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温度对太湖湖滨带不同水分梯度土壤氮矿化的影响(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2011年06期
Page:
147-150
Column:
研究简报
publishdate:
2011-11-28

Article Info:/Info

Title:
Responses of soil nitrogen mineralization to temperature along soil moisture gradients in the riparian zone of Taihu Lake
Author(s):
ZHAO Qiqi1 SHEN Yujuan1LI Ping1 FENG Yuqing12 YU Xingsheng2 LU Huabing2RUAN Honghua1*
1. Jiangsu Key Laboratory of Forest Ecological Engineering, College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China; 2. Suzhou City Forestry Division, Suzhou 215128, China
Keywords:
moisture gradient riparian zones temperature net nitrogen mineralization nitrogen mineralization rate Q10
Classification number :
S142
DOI:
10.3969/j.jssn.1000-2006.2011.06.030
Document Code:
A
Abstract:
The soil net mineralized nitrogen amount and nitrogen mineralization rates along a soil moisture gradient in a riparian area in Taihu Lake were examined using random block experimental design and incubation method. The soil samples were put in PVC tube and incubated at 5, 15, 25, and 35 ℃,respectively for 30 days. The results showed that the soil mineralized nitrogen amount, net nitrogen nitrification rate and mineralization rates increased significantly with increasing temperature. At the same temperature, the soil mineralized nitrogen amount, net nitrogen nitrification rate and mineralization rates increased with distance from the water body. The Q10 value of soil nitrogen mineralization fluctuated between 1.16 and 1.55. There was no obvious regularity of the Q10 value of soil N mineralization with distance from the water body. The experiments showed that soil mineralization nitrogen in the riparian zone would be greatly influenced by soil temperature change.

References

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Last Update: 2011-11-28