded old streets are the historical witness of Haikou City transforming from an ancient town into the prosperous coastal commercial city,and they are the important content of international tourism island constructi...Arcaded old streets are the historical witness of Haikou City transforming from an ancient town into the prosperous coastal commercial city,and they are the important content of international tourism island construction.Although arcaded old streets are still the important hopping places for Haikou people,the crowded streets and backward and shabby residential and commercial conditions couldn't meet people's needs.The shopping environment without entertainment deviates from people's original shopping intention.The building facades,green space,public rest space and municipal facilities are less than satisfactory.The street landscape has gradually declined.So we must take restoration measures to protect them and create arcaded streets with local characteristics.For example,to restore the faade,dredge flowing space,create space for leisure,sort out all kinds of advertisement facilities,rebuild municipal facilities,add environmental facilities and so on.展开更多
Two new chordates, Cathaymyrus haikouensis Luo et Hu sp. nov. and Zhongxiniscus intermedius Luo et Hu gen. et sp. nov. are studied in this paper. Both display numerous S-shaped myomeres on their trunk. C. haikouensis ...Two new chordates, Cathaymyrus haikouensis Luo et Hu sp. nov. and Zhongxiniscus intermedius Luo et Hu gen. et sp. nov. are studied in this paper. Both display numerous S-shaped myomeres on their trunk. C. haikouensis shows a long and slim body similar to that of Cathaymyrus diadexus Shu et al., Zhongxiniscus approaches to Myllokunmingia and Haikouichthys in the dorsal fin, but differs in the myomeres. Zhongxiniscus may be the intermediate form between Cathaymyrus and Myllokunmingia and Haikouichthys.展开更多
Dissolved Cu, Ph, Zn and Cd in the Haikou Bay waters were measured to be respectively in the range concentrations of 0.47-1.16 μg/dm^3, 0. 94-- 2. 36μg/dm^3, 1.28-4.83 μg/dm^3 and 0. 005-0.072μg/dm^3; with respect...Dissolved Cu, Ph, Zn and Cd in the Haikou Bay waters were measured to be respectively in the range concentrations of 0.47-1.16 μg/dm^3, 0. 94-- 2. 36μg/dm^3, 1.28-4.83 μg/dm^3 and 0. 005-0.072μg/dm^3; with respectively average values of 0.78μg/dm^3, 1.36μg/dm^3, 3.14 g/dm^3 and 0. 03 μg/dm^3. Dissolved Cu and Zn concentrations are relatively high at the stations near the Longkun Road Outfall for domestic sewage, the Xiuying Outfall for industry waste water and the Haidian Island Estuary, but dissolved Pb and Cd concentrations are low in these stations. The values in Other stations are comparatively homogenous. Vertical dissolved Cu, Pb and Zn concentrations at the bottom layer are higher than at the surface layer, but dissolved Cd concentration appears to be on the opposite. The measurement results of Cu, Pb, Zn and Cd in suspended particle show that particulate matters in the Haikou Bay seawater play a role in purifying heavy metals. The study on strong complexed form and non-liable form of dissolved copper show that the ratio of strong complexed form and dissolved form is about 85%, and non-liable form is very low with a value lower than 5 nmol/dm^3. Therefore, copper in the Haikou Bay seawater cannot cause influence on marine organisms.展开更多
Water quality parameters such as pH, DO, COD, PQ4 - P, SiO3 - Si, NO2 - N, NO3 -N in the Haikou Bay were monitored respectively before and after Typhoon 9618 occurring on Sep. 18, 1996. Based on the statistics of typh...Water quality parameters such as pH, DO, COD, PQ4 - P, SiO3 - Si, NO2 - N, NO3 -N in the Haikou Bay were monitored respectively before and after Typhoon 9618 occurring on Sep. 18, 1996. Based on the statistics of typhoon in the Haikou Bay and numerical calculation of stormy current, the mechanism of water quality variation caused by typhoon is discussed. The typhoon impact on the Haikou Bay usually appears between July and November, most usually between August and October. The monitoring results before a typhoon were different from that. The stormy wave and windstorm cur-rent stir up the sediment in near-shore bottom and make the bottom water mix with the surface water strongly, specially windstorm current with strong velocity at the head of the bay stirs up higher pollutants sediment near sea area of sewage outfall, and heavy rain with typhoon carries the pollutants from land through the Nandu River to the Haikou Bay, so the contents of COD, PO4 - P, NO4 - N, NO3 ~N, SiO3 after a typhoon are higher than those before. Windstorm current is violent, which makes offshore high DO water exchange more frequently with inner bay water and oxygen in the air dissolves in sea water faster, so DO content after typhoon is higher than that before typhoon. This strong action of water exchange also causes lower pH change before and after the typhoon.展开更多
