Divergent changes in microbial communities and nutrients upon forest floor humus layer of the sandy Pinus sylvestris var. mongolica plantation in northeast of China
Mengge Wu
College of Forestry, Shenyang Agricultural University, Shenyang, China
Research Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network, Changtu, China
Search for more papers by this authorZhiping Cheng
College of Forestry, Shenyang Agricultural University, Shenyang, China
Research Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network, Changtu, China
Search for more papers by this authorChunlin Jing
College of Forestry, Shenyang Agricultural University, Shenyang, China
Research Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network, Changtu, China
Search for more papers by this authorLingyu Yan
College of Forestry, Shenyang Agricultural University, Shenyang, China
Research Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network, Changtu, China
Search for more papers by this authorDeling Meng
College of Forestry, Shenyang Agricultural University, Shenyang, China
Research Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network, Changtu, China
Search for more papers by this authorWenxu Zhu
College of Forestry, Shenyang Agricultural University, Shenyang, China
Research Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network, Changtu, China
Search for more papers by this authorCorresponding Author
Yawei Wei
College of Forestry, Shenyang Agricultural University, Shenyang, China
Research Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network, Changtu, China
Correspondence
Yawei Wei, College of Forestry, Shenyang Agricultural University, Shenyang 110866, China.
Email: [email protected]
Search for more papers by this authorZhenju Chen
College of Forestry, Shenyang Agricultural University, Shenyang, China
Research Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network, Changtu, China
Search for more papers by this authorMengge Wu
College of Forestry, Shenyang Agricultural University, Shenyang, China
Research Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network, Changtu, China
Search for more papers by this authorZhiping Cheng
College of Forestry, Shenyang Agricultural University, Shenyang, China
Research Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network, Changtu, China
Search for more papers by this authorChunlin Jing
College of Forestry, Shenyang Agricultural University, Shenyang, China
Research Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network, Changtu, China
Search for more papers by this authorLingyu Yan
College of Forestry, Shenyang Agricultural University, Shenyang, China
Research Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network, Changtu, China
Search for more papers by this authorDeling Meng
College of Forestry, Shenyang Agricultural University, Shenyang, China
Research Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network, Changtu, China
Search for more papers by this authorWenxu Zhu
College of Forestry, Shenyang Agricultural University, Shenyang, China
Research Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network, Changtu, China
Search for more papers by this authorCorresponding Author
Yawei Wei
College of Forestry, Shenyang Agricultural University, Shenyang, China
Research Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network, Changtu, China
Correspondence
Yawei Wei, College of Forestry, Shenyang Agricultural University, Shenyang 110866, China.
Email: [email protected]
Search for more papers by this authorZhenju Chen
College of Forestry, Shenyang Agricultural University, Shenyang, China
Research Station of Liaohe-River Plain Forest Ecosystem, Chinese Forest Ecosystem Research Network, Changtu, China
Search for more papers by this authorAbstract
The sandy Pinus sylvestris var. mongolica plantation which is the boundary part of the Three North Shelterbelt Project in Northeast China has been well protected and prohibited disturbance for more than 10 years and thus bring about lots of forest floor litter and then humus layer (complete decomposed aboveground litter and not mixed into surface soil) during this restoration process. While humus layer accumulation could change the interface between litter and soil, its effects on litter and soil, and especially the interaction among them, were still poorly understood. Hence, three different treatments that included remove all forest floor litter and humus, double forest floor litter and humus layer, and retain forest floor litter and humus original (no treatment) were conducted, and the physicochemistry properties and microbial communities were monitored. Results showed that the humus layer increased forest floor litter decomposition rate and its total carbon, total nitrogen, and total phosphorus significantly, while it changed soil pH and nutrients differently and slightly. The abundances of bacterial groups at different taxonomic levels increased while its diversity indexes decreased in litter when the humus layer existed; however, the fungi community both in litter and soil varied insignificantly. The humus layer not only increased remarkably the proportions of common OTUs between humus and litter, humus and soil compared to litter and soil both for fungi and bacteria but also decreased the differences of the number of fungal and bacterial taxa statistics between litter and soil. It implied that the humus layer could play an important role in the recovery process of degraded forest ecosystem.
CONFLICT OF INTEREST STATEMENT
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
Open Research
DATA AVAILABILITY STATEMENT
The data that support the findings of this study are available from the corresponding author upon reasonable request.
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September 2024
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