THERMAL SCIENCE

International Scientific Journal

Thermal Science - Online First

online first only

Response of soil microbial community and hydrothermal environment to nitrogen deposition in Pinus massoniana forest in Central Asia

ABSTRACT
In order to demonstrate the response of soil microbial community and hydrothermal environment to nitrogen deposition(low nitrogen N20:20kg•hm-2;medium nitrogen N40:40kg•hm-2;high nitrogenN60:60kg•hm-2 and contrast N0:0kg•hm-2), a Pinus massoniana forest in Central Asia was chosen to do the nitrogen deposition simulation experiment. This research is aimed to provide a theoretical evidence for the protection of soil ecosystem under different forest types in china. The results showed that: 1) Soil microbes of Pinus massoniana forest were in seasonal changes (spring, autumn, winter, and summer). Differences in different seasons were significant. 2) A very significant quadratic relationship was shown between soil microbes and soil temperature. However, the relationship between soil microbes and the soil water content was not closely related. N deposition reduced the relationship between microbes and temperature but increased the correlation between microbes and water content. 3) Effects of N deposition on soil temperature and soil water content were significant, but the effects were in small scale. 4) The effects of N deposition on soil microbial community structure were significant.
KEYWORDS
PAPER SUBMITTED: 2018-11-20
PAPER REVISED: 2019-01-15
PAPER ACCEPTED: 2019-01-25
PUBLISHED ONLINE: 2019-05-18
DOI REFERENCE: https://doi.org/10.2298/TSCI181120143L
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