Using semidifferential stripping technique combined with pre-equilibrium complexometric titration, theabnormal phenomena appeared in determining apparent complexation capacity ( ACC) are discussed and the improvedmeth...Using semidifferential stripping technique combined with pre-equilibrium complexometric titration, theabnormal phenomena appeared in determining apparent complexation capacity ( ACC) are discussed and the improvedmethod for determinimg ACC is presented in the article. The accuracy of ACC measurement results is tested theoreti-cally and experimentally . Based on determination of ACC Cu, ACC Pb and ACC Cd, copper was selected for complexo-metric titration to determine ACC and the results are proved to be reasonable. ACC Cu measured in the Haikou Bay sur-face water is in the range of 166 . 4 ￣ 320 . 2 nmol/dm3, with the mean value of 240 . 9 nmol/dm3, the maximum valuearound domestic drainage outfall, and the values in other stations are comparatively homogenous. The condition forma-tion constant is in the range of 3 . 46 x 107 ￣ 4 . 76 x 108, and the mean value is 1 . 7 x 108 . Based on the 1 : 1 comlexingmodel of copper-natural organic ligand and the toxic concentration limit to marine organisms, seawater self-purificationcapacity in the Haikou Bay is calculated to be 7 . 43 ug/dm3 .展开更多
Landsat TM/ETM+ and Alos remote sensing data of the study area in 1991, 2001 and 2010 were interpreted by using object-oriented RS image extraction technology, landscape ecology theories were applied as well as GIS an...Landsat TM/ETM+ and Alos remote sensing data of the study area in 1991, 2001 and 2010 were interpreted by using object-oriented RS image extraction technology, landscape ecology theories were applied as well as GIS and FRAGSTATS4.1 to choose reasonable landscape indexes for studying temporal-spatial changes of suburban landscape layouts of Haikou City, exploring spatial features and change tendency of rural landscapes. According to the results, tropical garden landscapes have taken a dominant status in the last 2 decades; tropical farmland landscapes have had the most complicate shapes; tropical open forest landscapes have been most influenced by human interventions but had the best connectivity and high degree of concentration; tropical settlement landscapes and tropical meadow landscapes have been widely scattered with poor connectivity; landscape connectivity has been well maintained; contagion index has changed slightly, landscape equilibrium has been stable; landscape diversity has been maintained, all landscape types have been evenly distributed, landscape fragmentation has increased, and landscape heterogeneity has grown.展开更多
In winter of 2013,cold weather occurred in Kunming,and biennial E. dunnii and E. smithii in Haikou Forest Farm suffered different degrees of freezing damage. The freezing damage to them was analyzed here. The results ...In winter of 2013,cold weather occurred in Kunming,and biennial E. dunnii and E. smithii in Haikou Forest Farm suffered different degrees of freezing damage. The freezing damage to them was analyzed here. The results showed that in the families of E. dunnii,families suffering severe and especially severe freezing damage accounted for 7. 7%,while 92. 3% of families suffered moderate and below freezing damage; in the families of E. smithii,56. 7% of families suffered severe and especially severe freezing damage,while families suffering moderate and below freezing damage accounted for 43. 3%. There was significant difference between two species of eucalyptuses in tree height（ P 〈0. 05）,while there was extremely significant difference in freezing damage grade and index（ P 〈0. 01）. There was significantly negative correlation between the tree height and freezing damage grade of E. dunnii and E. smithii,with the correlation coefficients of- 0. 374 and- 0. 234. That is,the freezing damage grade would decrease with the increase of tree height.展开更多
Objective:Explore the influencing factors of Hyperuricemia(HUA)in natural people aged 35-74 in Haikou.Methods:Between June 2017 and December 2020,8754 different study subjects aged 35-74 years were enrolled for the ba...Objective:Explore the influencing factors of Hyperuricemia(HUA)in natural people aged 35-74 in Haikou.Methods:Between June 2017 and December 2020,8754 different study subjects aged 35-74 years were enrolled for the baseline survey at the physical examination center of a tri partite hospital in Haikou.Results:Overall detection rate of HUA was 18.5%,including 25.6%in male and 10.4%in female.HUA detection rates varied between the 35-45 and 46-55 age groups(P<0.05).The binary logistic results showed that high blood pressure,triglyceride,low density lipoprotein and creatinine were the risk factors of HUA(P<0.05).Conclusions:The baseline survey results show that the detection rate of HUA in a hospital in Haikou is relatively high.Men and groups with high blood pressure,creatinine,triglyceride and low-density lipoprotein should be the key groups for the early prevention and treatment of hyperuricemia(HUA).展开更多
