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沉积学报  2015 

压实作用下广西典型红树林区沉积速率及海平面上升对红树林迁移效应的制衡

DOI: 10.14027/j.cnki.cjxb.2015.03.013, PP. 551-560

Keywords: 红树林,沉积速率,压实作用,海平面上升,迁移

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Abstract:

气候变化造成的海平面上升是迫使红树林向陆迁移的主要驱动力,而其自身通过捕沙促淤不同程度的减缓了海平面上升速率的影响。基于广西典型红树林区8根短柱的210Pb测年和含水率分析,以考虑/未考虑沉积物压实作用为研究情景,通过对比研究红树林区潮滩地表高程抬升速率和相对海平面上升速率的大小关系,揭示当前海平面上升对广西红树林向陆/向海迁移的驱动机制。研究发现未考虑压实作用下的沉积速率约是考虑压实作用下沉积速率的1.00~1.34倍(平均1.12倍),压实作用明显;压实沉积速率介于0.16~0.78cm/a,其底层压实沉积速率与潮滩地表高程抬升速率相等。压实作用下,英罗湾和丹兜海红树林区的地表高程抬升速率小于相对海平面上升速率;与未考虑压实作用得到的结论相悖。由于广西红树林海岸大都建有防波堤,限制了红树林向陆的迁移;表明英罗湾和丹兜海的红树林正面临海平面上升的威胁。压实作用校正与否对地表高程抬升速率与相对海平面上升速率相当的区域尤为重要。

