沿海不同年限围垦区土壤剖面有机碳同位素与粒度特征——以江苏省东台市为例

doi:10.13249/j.cnki.sgs.2015.06.782

摘要/Abstract

摘要：

根据江苏沿海不同年限围垦区土壤剖面有机碳稳定同位素（δ¹³C）与粒度资料,研究了不同年限围垦区土壤粒度特征变化情况与有机质来源变化特征。结果表明,在气候和母质基本相同的条件下,土壤δ¹³C和粒度特征主要受围垦年限和人类活动干扰影响。随着围垦年限的增加,土壤平均粒径显著降低,表现为DT7(33.93 μm,林地,已围垦近60 a)Suaeda salsa）滩,已围垦2 a]。其中,DT6、DT7（30 cm以下）、DT1剖面粒度记录均具有自下向上逐渐变细的特点,粗颗粒组分逐渐减少,反映了粉砂淤泥质海岸围垦前原始潮滩沉积物的自然演化特点,DT7剖面30 cm以上逐渐变粗则可能主要由于已围垦近60 a里表层堆积了大量枯枝落叶所致。人类活动干扰在沉积记录中也较明显,DT6盐蒿滩剖面δ¹³C值总体上表现为海洋自生有机碳,主要反映原始沉积母质特征。DT1农用地剖面0~40 cm耕作层由于受开垦、翻耕、除草、施肥等各种人类活动干扰较大,各粒度组成及粒度参数均开始出现显著变化,这在表层迅速变轻的δ¹³C值也有所反映。DT7林地剖面尽管受人类干扰相对较小,但由于受到表层堆积的大量枯枝落叶等凋落物的影响,各粒度组成及参数在上部均也表现出明显变化,特别是表层0~10 cm δ¹³C值已呈明显的陆源性。δ¹³C值所表现出的陆源和海洋自生有机碳特征与根据经验公式计算的结果也具有较好的一致性。

关键词: 滩涂围垦, 有机碳稳定同位素, 粒度, 东台市

Abstract:

Based on stable carbon isotope (δ¹³C) signatures and particle size of coastal saline soil of Dongtai, changes in the particle size characteristics and soil organic matter source with different reclamation age were analyzed. Results showed that under the same climate and parent material conditions, soil organic carbon isotope and particle size were mainly affected by reclamation age and human disturbance. Along with the increasing reclamation age, the mean particle size significantly reduced, with DT7 (33.93 μm, forest, with the reclamation age of ~60 a) 13C values of core DT6 mainly reflect the characteristics of the original marine sediment. Due to large interference by human activities, all the particle size parameters show an obvious change in the top 0-40 cm soil layer (cultivated layer) of core DT1, a quick lighter shift of δ¹³C values also support this. Although core DT7 was less interfered by human activities, but due to the large accumulation of forest litter, the particle size parameters in the upper layers showed significant change, the dramatic variation of δ¹³C value at 0-10 cm layer in core DT7 also suggested the obvious presence of a land-derived component. Relative contribution of terrestrial-derived and marine-derived organic matter showed by δ¹³C values were in good agreement with the empirical formula calculation results.

Key words: tidal flat reclamation, stable carbon isotope, particle size, Dongtai

中图分类号:

P737

陈影影, 张振克, 徐华夏, 张凌华, 赵一飞, 张云峰, 符跃鑫. 沿海不同年限围垦区土壤剖面有机碳同位素与粒度特征——以江苏省东台市为例[J]. 地理科学, 2015, 35(6): 782-789.

Ying-ying CHEN, Zhen-ke ZHANG, Hua-xia XU, Ling-hua ZHANG, Yi-fei ZHAO, Yun-feng ZHANG, Yue-xin FU. Stable Carbon Isotope and Particle Size Characteristics in Coastal Saline Soil with Different Reclamation Age of Dongtai, Jiangsu Province[J]. SCIENTIA GEOGRAPHICA SINICA, 2015, 35(6): 782-789.

