[1]刘吉平,梁晨,赵亮.非生长季农田中孤立湿地土壤有机质及氮的空间分布规律[J].江苏农业学报,2017,(06):1288-1293.[doi:doi:10.3969/j.issn.1000-4440.2017.06.013]
　LIU Ji-ping,LIANG Chen,ZHAO Liang.Spatial distribution of soil organic matter and nitrogen in soil of isolated wetland in farmland during the non-growing season[J].,2017,(06):1288-1293.[doi:doi:10.3969/j.issn.1000-4440.2017.06.013]
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非生长季农田中孤立湿地土壤有机质及氮的空间分布规律()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2017年06期
页码:
1288-1293
栏目:
耕作栽培·资源环境
出版日期:
2017-12-30

文章信息/Info

Title:
Spatial distribution of soil organic matter and nitrogen in soil of isolated wetland in farmland during the non-growing season
作者:
刘吉平; 梁晨; 赵亮
(吉林师范大学旅游与地理科学学院，吉林四平136000） (吉林师范大学旅游与地理科学学院，吉林四平136000）
Author(s):
LIU Ji-ping; LIANG Chen; ZHAO Liang
(College of Tourist and Geoscience Jilin Normal University, Siping 136000, China)
关键词:
农田中孤立湿地; 有机质; 氮
Keywords:
isolated wetland in farmland; soil organic matter; nitrogen
分类号:
S153.6
DOI:
doi:10.3969/j.issn.1000-4440.2017.06.013
文献标志码:
A
摘要:
为探讨农田中孤立湿地的土壤养分特征，以自然孤立湿地为参考，基于野外采样与室内分析对2012年11月三江平原非生长季农田中孤立湿地不同植被带土壤有机质与氮的空间分布规律进行分析。结果表明，垂直方向上 0～60.0 cm，土壤有机质随土壤深度增加而逐渐减少，含量在 0.26％至11.06％之间；总氮含量除在小叶章群落中表层土壤最高，其他群落在土壤中层最高，含量在 1 202.2 mg/kg至6 139.4 mg/kg之间；硝态氮含量以中上层土壤较高，氨态氮除在小叶章群落明显富集于土壤上层，其他群落主要分布在土壤中部，二者含量分别为 0～49.51 mg/kg及 1.26～18.83 mg/kg。由湿地中心向边缘，有机质、硝态氮、氨态氮平均含量及碳氮比均呈先增后减的倒“V”字型规律，前两者最高值分别为6.76％与23.2 mg/kg，氨态氮、碳氮比最高值分别为9.92 mg/kg和26.14，总氮呈先增后减再增的“N”字型分布，最高值为3 417.5 mg/kg。农田中孤立湿地土壤有机质和氮的分布受水分条件、植物多样性、生物过程、季节变化及人类活动的影响，农田中孤立湿地有机质和氮的含量及其变幅均高于自然孤立湿地。
Abstract:
In order to discuss soil nutrient feature of isolated wetland in farmland, using natural isolated wetland as reference, spatial distribution of soil organic matter and nitrogen in soil of different vegetation zones of isolated wetland in farmland in Sanjiang Plain was analyzed based on outdoor investigation and indoor analysis during the non-growing season of November 2012. The results showed that soil organic matter content ranged from 0.26% to 11.06% and decreased with the increase of vertical depth from 0 cm to 60.0 cm. The content of total nitrogen in communities was highest in middle layer apart from that in Calamagrostis-angustifolia community and the content ranged from 1 202.20 mg/kg to 6 139.40 mg/kg. The content of nitrate nitrogen was higher in pelagic soil and ammonia nitrogen content of Calamagrostis-angustifolia community was higher in upper layer. The content of nitrate nitrogen and ammonia nitrogen ranged from 0 mg/kg to 49.51 mg/kg and from 1.26 mg/kg to 18.83 mg/kg, respectively. From center to the edge of wetland, the average content of soil organic matter, nitrate nitrogen, ammonia nitrogen and C/N presented inverted V type, and the maximum value was 6.76%, 23.20 mg/kg, 9.92 mg/kg and 26.14, respectively. Total nitrogen content was N type and its maximum value was 3 417.50 mg/kg. Distribution of soil organic matter and nitrogen in the wetland was affected by moisture, plant diversity, bioprocess, seasonal variation and human activity. The content and amplitude of soil organic matter and nitrogen of isolated wetland in farmland were all higher than those of natural isolated wetland.

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备注/Memo

备注/Memo:
收稿日期：2017-05-22 基金项目：国家自然科学基金项目（41071037），教育部新世纪优秀人才支持计划项目（NCET-12-0730）；吉林师范大学研究生科研创新计划资助项目（研创新201633） 作者简介：刘吉平（1972- ），男，山东定陶人，博士，教授，主要从事湿地生态学研究。（E-mail）liujpjl@163.com
更新日期/Last Update: 2018-01-03