Integrated assessment of the impacts of land use change on ecosystem services and livelihood vulnerability in Silang-Santa Rosa subwatershed
2018
Eugenio, E.A.
Silang-Santa Rosa subwatershed is one of the Philippine subwatersheds at risk of degradation because of environmental changes in the past decades. To determine environmental changes, historical land use maps in the subwatershed were collected and analyzed. Households' perceptions on these changes were gathered through field survey in the upland, midland, and shoreland villages. Complementary approaches were used to analyze the survey data; i.e. factor analysis to identify environmental degradation affecting the respondents; cluster analysis to identify the typology of livelihood vulnerabilities; and conjoint analysis to identify respondents' adaptation preferences. The identified environmental degradations that affect livelihoods include pollution, sedimentation, and high temperature. The most vulnerable livelihood to environmental degradation includes self-employment and family business. Many respondents are willing to participate in conservation, i.e. tree planting. In addition to respondent's initiative, the LGUs also have programs, projects and ordinances that contribute to conservation of the environment. The policy analysis reveals the need to improve compliance to zoning ordinance, awareness on solid waste management/waste segregation, and strategic approach to motivate communities' participation.
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