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[1]欧延升 汪 霞** 李 佳 贾海霞 赵云飞 黄 政 洪苗苗.不同恢复年限人工草地土壤碳氮磷含量及其生态化学计量特征*[J].应用与环境生物学报,2019,25(01):1-11.[doi:10.19675/j.cnki.1006-687x.2018.05005]
 OU Yansheng,WANG Xia**,LI Jia,et al.Contents and ecological stoichiometry characteristics of soil carbon, nitrogen and phosphorus in artificial grassland under different restoration years*[J].Chinese Journal of Applied & Environmental Biology,2019,25(01):1-11.[doi:10.19675/j.cnki.1006-687x.2018.05005]
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不同恢复年限人工草地土壤碳氮磷含量及其生态化学计量特征*()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
25卷
期数:
2019年01期
页码:
1-11
栏目:
研究论文
出版日期:
2019-01-30

文章信息/Info

Title:
Contents and ecological stoichiometry characteristics of soil carbon, nitrogen and phosphorus in artificial grassland under different restoration years*
文章编号:
201805005
作者:
欧延升 汪 霞** 李 佳 贾海霞 赵云飞 黄 政 洪苗苗
兰州大学资源环境学院西部环境教育部重点实验室 兰州 730000
Author(s):
OU Yansheng WANG Xia** LI Jia JIA Haixia ZHAO Yunfei HUANG Zheng & HONG Miaomiao
Key Laboratory of Western China’s Environmental Systems ( Ministry of Education) , College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
关键词:
恢复年限人工草地碳氮磷生态化学计量学
Keywords:
restoration years artificial grassland carbon nitrogen phosphorus ecological stoichiometry
DOI:
10.19675/j.cnki.1006-687x.2018.05005
摘要:
应用对比分析和空间代替时间的方法,以黄土高原丘陵沟壑区罗玉沟流域不同恢复年限的人工草地土壤为研究对象,分析了土壤碳氮磷含量及其生态化学计量特征的变化,探讨了它们与土壤理化性质之间的关系。结果表明:随着恢复年限的增加,人工草地土壤有机碳、全氮和全磷含量均增加,恢复至8年以后有机碳含量保持平稳。人工草地土壤C/N呈先增后减的趋势,变化范围为10.66-13.62,与全国土壤C/N平均水平持平;土壤C/P和N/P呈先增后减再增的趋势,变化范围分别为9.19-13.18和0.82-1.17,均低于全国水平。土壤有机碳、全氮和全磷与土壤含水率、容重、孔隙度和pH值之间呈显著的相关关系(P < 0.01),土壤有机碳、全氮和全磷含量间具有显著的正相关性(P < 0.01)。C/N与全氮含量存在显著负相关关系,与有机碳含量不存在相关性,说明C/N受氮素影响较大;C/P与有机碳含量呈显著正相关(P < 0.01),与全磷含量不相关,则说明C/P主要受碳素限制;而N/P与全氮、全磷含量均达到显著正相关(P < 0.01),说明N/P由氮素、磷素共同决定。由此可知,氮和磷是该地区主要的限制营养元素。本研究结果可为当地通过合理利用草地恢复方式改善土壤质量和维护草地健康提供理论参考。(图2 表4 参53)
Abstract:
Using the methods of comparative analysis and substituting temporal serial with spatial serial, artificial grassland soil with different recovery years in Luoyugou watershed in hilly gully region of loess plateau was studied. to analysis the content of carbon, nitrogen and phosphorus and their ecological stoichiometric characteristics, to discuss their relationships with soil physical and chemical properties. The results showed that with the increase of restoration years, the content of organic carbon, total nitrogen and total phosphorus in artificial grassland increased, and the organic carbon content remained stable after 8 years. Soil C/N in artificial grassland showed a trend of increasing firstly and then decreasing, and the variation range was 10.66 -13.62, which was equal to the national soil C/N average level. Soil C/P and N/P showed a trend of increasing-decreasing-increasing, and the range of variation was 9.19-13.18, 0.82-1.17, respectively, which was lower than the national level. There was a significant correlation between soil organic carbon, total nitrogen, total phosphorus and soil moisture content, density, porosity, pH. Soil organic carbon, total nitrogen and total phosphorus had a significant positive correlation (P < 0.01). C/N had significant negative correlation with total nitrogen but not with organic carbon(P < 0.01), indicating that C/N was significantly affected by nitrogen. C/P was positively correlated with organic carbon but not with total phosphorus(P < 0.01), indicating that C/P was mainly controlled by carbon. N/P was positively correlated with total nitrogen and total phosphorus(P < 0.01), indicating that N/P was determined by nitrogen and phosphorus. Therefore, nitrogen and phosphorus are the main restricted nutrients in this area. Planting artificial grassland not only changes soil structure and nutrient content s, but also plays an active role in maintaining soil and water, regulating climate and so on. It can be used as one of the effective measures for grassland ecological restoration in the Luoyugou Basin.

相似文献/References:

[1]王启兰,王长庭,刘伟,等.江河源区人工草地植物群落和土壤酶活性变化[J].应用与环境生物学报,2010,16(05):662.[doi:10.3724/SP.J.1145.2010.00662]
 WANG Qilan,WANG Changting,LIU Wei,et al.Changes in Plant Communities and Soil Enzyme Activities of Artificial Grasslands in Headwater Areas of the Yangtze and Yellow Rivers[J].Chinese Journal of Applied & Environmental Biology,2010,16(01):662.[doi:10.3724/SP.J.1145.2010.00662]
[2]杨希智,王长庭,字洪标,等.三江源区不同建植年限人工草地土壤微生物群落结构特征[J].应用与环境生物学报,2015,21(02):341.[doi:10.3724/SP.J.1145.2014.10033]
 YANG Xizhi,WANG Changting,ZI Hongbiao,et al.Soil microbial community structure characteristics in artificial grassland with different cultivation years in the headwater region of Three Rivers, China[J].Chinese Journal of Applied & Environmental Biology,2015,21(01):341.[doi:10.3724/SP.J.1145.2014.10033]

备注/Memo

备注/Memo:
收稿日期: 2018-05-04 接受日期 Accepted: 2018-06-19
*国家自然科学基金(41572332)、甘肃省重点研发计划(17YF1FA131)和国家科技基础资源调查专项(2017FY100900)资助?
**通讯作者(E-mail:wangxia@lzu.edu.cn)
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更新日期/Last Update: 2018-07-13