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Temporal and vertical distribution of microphytobenthos biomass in mangrove sediments of Zhujiang (Pearl River) Estuary

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Acta Oceanologica Sinica 2013年第4期32卷 82-88页

作者： LIU Weiqiu ZHANG Jielong TIAN Guanghong XU Hualin YAN Xiaohua School of Life Sciences Sun Yat-sen University Management Office of Qi'ao-Dangan Provincial nature reserve guangdong neilingding-futian national nature reserve

Being a primary producer, Microphytobenthos （MPB） play an important role in the benthic ecosystem of mangrove swamps. The temporal and vertical distribution of MPB biomass, expressed as chlorophyll a （Chl a）, was investigated in mangrove swamps on the Qi＇ao island and the futian Mangrove nature reserve, guangdong Province, South China. Both locations are situated in the Zhujiang （Pearl River） Estuary. For each location, bi-monthly sampling was carried out at four sites during low tide period. Except one site on the Qi＇ao Island, which was in Phragrnites australis marsh, all sites were in mangrove swamps. The Chl a concentration in surface （0-1 cm） sediment ranged from 0.2/2g/cm3 to 8.3 #g/cm3 in the Qi＇ao Island and from 2.1/zg/cm3 to 15.6/2g/cm3 in the futian Mangrove reserve. The peak Chl a concentration occurred in winter or early spring, while the lowest Chl a concentration, with a value of about one quarter of the peak, was observed in summer or early autumn. The vertical distribution of Chl a concentration exhibited an exponential decline with depth, which indicated a muddy sediment with high organic matter, and the slope of the curve was positively related to Chl a concentration in the surface sediment. The MPB biomass of the Qi＇ao Island was significantly lower than that of the futian Mangrove reserve. Our results suggest that the overlaying water quality might influence the MPB biomass in surface sediments.

关键词： microphytobenthos mangrove biomass chlorophyll a vertical distribution

Seasonal Distribution of Meiofaunal Assemblages in the Mangrove Tidal Flat of futian,Shenzhen,China

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Journal of Ocean University of China 2022年第4期21卷 955-964页

作者： SONG Yuanliu YAN Cunjun GAO Chunzi XU Hualin HUA Er LIU Xiaoshou College of Marine Life Sciences Frontiers Science Center for Deep Ocean Multispheres and Earth SystemOcean University of ChinaQingdao 266003China Institute of Evolution and Marine Biodiversity Ocean University of ChinaQingdao 266003China guangdong neilingding-futian national reserve administration bureau Shenzhen 518040China

Meiofauna are fundamental components in mangrove ecosystem which play important roles in the energy flow and mat-ter *** order to reveal the spatio-temporal distribution of meiofaunal assemblages in mangrove habitats,sediment samples were collected in July(summer)and October(autumn)of 2013,January(winter)and April(spring)of 2014 in the mangrove tidal flat of futian,Shenzhen,China.A total of 14 meiofaunal taxa were identified,including free-living marine nematodes,benthic copepods,polychaetes,oligochaetes,ostracods,isopods,***,there were also undetermined *** showed that the abun-dance range of meiofauna was(488.35±71.29)-(5136.36±623.38)ind(10 cm)−*** nematodes were the most dominant group,with an average abundance of(1869.56±227.92)ind(10 cm)−2,accounting for 98.35%of the total abundance of *** sea-sonal distribution of meiofauna showed that the abundance was the highest in summer,followed by those in spring,winter,and *** distribution showed that meiofauna were mainly distributed in the upper sediment layer(0-5 cm),with a proportion of 89.56%.Correlation analysis between meiofauna and environmental factors showed that meiofaunal abundance and biomass had significantly negative correlation with *** analysis between meiofaunal assemblages and environmental factors show-ed that meiofaunal assemblages were affected by the combined effects of temperature,salinity,sediment median grain size,water content,and chlorophyll a content.

