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中国农学通报 ›› 2021, Vol. 37 ›› Issue (5): 31-37.doi: 10.11924/j.issn.1000-6850.casb2020-0065

所属专题: 农业气象

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

模拟雪被变化下三江平原湿地土壤理化性质的动态响应

柴春荣1,2(), 倪红伟3, 刘赢男2, 张荣涛2(), 杨基先1()   

  1. 1哈尔滨工业大学,哈尔滨 150080
    2黑龙江省科学院自然与生态研究所,哈尔滨 150040
    3黑龙江省林业科学院,哈尔滨 150080
  • 收稿日期:2020-05-04 修回日期:2020-07-27 出版日期:2021-02-15 发布日期:2021-02-25
  • 通讯作者: 张荣涛,杨基先
  • 作者简介:柴春荣,女,1978年出生,黑龙江哈尔滨人,助理研究员,硕士,主要从事湿地生态学研究。通信地址,150040 黑龙江省哈尔滨市南岗区哈平路103号 黑龙江省科学院自然与生态研究所,Tel:0451-86052003,E-mail: chaicr2012@163.com
  • 基金资助:
    国家自然科学基金项目“雪被对三江平原湿地土壤CO2排放的影响及其时滞效应”(31670489);黑龙江省自然科学基金项目“三江平原湿地微生物群落结构对雪被的响应及其与水热因子的协同关系”(LH2019C076);黑龙江省科学院杰出青年基金项目“模拟氮沉降下三江平原小叶章湿地凋落物对温室气体排放的调节机制”(CXZQ2019ZR01)

Dynamic Response of the Soil Physical and Chemical Properties Under Simulated Snow Cover in the Sanjiang Plain

Chai Chunrong1,2(), Ni Hongwei3, Liu Yingnan2, Zhang Rongtao2(), Yang Jixian1()   

  1. 1School of Environment, Harbin Institute of Technology, Harbin 150080
    2Institute of Nature and Ecology, Heilongjiang Academy of Sciences, Harbin 150040
    3Heilongjiang Academy of Forestry, Harbin 150080
  • Received:2020-05-04 Revised:2020-07-27 Online:2021-02-15 Published:2021-02-25
  • Contact: Zhang Rongtao,Yang Jixian

摘要:

为了研究不同雪被处理下土壤温度变化对土壤理化性质影响的动态贡献,采集三江平原小叶章湿地原状土样品,通过室内模拟实验对4个雪被处理W0 (31.05%)、W1200 (42.66%)、W3000 (51.21%)和W6000 (76.66%)下的土壤理化性质进行检测。结果表明:W6000处理显著的增加了土壤pH;3个雪被添加处理均显著增加了土壤可溶性有机碳含量;W3000和W6000处理均显著增加了土壤铵态氮含量;W6000处理显著降低了土壤硝态氮含量;不同雪被处理对土壤全磷和速效磷均未产生显著影响;W1200处理显著的增加了土壤微生物量碳,而W6000处理显著的降低了土壤微生物量碳;W1200处理显著的增加了土壤微生物量氮,W3000处理显著的降低了土壤微生物量氮。不同雪被处理下土壤温度是土壤理化性质变化的主要影响因子。不同雪被处理会改变冻融期土壤理化性质,进而对湿地生态系统碳氮循环产生重要影响。

关键词: 三江平原, 小叶章湿地, 雪被, 土壤理化性质, 土壤温度

Abstract:

To study the dynamic response of soil physical and chemical properties to temperature changes under different snow treatments, soil samples from the Calamagrostis angustifolia wetland in the Sanjiang Plain were collected, and four snow treatments W0 (31.05%), W1200 (42.66%), W3000 (51.21%) and W6000 (76.66%) were simulated in the laboratory, and soil physical and chemical properties were tested. The results showed that the treatment of W6000 significantly increased soil pH; the three snow treatments significantly increased the content of soil soluble organic carbon; the treatment of W3000 and W6000 significantly increased the content of soil ammonium nitrogen; the treatment of W6000 significantly reduced the soil nitrate nitrogen content; different snow treatments had no significant effect on soil total phosphorus and available phosphorus; W1200 treatment significantly increased soil microbial biomass carbon, while W6000 treatment significantly reduced soil microbial biomass carbon; W1200 treatment significantly increased soil microbial biomass nitrogen, W3000 treatment significantly reduced soil microbial biomass nitrogen. Soil temperature under different snow treatments was the main influencing factor for the change of soil physical and chemical properties. Different snow treatments would change the physical and chemical properties of the soil during the freezing and thawing period, which had an important impact on the carbon and nitrogen cycle of the wetland ecosystem.

Key words: Sanjiang plain, Calamagrostis angustifolia wetland, snow cover, soil physical and chemical properties, soil temperature

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