|Table of Contents|

Response of Soil Active Organic Carbon Fractions and Soil Enzyme Activities to Freeze-Thaw With Different Disturbance Intensity Wetland of the Sanjiang Plain

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2023年09
Page:
54-63
Research Field:
Publishing date:

Info

Title:
Response of Soil Active Organic Carbon Fractions and Soil Enzyme Activities to Freeze-Thaw With Different Disturbance Intensity Wetland of the Sanjiang Plain
Author(s):
MENG Yao1; LIU Chuanshan2; WANG Xueqiao1; LI Guangyu1; ZHAO Chenchen1; LI Fu1
(1.The Faculty of Science,Jiamusi University，Jiamusi,Heilongjiang 154007;2.Shandong Linyi No.1 Middle School，Linyi,Shandong 251500)
Keywords:
seasonal freeze-thaw; different types of wetlands; soil active organic carbon; soil enzyme activity
PACS:
-
DOI:
10.11937/bfyy.20223125
Abstract:
Taking the 0-10 cm surface soil of undisturbed Deyeuxia purpurea wetland (UDAW) in Honghe National Nature Reserve，disturbed Deyeuxia purpurea (DDAW) and rice paddy (RP) outside the Honghe National Nature Reserve in the Sanjiang Plain of Northeast China as test materials,the effects of seasonal freeze-thaw effects on soil active organic carbon and enzyme activities in wetland with different disturbance intensities were studied by in-situ monitoring method，in order to provide reference for scientific evaluation of soil carbon sequestration potential in Sanjiang Plain.The results showed that during autumn freezing-thawing period，soil soluble organic carbon (DOC) content in UDAW，DDAW and RP wetlands increased by 6.2%-30.3%，3.9%-33.2% and 18.4%-40.1%.Microbial biomass carbon (MBC) content decreased by 2.9%-28.1%，6.6%-26.1% and 1.4%-20.2%.Cellulase，amylase and sucrase decreased by 10.7%-35.7%，11.2%-42.3% and 9.8%-32.2%，respectively.DOC，MBC content and three kinds of enzyme activity increased during the freeze-thaw.DOC，MBC content and enzyme activities were UDAW>DDAW>RP，and the effect of freeze-thaw in autumn was greater than that in spring.The activities of three soil enzymes were decreased by freeze-thaw action and cellulase and amylase activities were UDAW>DDAW>RP，while sucrase was DDAW>UDAW>RP.The activity of the three enzymes showed that the freeze-thaw effect in autumn was greater than that in spring.The results of variance analysis showed that the freezing and thawing numbers and temperature had significant effects on soil active organic carbon fractions and enzyme activities，and the freezing and thawing number was the main factors，while temperature was the secondary factor.

References:

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Last Update: 2023-06-06