The current situation about the natural forest resources protection project in Haikou Forest Farm of Kunming on the protection of forest resources, forest fire prevention, forest administration resource management, fo...The current situation about the natural forest resources protection project in Haikou Forest Farm of Kunming on the protection of forest resources, forest fire prevention, forest administration resource management, forest pests, and money management was briefed. Achievements made in the implementation of natural forest protection project in Haikou Forest Farm were analyzed, and problems existing in the project as well as corresponding countermeasures were expounded.展开更多
Nine field trips carried out in Haikou Forestry Farm,Yunnan Province,P.R.China resulted in 681 specimens of wood-decaying fungi.The present paper summarizes 52 species collected that are distributed in 37 genera,16 fa...Nine field trips carried out in Haikou Forestry Farm,Yunnan Province,P.R.China resulted in 681 specimens of wood-decaying fungi.The present paper summarizes 52 species collected that are distributed in 37 genera,16 families,6 orders including their hosts and substrates.A checklist of wood-decaying fungi in Haikou Forestry Farm is also given.Phylogenetic analysis of ITS nrRNA gene region was performed for all the collected samples with maximum likelihood,maximum parsimony and Bayesian inference methods.The phylogenetic tree showed that fifty-two species nested in sixteen families belonging to six orders in Agaricomycetes.展开更多
COTTON USA Cotton School 2010 was successfully held in Haikou,China,on 22nd and 23rd April 2010.The event received an overwhelming feedback from the industry and attracted more than 150 guests from the US and China to...COTTON USA Cotton School 2010 was successfully held in Haikou,China,on 22nd and 23rd April 2010.The event received an overwhelming feedback from the industry and attracted more than 150 guests from the US and China to attend.The representatives of Embassy of the United States of America,Agricultural Affairs Offices in Beijing and Guangzhou also took part in the school.展开更多
文摘Well preserved Early Cambrian small individual megascopic carbonaceous algal fossils have been found from the Chengjiang Biota. This paper deals with the new megascopic algal fossils in the Early Cambrian also from Chengjiang Biota at Ercai Village, Haikou, Kunming, Yunnan, southwest China. Two new taxa, Longfengshania cordata sp. nov. and Plantulaformis sinensis gen. et sp. nov. are described here in detail. These new findings show that the Chengjiang Biota is high in species diversity of fossil algae and might offer new evidence for a better understanding of the Cambrian explosive biological evolution. Moreover, the fossils described here might belong to the megaalgal fossils according to detailed morphological study on the relationships of Longfengshania. Additionally, the occurrence of Longfengshania in the early Cambrian and the Neoproterozoic probably indicates a wide ecological tolerance and flexibility and apparently reflects its evolutionary conservation and a high degree of inherent genetic stability.
文摘The paper deals with the new phaeophycean fossils in the Early Cambrian from Chengjiang Biota at Ercai Village of Haikou, Kunming, Yunnan, Southwest China. Three new taxa, Punctatiopsis latifolia gen. et sp. nov., P. simplex gen. et sp. nov. and Vendotaenia cf. antiqua Gnilovskaya axe described here in detail. These new findings show that the Chengjiang Biota is high in species diversity of fossil algae and might offer new evidence for a better understanding of the Cambrian explosive biological evolution. The fossil genus described here is found to have a close relationship with the living Punctatia based on similar morphology. The results suggest that the Chengjiang Biota in Haikou area of Kunming was living in an intertidal and subtidal seawater environment.
文摘Arcaded old streets are the historical witness of Haikou City transforming from an ancient town into the prosperous coastal commercial city,and they are the important content of international tourism island construction.Although arcaded old streets are still the important hopping places for Haikou people,the crowded streets and backward and shabby residential and commercial conditions couldn't meet people's needs.The shopping environment without entertainment deviates from people's original shopping intention.The building facades,green space,public rest space and municipal facilities are less than satisfactory.The street landscape has gradually declined.So we must take restoration measures to protect them and create arcaded streets with local characteristics.For example,to restore the faade,dredge flowing space,create space for leisure,sort out all kinds of advertisement facilities,rebuild municipal facilities,add environmental facilities and so on.
