干旱区生态环境知识资源中心(Arid): 滇东地区土壤剖面氮同位素垂直分异及空间分异特征

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	滇东地区土壤剖面氮同位素垂直分异及空间分异特征
其他题名	Vertical distribution and spatial differentiation characteristics of nitrogen isotope in soil profile of Eastern Region of Yunnan Province
	郭松 1; 王立发 2; 马海欧 1; 李双双 1; 蔡晓娟 1; 季宏兵 1
来源期刊	环境化学
ISSN	0254-6108
出版年	2018
卷号	37 期号:2 页码:279-286
中文摘要	选取云南石林县不同土壤类型、不同石漠化等级以及不同人为干扰方式影响下的7处典型的土壤剖面为研究对象,研究了剖面中氮同位素垂直分异及空间分异特征.结果表明,土壤中pH值为3.686.07,全部土壤剖面呈酸性,总有机碳(TOC)为0.5829.25 g·kg~(-1),碳氮比(C/N)为1.3314.70,delta~(15 )N介于1.44 14.86,在随深度的垂直分异中,受剖面中腐殖质层和硝化反硝化反应的影响,土壤中稳定氮同位素呈现一定的规律性变化.在各个剖面之间的空间分异中,两种不同土壤类型下delta~(15)N值的分散程度均存在轻度石漠化剖面>中度石漠化剖面>强度石漠化剖面的规律.同时在受人为影响较小的红壤剖面delta~(15)N值大致呈现强度石漠化剖面>中度石漠化剖面>轻度石漠化剖面的规律.采样区内无论是石灰岩土壤剖面还是红壤剖面delta~(15)N值与土壤理化性质均无显著相关关系.
英文摘要	Seven typical soil profiles under the influence of different soil types,different rocky desertification levels and different human disturbance modes in Shilin County of Yunnan Province were selected as the object of study to investigate the vertical distribution and spatial differentiation of nitrogen isotopes. The results showed that the soil pH was 3.68 to 6.07, the total soil profile was acidic, the total organic carbon (TOC) was 0.58 g·kg~(-1) to 29.25 g·kg~(-1), the C /N ratio was 1.33 to 14.70,and delta~(15)N was 1.44 to 14.86. In the vertical differentiation with depth, the stable nitrogen isotopein the soil showed some regular changes because of the humus layers and nitrificationdenitrification. In the spatial differentiation between the profiles, the degree of delta~(15)N dispersion in the two different soil types was mild rocky desertification profile>moderate rocky desertification profile> intensity rocky desertification profile. At the same time, the delta~(15)N values of the red soil profile,which were less affected by man-made, showed the intensity of rocky desertification profile> moderate rocky desertification profile>mild rocky desertification profile. There was no significant correlation between delta~(15)N and soil physical and chemical properties in both the limestone soil profile and the red soil profile.
中文关键词	碳酸盐岩 ; 喀斯特石漠化 ; 氮同位素
英文关键词	carbonate rocks karst rocky desertification nitrogen isotopes
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:6169442
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237841
作者单位	1.北京科技大学能源与环境工程学院, 北京 100083, 中国; 2.北京市地质工程设计研究院, 北京 100120, 中国
推荐引用方式 GB/T 7714	郭松,王立发,马海欧,等. 滇东地区土壤剖面氮同位素垂直分异及空间分异特征[J],2018,37(2):279-286.
APA	郭松,王立发,马海欧,李双双,蔡晓娟,&季宏兵.(2018).滇东地区土壤剖面氮同位素垂直分异及空间分异特征.环境化学,37(2),279-286.
MLA	郭松,et al."滇东地区土壤剖面氮同位素垂直分异及空间分异特征".环境化学 37.2(2018):279-286.