Open AccessEffect of freezing and thawing on nutrient content of soft rock
Author(s) -
Lei Shi
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1549/4/042131
Subject(s) - phosphorus , environmental science , soil fertility , nutrient , nitrogen , agronomy , nitrogen cycle , snow cover , soil water , snow , soil science , chemistry , ecology , biology , geology , geomorphology , organic chemistry
There are few studies on the effects of freeze-thaw on soil nutrients and soil enzymes, which are directly related to soil fertility and soil biological activity. In the past, the research mainly focused on the nitrogen and phosphorus cycle in the growing period of soil, but more and more studies have found that the non growing season in winter and the change of snow cover thickness caused by global warming affect the nitrogen and phosphorus cycle in the soil The influence of environment on the interannual scale can not be ignored. After the freeze-thaw cycle, the total nitrogen content of the soil did not change significantly, compared with that before the freeze-thaw cycle, the available potassium content of the arsenic sandstone increased, but not significantly; the available phosphorus content of the soil in the freeze-thaw cycle decreased.