关键词： meiofauna taxa composition abundance mangrove tidal flat seasonal distribution

A comparison of species composition and stand structure between planted and natural mangrove forests in Shenzhen Bay,South China

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Journal of Plant Ecology 2010年第3期3卷 165-174页

作者： Zhongkui Luo Osbert Jianxin Sun Hualin Xu MOE Key Laboratory for Silviculture and Conservation and Institute of Forestry and Climate Change Research Beijing Forestry UniversityBeijing 100083China State Key Laboratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of SciencesBeijing 100093China neilingding-futian national nature reserve of guangdong Shenzhen 518040China

Aims For assisting faster restoration of damaged or severely disturbed coastal ecosystems,selected mangrove species have been planted on previously mangrove-inhabited sites of the tropical and subtropical coasts of southern *** objective of this study was to understand the stand dynamics of the planted mangroves and their functional traits in comparison with natural mangrove forests under similar site *** Species composition,stand density,tree size distribution,and aboveground production were investigated along three transects in a 50-year-old planted mangrove stand and three transects in an adjacent natural mangrove stand in Shenzhen Bay,South *** were made on tree distribution by species,stand structure,and aboveground biomass(AGB)*** were performed on the spatial patterns of tree size distribution and species *** Findings We found that the planted and natural mangrove stands did not differ in stand density,average diameter at breast height(DBH),species composition,and *** distribution of AGB and frequency at species level were also similar between the planted and natural ***,the traits in stand structure were more variable in the planted stand than in the natural stand,indicating higher spatiotemporal heterogeneity in the development and succession of planted *** analyses show that both DBH and AGB were spatially auto-correlated within a specific range in the direction perpendicular to *** than 60%of the variance in these attributes was due to spatial *** Ripley’s K-function analysis shows that the two dominant species,Kandelia obovata and Avicennia marina,clumped in broader scales in the natural stand than in the planted stand and displayed significant interspecific competition across the whole *** is suggested that interspecific competition interacts with spatial autocorrelation as the underlying mechanism shaping th

关键词： coastal ecosystem forest restoration mangroves spatial autocorrelation species association

Annotation on Mangrove Plants

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Marine Science Bulletin 2004年第2期6卷 83-89页

作者：王伯荪张炜银梁士楚昝启杰 School of Life Sciences Zhongshan University Institute of Forest Ecology and Environmental Protection Chinese Academy of Forestry Institute of Botany Chinese Academy of Sciences guangdong neilingding-futian national nature reserve administration

This paper reviews and discusses the technical terms and definition of mangrove and mangal, as well as mangrove plant. The word mangrove has been used to refer either to the constituent plant of tropical and subtropical intertidal community or to the community itself, but this usage makes more confusion. Being leaved mangrove in the more limited sense for the constituent plant species, mangal was proposed by MacNae (1968) as a term for mangrove community, which has been universally applied to most previous studies and should be adopted now. Mangrove should be therefore defined as a tropical and subtropical tree restricted to intertidal zones, which possesses some morphological specializion and physiological mechanism adapted to its habitat, and mangal as a tropical and subtropical forest community restricted to marine intertidal zones and periodically inundeated by the tides. A new term "consortive plant" is proposed here for herb, liana, epiphyte or parasite, which is restricted in the strict mangrove habitat.

关键词： mangrove mangrove plant true mangrove semi-mangrove mangal consortive plant mangal associates

Environmental remediation promotes the restoration of biodiversity in the Shenzhen Bay Estuary,South China

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Ecosystem Health and Sustainability 2022年第1期8卷 26-34页

作者： Hualin Xu Ke Liu Tianzhu Ning Gu Huang Qianmei Zhang Yuelin Li Mengqi Wang Yiming Fan Weili an Lingbo Ji Qinfeng Guo Hai Ren neilingding-futian national nature reserve administration bureau of guangdong ShenzhenChina Department of Ecology South China Botanical GardenChinese Academy of SciencesGuangzhouChina University of Chinese Academy of Sciences BeijingChina CSCEC Aecom Consultans Co. Ltd Shenzhen BranchShenzhenChina Core Botanical Gardens Chinese Academy of SciencesGuangzhouChina School of Physics and Optoelectronic Engineering Foshan UniversityFoshanChina Zhongkai College of Agricultural Technology GuangzhouChina Eastern Forest Environmental Threat Assessment Center USDA Forest ServiceRTPNCUSA

Background:Rapid urbanization has greatly changed land-use patterns in many estuarine areas around the world,including the guangdong-Hong Kong-Macao Greater Bay Area(GBA)resulting in serious water pollution and ecosystem *** City has conducted comprehensive ecological management and restoration in the Shenzhen Bay since *** natural vegetation consisting of mangroves,semi-mangroves,wetland plants,and terrestrial plants were restored from the bund to the inner bank of the Fengtang *** and sewage flow diversion systems were *** non-point source and point-source sewage are now treated in municipal sewage treatment plants,then naturally flow through the constructed wetland,and then through a natural wetland,restored natural embankment,and finally through mangrove communities substantially improving water ***:The restoration of the wetland has increased animal and microbial diversity and has supported the establishment of a complex and stable food *** water purification and habitat restoration,the number of alien invasive plants in the estuarine ecosystem has decreased,and the diversity of native species of birds,fish,macrobenthos,amphibians,and reptiles has ***:These improvements indicate that human beings and nature can coexist in support of the sustainable development of Shenzhen City.