文摘Two new chordates, Cathaymyrus haikouensis Luo et Hu sp. nov. and Zhongxiniscus intermedius Luo et Hu gen. et sp. nov. are studied in this paper. Both display numerous S-shaped myomeres on their trunk. C. haikouensis shows a long and slim body similar to that of Cathaymyrus diadexus Shu et al., Zhongxiniscus approaches to Myllokunmingia and Haikouichthys in the dorsal fin, but differs in the myomeres. Zhongxiniscus may be the intermediate form between Cathaymyrus and Myllokunmingia and Haikouichthys.
基金supported financially by the National Natural Science Foundation of China under contrast No. 49466014
文摘Dissolved Cu, Ph, Zn and Cd in the Haikou Bay waters were measured to be respectively in the range concentrations of 0.47-1.16 μg/dm^3, 0. 94-- 2. 36μg/dm^3, 1.28-4.83 μg/dm^3 and 0. 005-0.072μg/dm^3; with respectively average values of 0.78μg/dm^3, 1.36μg/dm^3, 3.14 g/dm^3 and 0. 03 μg/dm^3. Dissolved Cu and Zn concentrations are relatively high at the stations near the Longkun Road Outfall for domestic sewage, the Xiuying Outfall for industry waste water and the Haidian Island Estuary, but dissolved Pb and Cd concentrations are low in these stations. The values in Other stations are comparatively homogenous. Vertical dissolved Cu, Pb and Zn concentrations at the bottom layer are higher than at the surface layer, but dissolved Cd concentration appears to be on the opposite. The measurement results of Cu, Pb, Zn and Cd in suspended particle show that particulate matters in the Haikou Bay seawater play a role in purifying heavy metals. The study on strong complexed form and non-liable form of dissolved copper show that the ratio of strong complexed form and dissolved form is about 85%, and non-liable form is very low with a value lower than 5 nmol/dm^3. Therefore, copper in the Haikou Bay seawater cannot cause influence on marine organisms.
基金This study was supported by the National Natural Science Foundation of China under contrast No. 49966001.
文摘Water quality parameters such as pH, DO, COD, PQ4 - P, SiO3 - Si, NO2 - N, NO3 -N in the Haikou Bay were monitored respectively before and after Typhoon 9618 occurring on Sep. 18, 1996. Based on the statistics of typhoon in the Haikou Bay and numerical calculation of stormy current, the mechanism of water quality variation caused by typhoon is discussed. The typhoon impact on the Haikou Bay usually appears between July and November, most usually between August and October. The monitoring results before a typhoon were different from that. The stormy wave and windstorm cur-rent stir up the sediment in near-shore bottom and make the bottom water mix with the surface water strongly, specially windstorm current with strong velocity at the head of the bay stirs up higher pollutants sediment near sea area of sewage outfall, and heavy rain with typhoon carries the pollutants from land through the Nandu River to the Haikou Bay, so the contents of COD, PO4 - P, NO4 - N, NO3 ~N, SiO3 after a typhoon are higher than those before. Windstorm current is violent, which makes offshore high DO water exchange more frequently with inner bay water and oxygen in the air dissolves in sea water faster, so DO content after typhoon is higher than that before typhoon. This strong action of water exchange also causes lower pH change before and after the typhoon.
文摘Using semidifferential stripping technique combined with pre-equilibrium complexometric titration, theabnormal phenomena appeared in determining apparent complexation capacity ( ACC) are discussed and the improvedmethod for determinimg ACC is presented in the article. The accuracy of ACC measurement results is tested theoreti-cally and experimentally . Based on determination of ACC Cu, ACC Pb and ACC Cd, copper was selected for complexo-metric titration to determine ACC and the results are proved to be reasonable. ACC Cu measured in the Haikou Bay sur-face water is in the range of 166 . 4 ￣ 320 . 2 nmol/dm3, with the mean value of 240 . 9 nmol/dm3, the maximum valuearound domestic drainage outfall, and the values in other stations are comparatively homogenous. The condition forma-tion constant is in the range of 3 . 46 x 107 ￣ 4 . 76 x 108, and the mean value is 1 . 7 x 108 . Based on the 1 : 1 comlexingmodel of copper-natural organic ligand and the toxic concentration limit to marine organisms, seawater self-purificationcapacity in the Haikou Bay is calculated to be 7 . 43 ug/dm3 .
