| 桂林会仙岩溶湿地土地利用方式对球囊霉素相关土壤蛋白分布的影响 |
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| 关键词:karst wetland glomalin-rated soil protein (GRSP) land use type soil protease soil factors |
| 基金项目:广西自然科学基金项目(编号: 2018GXNSFAA050069; 2020GXNSFBA297048);国家自然科学基金项目(编号: 31760162; 41361057);广西岩溶动力学重大科技创新基地开放课题资助项目(编号: KDL＆Guangxi202004);广西重点研发计划项目(编号: 桂科AB21220057);广西漓江流域景观资源保育与可持续利用重点实验室研究基金(编号: LRCSU21K0203) |
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| Effects of Land Use Type on Distribution of Glomalin-related Soil Protein in the Huixian Karst Wetland, Guilin |
| To identify the effects of land use type on the distribution of glomalin-related soil protein in the Huixian karst wetland, we selected five land use types (marsh wetland, reclaimed paddy field, reclaimed dry farmland, orchard and abandoned land) and examined soil profile distribution patterns and influencing factors of glomalin-related soil protein. Soil samples were collected from depths of 0–10 cm, 10–20 cm, and 20–40 cm, re-spectively. The results showed that total glomalin-related soil protein content ranges from 1.08～3.35 mg/g, accounting for 12.33%～19.73% of soil organic carbon content. Glomalin-related soil protein is, therefore, regarded as a major carbon pool in the soil of the Huixian karst wetland. Significant differences in glomalin-related soil protein content were observed among the land use types and soil layers (P<0.05). Glomalin-related soil protein exhibits obvious vertical distribution pattern, which decreases with an increase in soil depth. GRSP and EE-GRSP of marsh wetlands was significantly higher than the content with the other four land use types. GRSP was directly related to soil protease, soil organic carbon, and total nitrogen (P＜0.01), and had a significant positive relationship with available nitrogen, available phosphorus, clay and silt; E-GRSP was directly related to soil organic carbon and total nitrogen (P＜0.01), and had a significant positive relationship with soil protease and clay. Principal component analysis showed that silt, soil organic carbon, total nitrogen and available nitrogen were the key factors affecting distribution characteristics of glomus-associated proteins and reflected soil nutrition status in the Huixian karst wetland. Glomalin-related soil protein in soils of the Huixian karst wetland is important for soil carbon sequestration. |
| SHEN Yu-yi,TENG Qiu-mei,XU Guang-ping,SUN Ying-jie,ZHANG De-nan,MOU Zhi-yi,ZHOU Long-wu.2022.Effects of Land Use Type on Distribution of Glomalin-related Soil Protein in the Huixian Karst Wetland, Guilin[J].Acta Geoscientica Sinica,43(4):491-501. |
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