南京林业大学学报(自然科学版) ›› 2010, Vol. 34 ›› Issue (02): 125-128.doi: 10.3969/j.jssn.1000-2006.2010.02.029

• 研究简报 • 上一篇    下一篇

不同杨农复合经营模式土壤有机碳和全氮含量垂直分布及储量研究

李海玲1,2,陈乐蓓1,方升佐1*   

  1. 1.南京林业大学森林资源与环境学院,江苏南京210037;2.山西师范大学城市与环境学院,山西临汾041004
  • 出版日期:2010-05-14 发布日期:2010-05-14
  • 基金资助:
    收稿日期:2009-04-09修回日期:2009-09-10基金项目:“十一五”国家科技支撑计划(2006BAD03A1505)作者简介:李海玲(1977—),讲师,博士生。*方升佐(通信作者),教授。Email: fangsz@njfu.com.cn。引文格式:李海玲,陈乐蓓,方升佐. 不同杨农复合经营模式土壤有机碳和全氮含量垂直分布及储量研究[J]. 南京林业大学学报:自然科学版,2010,34(2):125-128.

Vertical distribution and storage of soil organic carbon and nitrogen in different poplar crop intercropping patterns

LI Hailing1,2, CHEN Lebei1, FANG Shengzuo1*   

  1. 1.College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China; 2.College of City and Environment, Shanxi Normal University, Linfen 041004, China
  • Online:2010-05-14 Published:2010-05-14

摘要: 对苏北地区3种杨农复合经营模式(宽窄行模式即K模式、片林模式即P模式和网格模式即W模式)的100 cm土体8个土层中土壤有机碳、氮的分布进行研究,结果表明:3种模式土壤有机碳、氮含量及储量的剖面分布均表现出在表层相对较高,都有随土壤剖面深度增加而降低的趋势,且耕作层以下迅速降低。3种模式深度100 cm的土壤有机碳含量变化范围为0.64~1527 g/kg, 全氮含量变化范围0.30~2.09 g/kg;土壤有机碳含量与全氮含量及C/N呈极显著相关关系;100 cm深土壤有机碳储量在3种模式中分别达(71.19±0.72)、(40.67±058)和(42.64±0.56) t/hm2。

Abstract: The storages and vertical distribution of soil organic carbon and nitrogen under three poplar crop intercropping patterns were studied in northern Jiangsu. The results showed that the storages and contents in the profile generally decreased with the increase of soil depth under the three patterns, those in topsoil were relatively higher, declined rapidly down to 20 cm. The vertical distribution of soil organic carbon and nitrogen contents was different under three patterns. The soil organic carbon contents within 100 cm depth ranged from 0.64 to 15.27 g/kg, while the soil total N contents within 100 cm ranged from 0.30 to 2.09 g/kg. Soil organic carbon was significantly related with soil total N and C/N. Soil organic carbon storage was (71.19±0.72) t/hm2 in the K pattern, (40.67±0.58) t/hm2 in the P pattern and (42.64±056) t/hm2 in the W pattern respectively.

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