关键词： Coastal city sewage treatment ecological restoration mangrove bird diversity

Identification of coastal wetlands of international importance for waterbirds:a review of China Coastal Waterbird Surveys 2005–2013

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Chinese Birds 2015年第3期6卷 153-168页

作者： Qingquan Bai Jianzhong Chen Zhihong Chen Guotai Dong Jiangtian Dong Wenxiao Dong Vivian Wing Kan Fu Yongxiang Han Gang Lu Jing Li Yang Liu Zhi Lin Derong Meng Jonathan Martinez Guanghui Ni Kai Shan Renjie Sun Suixing Tian Fengqin Wang Zhiwei Xu Yat-tung Yu Jin Yang Zhidong Yang Lin Zhang Ming Zhang Xiangwu Zeng Forestry bureau of Dandong Tianjin Birdwatching Society Xiamen Birdwatching Society Shenzhen Birdwatching Society Management Office of Guangdong Neilingding–Futian National Nature Reserve Shanghai Huaxia Wildlife Travel Limited The Hong Kong Bird Watching Society Xugou Primary School Kadoorie Conservation China Kadoorie Farm & Botanic Garden Corporation Spoon-billed Sandpipers in China State Key Laboratory of Biocontrol and College of Ecology and Evolution Xiamen Costal Wetlands and Birds Research Center Department of Life Science Cangzhou Normal University 14 bis rue des Temples45240 La FertéSaint AubinFrance Fujian Birdwatching Society Management Office of Yellow River Delta national nature reserve Guangxi Mangrove Research Center Tianjin Natural History Museum Shanghai Wildbird Society Panjin Birdwatching Society Panjin Maternal and Child Care Service Centre Haifeng nature reserve

Background:China's coastal wetlands belong to some of the most threatened ecosystems *** loss and degradation of these wetlands seriously threaten waterbirds that depend on ***:The China Coastal Waterbird Census was organized by volunteer birdwatchers in China's coastal *** were surveyed synchronously once every month at 14 sites,as well as irregularly at a further 18 sites,between September 2005 and December ***:A total of 75 species of waterbirds met the 1 % population level Ramsar listing criterion at least once at one *** number of birds of the following species accounted for over 20 % of the total flyway populations at a single site:Mute Swan(Cygnus olor),Siberia Crane(Grus leucogeranus),Far Eastern Oystercatcher(Haematopus osculans),Bar-tailed Godwit(Limosa lapponica),Spotted Greenshank(Tringa guttifer),Great Knot(Calidris tenuirostris),Spoon-billed Sandpiper(Calidris pygmeus),Saunders' s Gull(Larus saundersi),Relict Gull(Larus relictus),Great Cormorant(Phalacrocorax carbo),Eurasian Spoonbill(Platalea leucorodia),Black-faced Spoonbill(Platalea minor) and Dalmatian Pelican(Pelecanus crispus).A total of 26 sites supported at least one species of which their number met the1 % ***-two species met the 1 % criterion in the Yellow River Delta,Shandong;29 at the Cangzhou coast,Hebei and 26 species at the Lianyungang coast,***:The results highlight the international importance of China's coastal wetlands for *** study also demonstrates that participation of local birdwatchers in waterbird surveys results in data that are invaluable not only for understanding the current status of waterbirds in China's coastal regions but also for waterbird conservation and management.

