The Cordillera Administrative Region (CAR) has a diverse landscape scenery and contains a high biodiversity. It contains the largest mountain range in the Philippines and is origin of major rivers in the Region that support hydroelectric power plants and irrigation water supply of the community’s livelihood on rice and vegetable farming production. Farming systems or agroecosystem practices act as a cause to land use change in the region. The study evaluate the interdependencies between agroecosystem and natural ecosystem to supply ecosystem services for livelihood of the indigenous communities in the Cordillera. It aims to address the following objectives to: (i) assess the indigenous people’s perspective on sustainability and ecosystem services and how does this perspective influence decision making in ecosystem management; (ii) evaluate the current and future potential of hydrologic ecosystem services provided by the North Luzon Watershed for agricultural production; (iii) analyze the physical supply of ES; and (iv) identify the trade-offs between ecosystem services and land use change in the Cordillera Region.