Abstract
This study investigates the drivers and impacts of land use and land cover (LULC) changes on ecosystem services provided by the Philippine watersheds, aiming to enhance understanding of sustainable watershed management and land use planning in the country. A systematic literature review assessed LULC change studies from 2013 to 2022. Notably, among the category of ecosystem services, regulating services such as hydrologic regulation and soil erosion control received significant attention, while provisioning services, supporting services and cultural services received comparatively less attention. However, in general, considering the trend of watershed degradation in the country, the studies conducted linking the impacts of land use and land cover change on watershed ecosystem services are relatively few. Also, the impacts of land use and land cover change on watershed ecosystem services were not elaborately explored and mostly centered on either a single or selected ecosystem services. This suggests that a more holistic approach in assessing the impacts of land use and land cover change on the watershed ecosystem services can be considered for future studies. The primary drivers of LULC change were agricultural expansion, urbanization and human settlements, population factors, forest conversion, agricultural demand and profit motives. Among these, urbanization and human settlements were most frequently mentioned. The main impacts of LULC changes on watershed ecosystem services were associated with hydrologic processes. These findings have implications for future research, land use planning, and decision-making processes, aiming to advance sustainable watershed management and preserve ecosystem services.
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