We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
大兴安岭地区林下土壤酶活性对冻融交替的响应.
- Authors
王世佳; 郭亚芬; 崔晓阳
- Abstract
We examined the effects of freeze-thaw cycles (0, 1, 3, 5, 7, 15 cycles) on the activities of urease, invertase, and proteinase in the different layers of the soil under the four typical stands in the cold temperate zone, i. e., Pinus pumila stand, Rhododendron 一 Betula platyphylla stand, Rhododendron 一Larix gmelinii stand, Ledum 一 Larix gmelinii stand, with the indoor freeze-thaw simulation culture method being used. The relationship between soil enzyme activity and multiple physicochemical variables was analyzed during freeze-thaw alternation. The results showed that the activity of soil urease was firstly increased and then inhibited during freeze-thaw alternation. After freeze-thaw, urease activity did not differ from that without freeze-thaw. Invertase activity was firstly inhibited and then increased during freeze-thaw alternation, and was significantly increased by 8. 5% -40.3% after freeze-thaw. Proteinase activity was firstly increased and then inhibited during freeze-thaw alternation, and was significantly decreased by 13.8%-68.9% after freeze-thaw. After freezing and thawing, there was significant positive correlation between urease activity and ammonium nitrogen and soil water content in Ledum-L. gmelinii stand and P. pumila stand, respectively, and proteinase activity had significant negative correlation with inorganic nitrogen concentration in P. pumila stand, Rhododendron-B. platyphylla stand, and Ledum-L. gmelinii stand. Invertase activity had significant positive correlation with organic matter in Rhododendron-L. gmelinii stand and Ledum-L. gmelinii stand.
- Subjects
NITROGEN in water; NITROGEN in soils; SOIL moisture; INVERTASE; SOIL enzymology; THAWING
- Publication
Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao, 2023, Vol 34, Issue 5, p1211
- ISSN
1001-9332
- Publication type
Article
- DOI
10.13287/j.1001-9332.202305.002