The response of sedimentary record to catchment changesinduced by human activities in the western intertidal flat ofYalu River Estuary, China
-
摘要: 对潮滩柱状沉积物粒度的垂向分布进行分析,结合流域水文资料和人类活动,可得出鸭绿江河口西岸潮滩沉积环境如何响应流域变化。可获取年份的水文资料显示:鸭绿江入海输沙量及径流量呈阶段性减小,可划分为1958-1970、1971-1990和1991-2009三个阶段,流域水库建设及植被覆盖率是其主控因素。1940-2010年间的柱状沉积物中敏感组分的变化可分为四个时期:1940-1950、1951-1980、1981-1990和1991-2010。潮滩沉积物的垂向粒径变化在1960-1980年间主要受流域植被覆盖率及水库建设控制,而1981-1990年间则与降雨量及土壤侵蚀强度直接相关。1990-2009年间入海径流量及输沙量的进一步减少,导致河口潮间带沉积物的粒径逐渐增大,及敏感组分中泥质成分含量的增加。Abstract: The response to the catchment changes of the sedimentary environment of the western intertidal flat of Yalu River Estuary was investigated by analyzing the vertical variations of the grain size of sediment cores, along with the hydrologic data and human activities in the catchment. The results demonstrated a stepwise decreasing trend for the variations of both the sediment load and water discharge into the sea, which could be divided into three stages as 1958-1970, 1971-1990 and 1991-2009. Reservoir construction and the changes of catchment vegetation coverage turned out to be the two predominant contributors to the changes. There are four periods for the variation of the sensitive components of the sediment cores from 1940 to 2010, i.e., 1940-1950, 1951-1980, 1981-1990 and 1991-2010. The vertical distribution of grain size in the cores mainly varied with the changes of vegetation coverage in the catchment and reservoir construction from 1960 to 1980, whereas it varied depending on the intensity of water and soil erosion in the catchment from 1980 to 1990. Despite the further reduction of the water and sediment input into the sea from 1990 to 2009, this period was characterized by coarsening trends for the grain size of sediment in the estuarine intertidal flat and correspondingly, the significantly increased silt contents of the sensitive component.
-
Key words:
- runoff and sediment load /
- human activities /
- sediment record /
- sensitive component /
- Yalu River /
-
Bakker M M, Govers G, Kosmas C, et al. 2005. Soil erosion as a driver of land-use change. Agriculture, Ecosystems and Environment, 105(3):467-481[DOI: 10.1016/j.agee.2004.07.009] Cheng Yan. 1988. Formation and evolution on geomorphology of Yalu River mouth and harbor construction. Coastal Engineering (in Chinese), 7(1):28-36 China Bays Compiling Committee. 1998. Chinese Harbours and Embayments (Volume 14):Important Estuaries (in Chinese). Beijing:China Ocean Press, 386-432 Editorial Committee of Liaoning Forest. 1990. Liaoning's Forest (in Chinese). Beijing:China Forestry Press, 22-30 Gao Jianhua, Gao Shu, Cheng Yan, et al. 2003. Sediment transport in Yalu River estuary. Chinese Geographical Science, 13(2):157-163[DOI: 10.1007/s11769-003-0010-y] Gao Jianhua, Gao Shu, Cheng Yan, et al. 2004. Formation of turbidity maxima in the Yalu River Estuary, China. Journal of Coastal Research, 43(SI):134-146 Gao Jianhua, Jia Jianjun, Kettner A J, et al. 2015a. Reservoir-induced changes to fluvial fluxes and their downstream impacts on sedimentary processes:the Changjiang (Yangtze) River, China. Quaternary International, doi: 10.1016/j.quaint.2015.03.015 Gao Jianhua, Jia Jianjun, Wang Yaping, et al. 2015b. Variations in quantity, composition and grain size of Changjiang sediment discharging into the sea in response to human activities. Hydrology and Earth System Sciences, 19(2):645-655[DOI: 10.5194/hess-19-645-2015] Gao Jianhua, Li Jun, Wang H, et al. 2012. Rapid changes of sediment dynamic processes in Yalu River Estuary under anthropogenic impacts. International Journal of Sediment Research, 27(1):37-49[DOI: 10.1016/S1001-6279(12)60014-6] Gao Shu, Wang Yaping, Gao Jianhua. 2011. Sediment retention at the Changjiang sub-aqueous delta over a 57 year period, in response to catchment changes. Estuarine, Coastal and Shelf Science, 95(1):29-38[DOI: 10.1016/j.ecss.2011.07.015] Gao Jianhua, Xu Xianan, Jia Jianjun, et al. 2015c. A numerical investigation of freshwater and sediment discharge variations of Poyang Lake catchment, China over the last 1000 years. The Holocene, 25(9):1470-1482[DOI: 10.1177/0959683615585843] Goldburg E D, Koide M. 1963. Rates of sediment accumulation in the Indian Ocean. In:Geiss J, Goldburg E D, eds. Earth Science and Meteoritics. Amsterdam:North-Holland Publishing Company, 90-102 Jia Jianjun, Gao Jianhua, Liu Yifei, et al. 2012. Environmental changes