Effects of Home-field Advantage of Leaf Litter Decomposition on Soil Humus in Wudalianchi Volcano Kipuka

JIANG Mingyue; YANG Fan; HUANG Qingyang; XIE Lihong; CAO Hongjie; SHA Gang

doi:10.11924/j.issn.1000-6850.casb2025-0933

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Chin Agric Sci Bull ›› 2026, Vol. 42 ›› Issue (10) : 117-123. DOI: 10.11924/j.issn.1000-6850.casb2025-0933

Effects of Home-field Advantage of Leaf Litter Decomposition on Soil Humus in Wudalianchi Volcano Kipuka

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Abstract

This study focused on the differential effects of plant leaf litter types on soil humus composition and content. Wudalianchi volcano kipuka, a special habitat, was selected as the sample site, the method of in situ leaf litter bag was adopted to carry out the cavitation experiment to study the effects of leaf litter of different species (Populus davidiana, Betula platyphylla and Larix gmeliniion) on soil humus in coniferous forest and broad-leaved forest. The responses of extractable humus, humic acid and fulvic acid contents in soil, and humic acid/fulvic acid ratio to the home field advantage during leaf litter decomposition were analyzed. The results showed that: (1) when leaf litter decomposed away field from home field, it changed the variation trend of soil humus composition; (2) forest type, leaf litter species, decomposition time and their interactions all had significant effects on the content of soil humus components; (3) at the beginning of decomposition, the EHS and HA content of the home field, FA content of the away field and humic acid/fulvic acid ratio of the home field soil under the three leaf litters were as follows: Populus davidiana>Betula platyphylla>Larix gmelinii; the EHS, HA, HM, humic acid/fulvic acid ratio and PQ values of the away field soil under the three leaf litters were as follows: Larix gmelinii> Betula platyphylla> Populus davidiana; (4) at the end of decomposition, the FA content of home field and the HM content of away field of the soil under the three leaf litters were as follows: Larix gmelinii> Betula platyphylla> Populus davidiana, both of the home and away field of EHS, HA, humic acid/fulvic acid ratio and PQ values of soil under the three leaf litters were as follows: Betula platyphylla> Larix gmelinii> Populus davidiana. To sum up, the effects of the decomposition of three kinds of leaf litter on each component of soil humus and humification in the Wudalianchi volcano kipuka are not all home field advantages. All the components of soil humus under leaf litter of Betula platyphylla leaf litter show home field>away field, with home field advantage, the extractable humus and humin from the soil under the Populus davidiana leaf litter show that the home field is higher than the away field.

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Wudalianchi volcano / kipuka / leaf litter / soil humus / home-field advantage

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JIANG Mingyue , YANG Fan , HUANG Qingyang , et al . Effects of Home-field Advantage of Leaf Litter Decomposition on Soil Humus in Wudalianchi Volcano Kipuka[J]. Chinese Agricultural Science Bulletin. 2026, 42(10): 117-123 https://doi.org/10.11924/j.issn.1000-6850.casb2025-0933

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