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

doi:10.11924/j.issn.1000-6850.casb2020-0065

Abstract

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

CLC Number:

S153.6

Chai Chunrong, Ni Hongwei, Liu Yingnan, Zhang Rongtao, Yang Jixian. Dynamic Response of the Soil Physical and Chemical Properties Under Simulated Snow Cover in the Sanjiang Plain[J]. Chinese Agricultural Science Bulletin, 2021, 37(5): 31-37.

Figures/Tables 10

References 38

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处理	微生物量碳/ (mg/kg)	微生物量氮/ (mg/kg)	可溶性有机碳/ (mg/kg)	铵态氮/ (mg/kg)	硝态氮/ (mg/kg)	pH	全磷/ (mg/kg)	速效磷/ (mg/kg)
W0	40.21±0.73b	6.75±0.13b	1248.62±52.59c	119.82±1.86b	3.64±0.02a	5.78±0.23b	0.94±0.03a	26.93±0.86a
W1200	48.63±0.46a	7.19±0.09a	1715.13±42.74b	125.72±3.97b	3.61±0.01a	5.72±0.31b	0.95±0.01a	28.69±0.71a
W3000	43.46±0.57b	6.21±0.12c	1807.42±80.13b	135.08±5.63a	3.13±0.03a	5.73±0.13b	0.98±0.02a	26.02±0.52a
W6000	35.28±0.61c	6.97±0.08b	2196.81±71.23a	136.69±4.57a	0.72±0.01b	6.08±0.27a	0.99±0.02a	26.86±0.43a

处理	微生物量碳/ (mg/kg)	微生物量氮/ (mg/kg)	可溶性有机碳/ (mg/kg)	铵态氮/ (mg/kg)	硝态氮/ (mg/kg)	pH	全磷/ (mg/kg)	速效磷/ (mg/kg)
W0	40.21±0.73b	6.75±0.13b	1248.62±52.59c	119.82±1.86b	3.64±0.02a	5.78±0.23b	0.94±0.03a	26.93±0.86a
W1200	48.63±0.46a	7.19±0.09a	1715.13±42.74b	125.72±3.97b	3.61±0.01a	5.72±0.31b	0.95±0.01a	28.69±0.71a
W3000	43.46±0.57b	6.21±0.12c	1807.42±80.13b	135.08±5.63a	3.13±0.03a	5.73±0.13b	0.98±0.02a	26.02±0.52a
W6000	35.28±0.61c	6.97±0.08b	2196.81±71.23a	136.69±4.57a	0.72±0.01b	6.08±0.27a	0.99±0.02a	26.86±0.43a