in Shamei Lagoon, Hainan Island, China:Interactions between natural processes and human activities. Journal of Asian Earth Sciences, 52:158-168[DOI: 10.1016/j.jseaes.2012.03.008] Jordan G, Van Rompaey A, Szilassi P, et al. 2005. Historical land use changes and their impact on sediment fluxes in the Balaton basin (Hungary). Agriculture, Ecosystems and Environment, 108(2):119-133[DOI: 10.1016/j.agee.2005.01.013] Mahmood K. 1987. Reservoir Sedimentation:Impact, Extent and Mitigation. Washington, DC:World Bank McCarney-Castle K, Voulgaris G, Kettner A J. 2010. Analysis of fluvial suspended sediment load contribution through Anthropocene History to the South Atlantic Bight Coastal Zone, U.S.A.. The Journal of Geology, 118(4):399-416[DOI: 10.1086/652658] McCarney-Castle K, Voulgaris G, Kettner A J, et al. 2012. Simulating fluvial fluxes in the Danube watershed:The ‘Little Ice Age’ versus modern day. The Holocene, 22(1):91-105[DOI: 10.1177/0959683611409778] McManus J. 1988. Grain size determination and interpretation. In:Tucker M, ed. Techniques in Sedimentology. Oxford:Black-Well, 63-85 Milliman J D, Farnsworth K L, Albertin C S. 1999. Flux and fate of fluvial sediments leaving large islands in the East Indies. Journal of Sea Research, 41(1-2):97-107[DOI: 10.1016/S1385-1101(98)00040-9] Milliman J D, Meade R H. 1983. World-wide delivery of river sediment to the oceans. The Journal of Geology, 91:1-21[DOI: 10.1086/628741] Milliman J D, Syvitski J P M. 1992. Geomorphic/tectonic control of sediment discharge to the ocean:the importance of small mountainous rivers. Journal of Geology, 100(5):525-544[DOI: 10.1086/629606] Poulos S E, Kapsimalis V, Tziavos C, et al. 2008. Origin and distribution of surface sediments and human impacts on recent sedimentary processes. The case of the Amvrakikos Gulf (NE Ionian Sea). Continental Shelf Research, 28(20):2736-2745 Song Enlai. 1997. The flood discharge of hydropower station dam on the Yalu River. Electric Technology of North East of China (in Chinese), 12:46-53 Song Shudong, Fu Weidong. 2008. Analysis for the water resources in the central and upstream Yalu River basin. Water Conservancy of Jinlin (in Chinese), 310(3):15-17 Syvitski J P M. 2003. Supply and flux of sediment along hydrological pathways:research for the 21st century. Global and Planetary Change, 39(1-2):1-11[DOI: 10.1016/S0921-8181(03)00008-0] Syvitski J P M. 2011. Global sediment fluxes to the Earth's coastal ocean. Applied Geochemistry, 26:S373-S374[DOI: 10.1016/j.apgeochem.2011.03.064] Syvitski J P M, Saito Y. 2007. Morphodynamics of deltas under the influence of humans. Global and Planetary Change, 57(3-4):261-282[DOI: 10.1016/j.gloplacha.2006.12.001] Syvitski J P M, Vörömarty C J, Kettner A J, et al. 2005. Impact of humans on the flux of terrestrial sediment to the global coastal ocean. Science, 308(5720):376-380[DOI: 10.1126/science.1109454] Szilassi P, Jordan G, Van Rompaey A, et al. 2006. Impacts of historical land use changes on erosion and agricultural soil properties in the Kali basin at Lake Balaton, Hungary. Catena, 68(2-3):96-108[DOI: 10.1016/j.catena.2006.03.010] Van Dessel W, van Rompaey A, Poelmans L, et al. 2008. Predicting land cover changes and their impact on the sediment influx in the Lake Balaton catchment. Landscape Ecology, 23(6):645-656[DOI: 10.1007/s10980-008-9227-6] Wang Xiaoying, Xie Yanbing, Jia Qingyu, et al. 2010. Evaluation of the carbon budget of Liaoning forest in recent 50 years. Journal of Anhui Agricultural Sciences (in Chinese), 38(8):4202-4204 Wang Yaping, Zhang Renshun, Gao Shu. 1999. Velocity variations in salt marsh creeks, Jiangsu, China. Journal of Coastal Research, 15(2):471-477 Yamamuro M, Kanai Y. 2005. A 200-year record of natural and anthropogenic changes in water quality from coastal lagoon sediments of Lake Shinji, Japan. Chemical Geology, 218(1-2):51-61[DOI: 10.1016/j.chemgeo.2005.01.021] Yin Zhaohan, Zhang Guoshu, Bu Rencang, et al. 2001. Analysis ecological environmental change in the middle and lower reaches of the Yalu River. Scientia Geographica Sinica (in Chinese), 21(6):544-548 Zhu Yunmei, Lu X X, Zhou Yue. 2008. Sediment flux sensitivity to climate change:A case study in the Longchuanjiang catchment of the upper Yangtze River, China. Global and Planetary Change, 60(3-4):429-442[DOI: 10.1016/j.gloplacha.2007.05.001]
点击查看大图
计量
- 文章访问数: 1174
- HTML全文浏览量: 43
- PDF下载量: 862
- 被引次数: 0