<![CDATA[Environmental degradation in sub-urban areas requires restoration approaches leveraging social and religious capital. This study aims to analyze the integration of ecological values (fiqh al-bi'ah) and student (santri) participation in the "oxygen alms" movement within an eco-pesantren framework, evaluating its impact on environmental awareness and vegetation maintenance sustainability. A descriptive qualitative approach with an ecological case study design was employed. Primary data were collected through participatory observation and in-depth interviews with 8 purposively selected key informants (pesantren leadership, instructors, student coordinators, and community leaders). Secondary data included institutional records and program guidelines. Data were analyzed using interactive thematic analysis (coding, categorization, synthesis) validated through source and technique triangulation. Drawing validated through triangulation of techniques and data sources. Findings indicate that the oxygen alms movement successfully transforms environmental theology into concrete land conservation actions. Structured student participation via ecological duty rosters maintained an initial plant survival rate of approximately 85%. Furthermore, the initiative shifted Islamic philanthropic paradigms from short-term material aid toward sustainable ecological investments. The integration of religious ethics and active student participation ensures long-term vegetation maintenance, addressing a common failure in conventional reforestation projects. The study highlights the need for institutionalizing fiqh al-bi'ah curricula and expanding green waqf frameworks in Islamic educational systems.]]>