References

[1]  Alongi D M. The dynamics of benthic nutrient pools and fluxes in tropical mangrove forests [J]. Journal of Marine Research, 1996, 54(1):123-148.
[2]  Jennerjahn T C, Ittekkot V. Relevance of mangroves for the production and deposition of organic matter along tropical continental margins [J]. Naturwissenschaften, 2002, 89(1):23-30.
[3]  Woodroffe C. Mangrove sediments and geomorphology [M]//Robertson A I, Alongi D M. Tropical Mangrove Ecosystems. Washington, DC:American Geophysical Union, 1992:7-41.
[4]  Valiela I, Cole M L. Comparative evidence that salt marshes and mangroves may protect seagrass meadows from land-derived nitrogen loads [J]. Ecosystems, 2002, 5(1):92-102.
[5]  Valiela I, Bowen J L, York J K. Mangrove forests:one of the world's threatened major tropical environments [J]. BioScience, 2001, 51(10):807-815.
[6]  Lynch J C, Meriwether J R, McKee B A, et al. Recent accretion in mangrove ecosystems based on 137Cs and 210Pb [J]. Estuaries, 1989, 12(4):284-299.
[7]  仇晴川, 张乔民. 湿地地表高程变化的测量与研究[J]. 海洋地质动态, 2009, 25(11):15-20. [Qiu Qingchuan, Zhang Qiaomin. Measure and research of wetland elevation change [J]. Marine Geology Letters, 2009, 25(11):15-20.]
[8]  Kim G, Hussain N, Church T M, et al. The fallout isotope 207Bi in a Delaware salt marsh:a comparison with 210Pb and 137Cs as a geochronological tool [J]. Science of the Total Environment, 1997, 196(1):31-41.
[9]  Madsen A T, Murray A S, Andersen T J, et al. Optically stimulated luminescence dating of young estuarine sediments:a comparison with 210Pb and 137Cs dating [J]. Marine Geology, 2005, 214(1/2/3):251-268.
[10]  Xia Peng, Meng Xianwei, Yin Ping, et al. Eighty-year sedimentary record of heavy metal inputs in the intertidal sediments from the Nanliu River estuary, Beibu Gulf of South China Sea [J]. Environmental Pollution, 2011, 159(1):92-99.
[11]  叶崇开. 137Cs法和210Pb法对比研究鄱阳湖近代沉积速率[J]. 沉积学报, 1991, 9(1):106-114. [Ye Chongkai. Contrasting investigation by 137Cs method and 210Pb method for the present sedimentation rate of Poyang Lake, Jiangxi [J]. Acta Sedimentologica Sinica, 1991, 9(1):106-114.]
[12]  夏小明, 杨辉, 李炎, 等. 长江口—杭州湾毗连海区的现代沉积速率[J]. 沉积学报, 2004, 22(1):130-135. [Xia Xiaoming, Yang Hui, Li Yan, et al. Modern sedimentation rates in the contiguous sea area of Changjiang estuary and Hangzhou bay [J]. Acta Sedimentologica Sinica, 2004, 22(1):130-135.]
[13]  段凌云, 王张华, 李茂田, 等. 长江口沉积物210Pb分布及沉积环境解释[J]. 沉积学报, 2005, 23(3):514-522. [Duan Lingyun, Wang Zhanghua, Li Maotian, et al. 210Pb distribution of the Changjiang estuarine sediment and the implications to sedimentary environment [J]. Acta Sedimentologica Sinica, 2005, 23(3):514-522.]
[14]  夏鹏, 孟宪伟, 李珍, 等. 广西海岸带近百年来人类活动影响下环境演变的沉积记录[J]. 沉积学报, 2012, 30(2):325-332. [Xia Peng, Meng Xianwei, Li Zhen, et al. Sedimentary records of environmental evolution during the recent 100 years in the coastal zone of Guangxi province [J]. Acta Sedimentologica Sinica, 2012, 30(2):325-332.]
[15]  肖玉仲, 刘国贤, 杜瑞芝, 等. 江苏灌河口现代沉积速率的研究[J]. 海洋学报, 1997, 19(5):91-96. [Xiao Yuzhong, Liu Guoxian, Du Ruizhi, et al. Modern sedimentary rate in the Guanhe estuary of Jiangsu [J]. Acta Oceanologica Sinica, 1997, 19(5):91-96.]
[16]  全亚荣, 梁致荣, 刘彝筠, 等. 海口, 新海湾210Pb法沉积速率的测定[J]. 中山大学学报:自然科学版, 1995, 34(1):90-95. [Quan Yarong, Liang Zhirong, Liu Yijun, et al. The determination of depositional rate on the Haikou and Xinhai bays by 210Pb method [J]. Acta Scientiarum Naturalium Universitatis Sunyatseni, 1995, 34(1):90-95.]
[17]  李凤业, 宋金明, 李学刚, 等. 胶州湾现代沉积速率和沉积通量研究[J]. 海洋地质与第四纪地质, 2003, 23(4):29-33. [Li Fengye, Song Jinming, Li Xuegang, et al. Modern sedimentation rate and flux in the Jiaozhou Bay[J]. Marine Geology & Quaternary Geology, 2003, 23(4):29-33.]
[18]  张燕, 潘少明, 彭补拙. 用137Cs计年法确定湖泊沉积物沉积速率研究进展[J]. 地球科学进展, 2005, 20(6):671-678. [Zhang Yan, Pan Shaoming, Peng Buzhuo. An overview on the evaluation of sediment accumulation rate of lake by 137Cs dating [J]. Advances in Earth Science, 2005, 20(6):671-678.]
[19]  San Miguel E G, Bolívar J P, García-Tenorio R. Vertical distribution of Th-isotope ratios, 210Pb, 226Ra and 137Cs in sediment cores from an estuary affected by anthropogenic releases [J]. Science of the Total Environment, 2004, 318(1/2/3):143-157.
[20]  Bloesch J, Evans R D. Lead-210 dating of sediments compared with accumulation rates estimated by natural markers and measured with sediment traps [J]. Sediment/Freshwater Interaction Developments in Hydrobiology, 1982, 9:579-586.
[21]  Appleby P G, Oldfield F. The calculation of lead-210 dates assuming a constant rate of supply of unsupported 210Pb to the sediment [J]. Catena, 1978, 5(1):1-8.
[22]  IPCC. Climate change 2007:Synthesis report [R]//Core Writing Team, Pachauri R K, Reisinger A. Contribution of working groups I, II and III to the fourth assessment report of the intergovernmental panel on climate change. Geneva, Switzerland:IPCC, 2007:104.
[23]  国家海洋局. 2010年中国海平面公报[R]. 北京:海洋出版社, 2011:32. [State Oceanic Administration. 2010 China sea-level reports [R]. Beijing:China Ocean Press, 2011:32. ]
[24]  王雪, 罗新正. 海平面上升对广西珍珠港红树林分布的影响[J]. 烟台大学学报:自然科学与工程版, 2013, 26(3):225-230. [Wang Xue, Luo Xinzheng. Impact of sea level rise on mangrove distribution in Guangxi Pearl Harbor [J]. Journal of Yantai University:Natural Science and Engineering Edition, 2013, 26(3):225-230.]
[25]  Ellison J C, Stoddart D R. Mangrove ecosystem collapse during predicted sea-level rise:Holocene analogues and implications [J]. Journal of Coastal Research, 1991, 7(1):151-165.
[26]  Snedaker S C, Meeder J F, Ross M S, et al. Discussion of Ellison, Joanna C. and Stoddart, David R., 1991. Mangrove ecosystem collapse during predicted sea-level rise:Holocene analogues and implications. Journal of Coastal Research, 7(1):151-165 [J]. Journal of Coastal Research, 1994, 10(2):497-498.
[27]  Ellison J C. Long-term retrospection on mangrove development using sediment cores and pollen analysis:a review [J]. Aquatic Botany, 2008, 89(2):93-104.
[28]  张乔民, 温孝胜, 宋朝景, 等. 红树林潮滩沉积速率测量与研究[J]. 热带海洋, 1996, 15(4):57-62. [Zhang Qiaomin, Wen Xiaosheng, Song Chaojing, et al. The measurement and study on sedimentation rates in mangrove tidal flats [J]. Tropic Oceanology, 1996, 15(4):57-62.]
[29]  谭晓林, 张乔民. 红树林潮滩沉积速率及海平面上升对我国红树林的影响[J]. 海洋通报, 1997, 16(4):29-35. [Tan Xiaolin, Zhang Qiaomin. Mangrove beaches' accretion rate and effects of relative sea-level rise on mangroves in China [J]. Marine Science Bulletin, 1997, 16(4):29-35.]

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