黄河三角洲滨海地区植物生长季大气氮沉降动态

	黄河三角洲滨海地区植物生长季大气氮沉降动态
其他题名	Atmospheric Nitrogen Deposition During Growing Season in Coastal Zone of the Yellow River Delta
	宁凯; 于君宝; 屈凡柱; 王光美; 管博
发表期刊	地理科学
ISSN	1000-0690
	2015
卷号	35 期号:2 页码:218-223
关键词	大气干、湿沉降硝态氮铵态氮黄河三角洲
产权排序	中国科学院烟台海岸带研究所
作者部门	中科院海岸带环境过程与生态修复重点实验室
英文摘要	利用SCJ-302型降水降尘自动采样器在植物生长季对黄河三角洲滨海湿地的大气氮沉降进行监测,对沉降物中水溶性离子、干、湿沉降氮输入量、铵态氮和硝态氮在总沉降量中的贡献率及月变化动态等分析表明:黄河三角洲植物生长季,大气干、湿沉降中SO_4~(2-)和NO_3~-占阴离子总量的92% 以上,和Na~+和Ca~(2+)占阳离子总量的80%以上,总N沉降量约为2 264.24 mg/m~2,且69% 集中在降雨量较丰沛的6~8月。其中干沉降氮贡献率约为32.02%,主要集中在春季。N的湿沉降量与降雨量呈显著正线性相关(R~2=0.82),在降雨量丰沛的8月,达到最大值675.64 mg/m~2。该地区大气干沉降的氮素形态以硝态氮为主,约占氮素输入量的57.21%,湿沉降中以铵态氮为主,约占氮素输入量的56.51%。植物生长季中,大气沉降中的硝态氮与铵态氮含量对表层10 cm土壤的月平均贡献率分别为约31.38%和20.50%,可见大气氮沉降是黄河三角洲滨海区域土壤主要氮素来源之一。
中文摘要	Wet and dry atmospheric depositions were monitored in plant growing season in coastal wetland of Yellow River Delta using SCJ-302 model automatic sampling equipment. The water-soluble ions, wet and dry atmospheric N depositions, monthly variation and the proportion of NH_4~+-N and NO_3~--N in total nitrogen deposition were analyzed. The results showed that SO_4~(2-) and NO_3~- accounted for more than 92% of the anion numbers, Na~+ and Ca~(2+) accounted for more than 80% of the cation numbers, respectively, in wet and dry atmospheric depositions in growing season in the Yellow River Delta. The total atmospheric nitrogen deposition was about 2 264.24 mg/m~2, and 69% of it occurred from June to August in which the precipitation was abundant. In the total atmospheric nitrogen deposition, dry atmospheric nitrogen deposition accounted for about 32.02%, and it was high in spring. The significant positive relationship between wet nitrogen deposition and precipitation was observed in the study (R~2=0.82). The wet atmospheric nitrogen deposition reached peak value in August (675.64 mg/m~2). In the studied area, the predominant nitrogen in dry atmospheric deposition was NO_3~--N with about 57.21% of total dry atmospheric nitrogen deposition, while the predominant nitrogen in wet atmospheric deposition was NH_4~+-N with about 56.51% of total wet atmospheric nitrogen deposition. In plant growing season, the average monthly attribution rate of atmospheric deposition of NO_3~--N and NH_4~+-N were about 31.38% and 20.50% for the contents of NO_3~--N and NH_4~+-N in 10 cm soil layer, respectively. Therefore, the atmospheric nitrogen was one of main sources for soil nitrogen in coastal zone of Yellow River Delta.
文章类型	期刊论文
资助机构	十二五国家科技支撑计划项目,山东省自然科学杰出青年基金项目,中国科学院国家外国专家局创新团队国际合作伙伴计划项目
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:5373305
引用统计
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/8389
专题	中国科学院海岸带环境过程与生态修复重点实验室中国科学院海岸带环境过程与生态修复重点实验室_滨海湿地实验室
推荐引用方式 GB/T 7714	宁凯,于君宝,屈凡柱,等. 黄河三角洲滨海地区植物生长季大气氮沉降动态[J]. 地理科学,2015,35(2):218-223.
APA	宁凯,于君宝,屈凡柱,王光美,&管博.(2015).黄河三角洲滨海地区植物生长季大气氮沉降动态.地理科学,35(2),218-223.
MLA	宁凯,et al."黄河三角洲滨海地区植物生长季大气氮沉降动态".地理科学 35.2(2015):218-223.

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