Demand for Ecosystem Services Drive Large-Scale Shifts in Land-Use in Tropical Mountainous Watersheds Prone to Landslides

نویسندگان

چکیده

An increasing frequency of extreme atmospheric events is challenging our basic knowledge about the resilience mechanisms that mediate response small mountainous watersheds (SMW) to landslides, including production water-derived ecosystem services (WES). We hypothesized demand for WES increases connectivity between lowland and upland regions, decreases heterogeneity SMW. Focusing on four in Central Andes Colombia combining “site-specific knowledge”, historic land cover maps (1970s 1980s), open, analysis-ready remotely sensed data (GLAD Landsat ARD; 1990–2000), we addressed three questions. Over roughly 120 years, site-specific revealed an diverse WES, as well variation among supply WES. At watershed-scales, water balances—a surrogate ES flows—exhibited complex relationships with forest cover. Fractional (pi) aggregation (AIi) varied current sets, but general showed non-linear elevation slope. In set (1990–2000), differences number significant, linear models explaining pi time, suggest slope may play a more important role than change. found ample evidence combined effect two metrics, which would be consistent strategies directed mitigate landslide-associated risks. Overall, work shows strong feedbacks areas, raising questions sustainable

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ژورنال

عنوان ژورنال: Remote Sensing

سال: 2022

ISSN: ['2315-4632', '2315-4675']

DOI: https://doi.org/10.3390/rs14133097