期刊文献+

乌梁素海沉积物中有机质和全氮含量分布特征 被引量:49

Distribution characteristics of organic matter and total nitrogen in sediments of Lake Wuliangsuhai.
下载PDF
导出
摘要 针对乌梁素海富营养化日趋严重和湿地面积逐渐萎缩,系统地研究了其生态环境地球化学效应,结果表明,乌梁素海表层沉积物中的全氮含量存在明显的经向和纬向分异特征;沉积物中全氮养分含量与有机质含量显著相关(r〉0.93);沉积物中C/N的平均值介于12.07~19.95之间,表明有机质主要来源于湖中水生植物。水体富营养化具有显著的内源性.TN和有机质在不同粒级表层沉积物中的粒度效应明显,且TN和有机质在Ⅳ粒级的含量分别为Ⅰ粒级的3.1~7.6倍和2.5~8.0倍. Lake Wuliangsuhai is one of the representative inland freshwater lakes in grassland areas of China, and its shrinking and eutrophication is becoming more serious. The study on the ecological and environmental effects of the shrinking and eutrophication revealed that the total nitrogen (TN) content in the surface sediment of the lake had an obvious differentiation both in longitudinal and in latitudinal direction, and had a significant correlation with organic matter content. The mean C/N ratio of the sediment ranged from 12.07 to 19.95, which meant that the organic matter was mainly come from the hydrophytes of the lake, and the eutrophication of the lake was mostly caused by its internal load. Both TN and organic matter had a clear grain-size effect in different fractions of grain sizes of surface sediment, and their contents in Ⅳ ( 〈 63 μm) were as 3.1~ 7.6 and 2.5~ 8.0 times as those in Ⅰ ( 〉250μm), respectively.
出处 《应用生态学报》 CAS CSCD 北大核心 2006年第4期620-624,共5页 Chinese Journal of Applied Ecology
基金 内蒙古自治区自然科学基金资助项目.
关键词 乌梁素海 全氮 有机质 分布特征 粒度效应 Lake Wuliangsuhai, Total nitrogen, Organic matter, Distribution characteristics, Grain-size effect.
  • 相关文献

参考文献13

二级参考文献201

  • 1上官行健,王明星.稻田CH_4排放的控制措施[J].地球科学进展,1993,8(5):55-62. 被引量:26
  • 2Stefan Weisner,Peder Eriksson,WilhelmGranéli,Lars Leonardson,朱志辉.大型植物对湿地中硝酸盐持留的作用[J].人类环境杂志,1994,23(6):363-366. 被引量:6
  • 3Ingemar Ahlgren,Tomas Waara,Katarina Vrede,Fred Srensson,马焕成.湖泊中与微生物转化有关的氮素消涨[J].人类环境杂志,1994,23(6):367-377. 被引量:2
  • 4尹澄清.内陆水—陆地交错带的生态功能及其保护与开发前景[J].生态学报,1995,15(3):331-335. 被引量:167
  • 5吕宪国 何岩 杨青.湿地碳循环及其在全球变化中的意义[A].陈宜瑜.中国湿地研究[C].长春:吉林科学技术出版社,1995.68-72.
  • 6尚士友 乌云塔娜 杜健民.乌梁素海湿地生态保护的研究[J].中国学术期刊文摘(科技快报),1998,4(8):970-972.
  • 7[8]ChilderDL, HN Mckellar, RFDame, etal.. Adynamicnutrient budget of subsystem interaction in a salt marsh estuary [J]. Estuarine, Coastal and Shelf Science, 1993, 36:105 -131.
  • 8[9]Prestegaard K L, Connell M O. Seasonal timing and process of nitrite delivery to streams in the lower Chesapeake Bay drainage [A]. In: Water Resource Research Center FY 94 Report to U.S. Dept. of interior Grant No. 14 - 08 - 0001 - G2024[C].Marryland, USA: University of Marryland Press, 1995. 13 -17.
  • 9[10]Rizzo W M, Christian R R. Signification of subtidal sediments to heterotrophically- mediated oxygen and nutrient dynamics in temperate estuary[J]. Estuaries, 1996, 19: 475-487.
  • 10[11]Roden E E, Edmonds J W. Phosphate mobilization in anaerobic sediments: microbial Fe(Ⅲ) oxide reduction versus iron - sulfide formation[J]. Archiv Fur Hydrobiologie , 1997, 139:347- 378.

共引文献616

同被引文献795

引证文献49

二级引证文献446

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部