Chai Li-Wei, Liu Meng-Jiao, Jiang Da-Lin, Fan Hao, Cao Xiao-Feng, Huang Yi
State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China.
Shenzhen Graduate School, Peking University, Shenzhen 518055, China.
Huan Jing Ke Xue. 2016 Dec 8;37(12):4806-4814. doi: 10.13227/j.hjkx.201606113.
Glomalin-related soil proteins (GRSP), which has been used as a presumable biological indicator of soil quality, is of vital ecological importance. In this research, we tested the GRSP content and physicochemical property of soils collected in mountain, urban and suburb areas of Beijing City. Besides, the fluorescence property of GRSP was also studied by using EEM-PARAFAC. The results showed that GRSP could be decomposed into five compounds, terrestrial humic-like substances UVA, terrestrial humic-like substances UVC, oxidized quinones, soil fulvic acid and amino acids. The GRSP content and protein-like fluorescence substances in urban and suburb areas significant decreased and oxidized quinones content elevated in comparison with those in mountain area. The physicochemical property was also shaped by urbanization. Compare to mountain area, moisture content, total organic matters and total nitrogen significantly decreased in urban area soil and suburb area. GRSP content, terrestrial humic-like substances UVA and oxidized quinones content showed significant correlation with soil organic matter and total nitrogen. Base on that, an integrated index system mainly consisting of GRSP concentration and C1 component and C3 component was recommended to evaluate the soil health status.
球囊霉素相关土壤蛋白（GRSP）作为一种可能的土壤质量生物指标，具有至关重要的生态意义。本研究中，我们测试了北京市山区、城区和郊区采集土壤的GRSP含量和理化性质。此外，还利用EEM-PARAFAC研究了GRSP的荧光特性。结果表明，GRSP可分解为五种化合物，即陆地腐殖质类物质UVA、陆地腐殖质类物质UVC、氧化醌、土壤富里酸和氨基酸。与山区相比，城区和郊区的GRSP含量及类蛋白荧光物质显著降低，氧化醌含量升高。城市化也塑造了土壤的理化性质。与山区相比，城区和郊区土壤的含水量、总有机质和总氮显著降低。GRSP含量、陆地腐殖质类物质UVA和氧化醌含量与土壤有机质和总氮显著相关。基于此，建议构建一个主要由GRSP浓度、C1组分和C3组分组成的综合指标体系来评估土壤健康状况。