关键词： 1 % criterion Citizen science Coastal wetlands Ramsar site Waterbirds

Effects of the Residues of Cuscuta campestris and Mikania micrantha on Subsequent Plant Germination and Early Growth

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Journal of Integrative Agriculture 2012年第11期11卷 1852-1860页

作者： LI Feng-lan LI Ming-guang ZAN Qi-jie GUO Qiang ZHANG Wei-yin WU Zhi WANG Yong-jun State Key Laboratory of Biocontrol Sun Yat-sen University Guangzhou 510275 P.R.China futian-CityU Mangrove Research & Development Centre Shenzhen 518040 P.R.China The Shenzhen Wild Animal Rescue Center Shenzhen 518000 P.R.China Office of Greening Committee of Shenzhen City Shenzhen 518048 P.R. China Laboratory of Forest Ecology and Environment State Forestry Administration Beijing 100714 P.R.China Institute of Forest Ecology Environment and Protection Chinese Academy of Forestry Beijing 100091 P.R.China guangdong neilingding-futian national nature reserve Shenzhen 518040 P.R. China

Cuscuta campestris, a dodder, can parasitize and suppress a scrambling herbaceous to semi-woody perennial vine, Mikania micrantha, one of the most destructive weeds in the world. To assess the effects of the mixed residue of C. campestris and M. micrantha on the subsequent plant community, we conducted a one-year experiment on the germination and seedling growth of subsequent plant community after the application of C. campestris. Seven treatments of varying proportions of C. campestris and M. mierantha residue on 21 subject trees and shrubs, which were commonly found in South China, resulted in a germination rate of 35.3% for all 8 715 seeds from 18 species, ranging from 5.7 to 81.9%; the remaining 3 species failed to germinate. ANOVA analysis showed that the residue did not affect the germination, growth, or mortality of the trees and shrubs. The germinated C. campestris seeds from the residue coiled the seedlings of most of the species, but less than 4% host death caused by C. campestris. In addition, the residue did not affect the germination of the herbaceous seedlings originating from the loam, and the similarity coefficients of the germinated seedlings between the treatments were very high. These results suggested that the residue had no negative impact on the germination and early seedling stages of the tree, shrub and grass species of the subsequent plant community. The use of C. campestris residue had a positive effect on the growth of M. micrantha, but it did not change the trend of M. micrantha being suppressed because re-parasitization occurred soon after the growth restarted. No negative effect was detected on the other species as a result of the parasitization of C. campestris or by the use of the mixed residue. This suggests that C. campestris is likely to be an effective and promising ecologically safe native herbaceous agent for controlling M. micrantha.

关键词： invasive species parasitic plant control subsequent community

Accumulation and Cycle of Heavy Metals in Sonneratia apetala and S. caseolaris Mangrove Community at futian of Shenzhen, China

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Marine Science Bulletin 2003年第1期5卷 59-68页

作者：王伯荪昝启杰张炜银王勇军 School of Life Sciences Zhongshan University Guangzhou 510275 School of Life Sciences Zhongshan University neilingding-futian national nature reserve of guangdong Shenzhen 518040 Institute of Forest Ecology Environment and Protection Chinese Academy of Forestry Beijing 100091

This paper reports the absorption, accumulation, distribution and cycle of Cu, Pb, Zn, Cr and Ni in S. apetala + S. caseolaris, mangrove community at futian Mangrove nature reserve of Shenzhen. The Cu, Pb, Zn, Cr and Ni contents in forest soil increase from bottom to surface layers, and the storage of the five heavy metals in the surface layer (depth 0 ~ 30 cm) is Zn > Pb > Ni > Cr > Cu. The concentration ability is S. caseolaris > S. apetala > K. candel. The existing accumulation of Cu, Pb, Zn, Cr and Ni in the community μis 23 019.63g/m2μ, 23 429.66g/m2μ, 117 870.42g/m2μ, 6 835.80g/m2μ, and 12 995.22g/m2μ, respectively. The annual absorption is 6 592.57g/m2μ, 2 664.80g/m2μ, 23 123.56g/m2μ, 853.24g/m2μ, and 1 990.95g/m2, respectively. The annual return is μ3 179.50g/m2μ, 1 300.65g/m2μ, 7 401.31g/m2μ, 398.99g/m2μ, and 646.20g/m2, respectively. The annual net retention accumulation of Cu, Pb, Zn, Cr and Ni in the community is 3 413.07μg/m2, 1 364.15μ g/m2, 15 722.25μg/m2, 454.25μg/m2, and μ1 344.75g/m2, respectively. The turn over periods of Cu, Pb, Zn, Cr and Ni are 8,19,15,18 and 21 years, respectively.

关键词： Sonneratia apetala S. caseolaris heavy metal accumulation cycle