基金Supported by Hainan Natural Science Foundation (80526, 411097)
文摘Landsat TM/ETM+ and Alos remote sensing data of the study area in 1991, 2001 and 2010 were interpreted by using object-oriented RS image extraction technology, landscape ecology theories were applied as well as GIS and FRAGSTATS4.1 to choose reasonable landscape indexes for studying temporal-spatial changes of suburban landscape layouts of Haikou City, exploring spatial features and change tendency of rural landscapes. According to the results, tropical garden landscapes have taken a dominant status in the last 2 decades; tropical farmland landscapes have had the most complicate shapes; tropical open forest landscapes have been most influenced by human interventions but had the best connectivity and high degree of concentration; tropical settlement landscapes and tropical meadow landscapes have been widely scattered with poor connectivity; landscape connectivity has been well maintained; contagion index has changed slightly, landscape equilibrium has been stable; landscape diversity has been maintained, all landscape types have been evenly distributed, landscape fragmentation has increased, and landscape heterogeneity has grown.
基金Supported by the Construction Project of Eucalyptus Germplasm Base in South China
文摘In winter of 2013,cold weather occurred in Kunming,and biennial E. dunnii and E. smithii in Haikou Forest Farm suffered different degrees of freezing damage. The freezing damage to them was analyzed here. The results showed that in the families of E. dunnii,families suffering severe and especially severe freezing damage accounted for 7. 7%,while 92. 3% of families suffered moderate and below freezing damage; in the families of E. smithii,56. 7% of families suffered severe and especially severe freezing damage,while families suffering moderate and below freezing damage accounted for 43. 3%. There was significant difference between two species of eucalyptuses in tree height（ P 〈0. 05）,while there was extremely significant difference in freezing damage grade and index（ P 〈0. 01）. There was significantly negative correlation between the tree height and freezing damage grade of E. dunnii and E. smithii,with the correlation coefficients of- 0. 374 and- 0. 234. That is,the freezing damage grade would decrease with the increase of tree height.
基金National Key R&D Program of China(No.2017YFC0907104)Hainan Provincial Medical and Health Scientific Research Project(No.20A200497)。
文摘Objective:Explore the influencing factors of Hyperuricemia(HUA)in natural people aged 35-74 in Haikou.Methods:Between June 2017 and December 2020,8754 different study subjects aged 35-74 years were enrolled for the baseline survey at the physical examination center of a tri partite hospital in Haikou.Results:Overall detection rate of HUA was 18.5%,including 25.6%in male and 10.4%in female.HUA detection rates varied between the 35-45 and 46-55 age groups(P<0.05).The binary logistic results showed that high blood pressure,triglyceride,low density lipoprotein and creatinine were the risk factors of HUA(P<0.05).Conclusions:The baseline survey results show that the detection rate of HUA in a hospital in Haikou is relatively high.Men and groups with high blood pressure,creatinine,triglyceride and low-density lipoprotein should be the key groups for the early prevention and treatment of hyperuricemia(HUA).
基金Sponsored by Science and Technology Projects of Kunming(2015-1-S-00643)
文摘The current situation about the natural forest resources protection project in Haikou Forest Farm of Kunming on the protection of forest resources, forest fire prevention, forest administration resource management, forest pests, and money management was briefed. Achievements made in the implementation of natural forest protection project in Haikou Forest Farm were analyzed, and problems existing in the project as well as corresponding countermeasures were expounded.
基金supported by the Yunnan Fundamental Research Project(Grant No.202001AS070043)the Science Foundation of Southwest Forestry University(Project No.111715).
文摘Nine field trips carried out in Haikou Forestry Farm,Yunnan Province,P.R.China resulted in 681 specimens of wood-decaying fungi.The present paper summarizes 52 species collected that are distributed in 37 genera,16 families,6 orders including their hosts and substrates.A checklist of wood-decaying fungi in Haikou Forestry Farm is also given.Phylogenetic analysis of ITS nrRNA gene region was performed for all the collected samples with maximum likelihood,maximum parsimony and Bayesian inference methods.The phylogenetic tree showed that fifty-two species nested in sixteen families belonging to six orders in Agaricomycetes.
文摘COTTON USA Cotton School 2010 was successfully held in Haikou,China,on 22nd and 23rd April 2010.The event received an overwhelming feedback from the industry and attracted more than 150 guests from the US and China to attend.The representatives of Embassy of the United States of America,Agricultural Affairs Offices in Beijing and Guangzhou also took part in the school.