图/表 5

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参考文献 36

[1]	Cohen J E,Small C,Mellinger A,et al.Estimates of coastal populations[J].Science,1997,278:1209. doi: 10.1117/12.816339
[2]	陈吉余,陈沈良.中国河口海岸面临的挑战[J].海洋地质动态,2002,18(1):1~5. doi: 10.3969/j.issn.1009-2722.2002.01.001
[3]	Milliman J D,Meade R H.World-wide delivery of river sediment to the oceans[J].The Journal of Geology,1983,91(1):1-21. doi: 10.1086/628741
[4]	陈吉余. 中国围海工程[M].北京:中国水利水电出版社,2000.
[5]	Wolff W J.The end of a tradition:1000 years of embankment and reclamation of wetlands in the Netherlands[J].Ambio,1992,21(4):287-291. doi: 10.1016/0926-3373(92)80038-2
[6]	Pethick J.Estuarine and tidal wetland restoration in the United Kingdom: policy versus practice[J].Restoration Ecology,2002,10(3):431-437. doi: 10.1046/j.1526-100X.2002.01033.x
[7]	周学峰,赵睿,李媛媛,等.围垦后不同土地利用方式对长江口滩地土壤粒径分布的影响[J].生态学报,2009,29(10):5544~5551. doi: 10.3321/j.issn:1000-0933.2009.10.044
[8]	Wang Z,Zhang B,Zhang S,et al.Changes of land use and of ecosystem service values in SanjiangPlain,Northeast China[J].Environmental Monitoring and Assessment,2006,112(1-3):69-91. doi: 10.1007/s10661-006-0312-5
[9]	Iost S,Landgraf D,Makeschin F.Chemical soil properties of reclaimed marsh soil from Zhejiang Province P. R.China[J].Geoderma,2007,142(3-4):245-250. doi: 10.1016/j.geoderma.2007.08.001
[10]	葛晨东,王颖,Pedersen T F,等.海南岛万泉河口沉积物有机碳、氮同位素的特征及其环境意义[J].第四纪研究,2007,27(5):845~852. doi: 10.3321/j.issn:1001-7410.2007.05.026
[11]	Prahl F G,Ertel J R,Goni M A,et al.Terrestrial organic carbon contributions to sediments on the Washington margin[J].Geochimica et Cosmochimica Acta,1994,58(14):3035-3048. doi: 10.1016/0016-7037(94)90177-5
[12]	Yamamuro M.Chemical tracers of sediment organic matter origins in two coastal lagoons[J].Journal of Marine Systems,2000,26(2):127-134. doi: 10.1016/S0924-7963(00)00049-X
[13]	任美锷,等.江苏省海岸带和海涂资源综合调查(报告)[R].北京:海洋出版社,1986.
[14]	王建. 江苏省海岸滩涂及其利用潜力[M].北京:海洋出版社,2012.
[15]	欧维新,杨桂山,李恒鹏,等.苏北盐城海岸带景观格局时空变化及驱动力分析[J].地理科学,2004,24(5):610~615. doi: 10.3969/j.issn.1000-0690.2004.05.016
[16]	杨守业,张家强.苏北滨海平原全新世沉积物物源研究——元素地球化学与重矿物方法比较[J].沉积学报,1999,17(3):458~463.
[17]	吴小根,王爱军.人类活动对苏北潮滩发育的影响[J].地理科学,2005,25(5):614~620. doi: 10.3969/j.issn.1000-0690.2005.05.017
[18]	朱诚,程鹏,卢春成,等.长江三角洲及苏北沿海地区7000年以来海岸线演变规律分析[J].地理科学,1996,16(3):207~213. doi: 10.1007/BF02029074
[19]	王建,沙润,汪永进,等.江苏中部粉砂淤泥质滩岸大剖面所揭示的滩岸发育过程与环境演变[J].沉积学报,1997,15S1:51~56.
