1：Experimental Design and Method Selection:

The study involved straw degradation experiments under four conditions: 30% RH, 60% RH, 90% RH, and UV-A + 90% RH. Methods included mass loss measurement, chemical composition analysis, thermogravimetric analysis, Fourier transform infrared spectroscopy, BIOLOG microplate assays, and scanning electron microscopy.

2：Sample Selection and Data Sources:

Rice straw was obtained from Nanjing, China, cut or ground into pieces, and oven-dried.

3：List of Experimental Equipment and Materials:

Equipment included artificial climate box (MRC-300B, Ningbo Prandt Instrument Co., Ltd, China), UV generator (ZW-P, Yishi Co., Shanghai, China), hygrothermograph (JR593, Anymetre Instrument Co., Ltd., Guangzhou, China), elemental analyzer (Multi N/C 3100 Analyzer, Analytik-Jena Group, Jena, Germany), TGA (SII-7200, Hitachi Limited, Tokyo, Japan), FTIR (J200, Thermo Fisher Scientific, Waltham, USA), BIOLOG microplates (P-96-450R-C, Genestar Limited, Shanghai, China), SEM (EVO MA, Carl Zeiss Shanghai Co. Ltd., Shanghai, China), sputter-coater (ETD-2000, Beijing Elaborate Technology Development Ltd., Beijing, China), and software (Origin Pro Version

4：0, SPSS Version 0). Materials included saturated salt solutions (MgCl2, NaBr, KNO3), and straw samples. Experimental Procedures and Operational Workflow:

Straw was treated for 150 days for humidity conditions and 180 days for UV-A + 90% RH. Mass loss was measured by oven-drying samples. Chemical composition was analyzed using Van-Soest method and elemental analysis. TGA, FTIR, BIOLOG assays, and SEM were performed as per standard protocols.

5：Data Analysis Methods:

Data were analyzed using Origin Pro and SPSS software for statistical analysis, including calculation of mass remaining, AWCD, and Shannon-Wiener Diversity Index.