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Greenhouse cultivation induced soil profile acidification, altered carbon sequestration and bacterial communities in natural barren land: A case study on the Qinghai-Tibet Plateau

文献类型： 外文期刊

作者： Wang, Shuo 1 ; Li, Shuailin 1 ; Zhang, Kai 3 ; Zeng, Xiuli 3 ; Koyama, Takuma 4 ; Lewis, Arthur 4 ; Yu, Wantai 1 ; Ma, Qiang 1 ;

作者机构： 1.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China

2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

3.Tibet Acad Agr & Anim Husb Sci, Inst Vegetables, Lhasa 850032, Xizang, Peoples R China

4.Univ Sydney, Sydney Inst Agr, Sch Life & Environm Sci, Camden, NSW 2570, Australia

5.Chinese Acad Sci, CAS Key Lab Forest Ecol & Silviculture, Inst Appl Ecol, Shenyang, Peoples R China

关键词： Land use change; C degradation; N cycling; Soil profile; Bacterial community; The Qinghai-Tibet plateau

期刊名称：APPLIED SOIL ECOLOGY （ 影响因子：5.0； 五年影响因子：5.4 ）

ISSN： 0929-1393

年卷期： 2025 年 216 卷

页码：

收录情况： SCI

摘要： Greenhouse cultivation is increasingly replacing natural land on the Qinghai-Tibet Plateau. However, its effects on key soil functions remain unclear, particularly in deeper layers. Based on a representative cultivation demonstration site, we investigated the effects of greenhouse cultivation on soil physicochemical properties, bacterial community structure, and functions related to carbon (C) degradation and nitrogen (N) cycling across the 0-60 cm soil profile. This study included three treatments: natural barren land (BL), 14 years of greenhouse grape (Vitis vinifera) cultivation (Gg), and 4 years of grape following 10 years of vegetable cultivation (Gvg). Compared with BL, Gg and Gvg lowered pH from 7.51 to 5.20 and 5.85 and increased electrical conductivity (EC) by 21.4- and 3.4-fold throughout the profile, respectively. Only Gg increased soil organic carbon (SOC) by 1.0-2.4 times in the topsoil (0-20 and 20-40 cm), but reduced it to 63 % of BL in the subsoil (40-60 cm). Additionally, Gg reduced bacterial alpha diversity, enhanced fermentation- and xylanolysis-related genes, and suppressed nitrite-oxidizing and nitrifying genes, whereas both Gg and Gvg reduced denitrification genes across the profile. Overall, greenhouse cultivation caused soil acidification and salinization, but increased SOC and nutrient availability, mainly attributed to excessive fertilizer input. These soil changes were closely associated with shifts in bacterial community structure and potential functions related to C degradation and N cycling. Our findings highlight the significant effect of greenhouse cultivation on abiotic and biotic properties across soil profiles, suggesting that improved fertilization and management are critical for sustainable use of vulnerable plateau ecosystems.

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