[20]	高建华,杨桂山,欧维新.苏北潮滩湿地植被对沉积物N,P含量的影响[J].地理科学,2006,26(2):224~230. doi: 10.3969/j.issn.1000-0690.2006.02.016
[21]	金雯晖,杨劲松,王相平.滩涂土壤有机碳空间分布与围垦年限相关性分析[J].农业工程学报,2013,29(5):89~94. doi: 10.3969/j.issn.1002-6819.2013.05.012
[22]	国家海洋局908专项办公室.海洋底质调查技术规程[M].北京:海洋出版社,2006.
[23]	Folk R L,Ward W C.Brazos River bar:a study in the significance of grain size parameters[J].Journal of Sedimentary Petrology,1957,27(1):3-26. doi: 10.1306/74D70646-2B21-11D7-8648000102C1865D
[24]	Blott S J,Pye K.GRADISTAT:a grain size distribution and statistics package for the analysis of unconsolidated sediments[J].Earth surface processes and Landforms,2001,26(11):1237-1248. doi: 10.1002/esp.261
[25]	王德,傅伯杰,陈利顶,等.不同土地利用类型下土壤粒径分形分析——以黄土丘陵沟壑区为例[J].生态学报,2007,27(7):3081~3089. doi: 10.3321/j.issn:1000-0933.2007.07.050
[26]	徐明星. 江苏沿海滩涂地区典型剖面土壤性质演化及其高光谱响应研究[D].南京:南京大学,2011.
[27]	王颖,朱大奎,曹桂云.潮滩沉积环境与岩相对比研究[J].沉积学报,2003,21(4):539~546. doi: 10.3969/j.issn.1000-0550.2003.04.001
[28]	张振克,李彦明,孟红明,等.江苏圆陀角附近潮滩沉积岩芯粒度变化及其环境意义[J].第四纪研究,2008,28(4):690~694. doi: 10.3321/j.issn:1001-7410.2008.04.022
[29]	王遵亲. 中国盐渍土[M].北京:科学出版社,1993.
[30]	O’Leary M H.Carbon isotopes in photosynthesis[J].Bioscience,1988,38(5):328-336. doi: 10.2307/1310735
[31]	Meyers P A.Preservation of elemental and isotopic source identification of sedimentary organic matter[J].Chemical Geology,1994,114(3):289-302. doi: 10.1016/0009-2541(94)90059-0
[32]	Naidu A S,Cooper L W,Finney B P,et al.Organic carbon isotope ratios (δ13C) of Arctic Amerasiancontinental shelf sediments[J].International Journal of Earth Sciences,2000,89(3):522-532. doi: 10.1007/s005310000121
[33]	Mueller-Lupp T,Bauch H A,Erlenkeuser H,et al.Changes in the deposition of terrestrial organic matter on the Laptev Sea shelf during the Holocene:evidencefrom stable carbon isotopes[J].International Journal of Earth Sciences,2000,89(3):563-568. doi: 10.1007/s005310000128
[34]	Wu J P,Calvert S E,Wong C S.Carbon and nitrogen isotope ratios in sedimenting particulate organic matter at an upwelling site off Vancouver Island[J].Estuarine,Coastal and Shelf Science,1999,48(2):193-203. doi: 10.1006/ecss.1998.0409
[35]	严长清,孙伟,陆效平,等.江苏省沿海滩涂土地利用与生态保护研究[J].生态科学,2007,26(3):263~268. doi: 10.3969/j.issn.1008-8873.2007.03.013
[36]	邵学新,杨文英,吴摇明,等.杭州湾滨海湿地土壤有机碳含量及其分布格局[J].应用生态学报,2011,22(3):658~664.

剖面	地理坐标	采样位置	土地利用	围垦年限(a)
DT6	32°45′42.6″N, 120°55′50.6″E	条子泥垦区	盐蒿滩	2
DT1	32°47′39.0″N, 120°52′55.4″E	三仓片垦区	农用地	16
DT7	32°52′38.8″N, 120°50′09.1″E	黄海森林公园	林地	约60