Landscape Change Impacts on Ecosystem Services

• Main Authors: Tao Huang, 黃韜
• Other Authors: Yu-Pin Lin
• Format: Others
• Language: en_US
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/22809549044804323256

碩士 === 國立臺灣大學 === 生物環境系統工程學研究所 === 100 === Ecosystem provides a wide range of benefits to people; however, human-driven changes in land use typically resulted in large threats on biodiversity and ecosystem service supply. For sustaining the provision of vital ecosystem services, efficient land use management is necessary. The study used CLUE model to predict the changes of land use/land cover, then using landscape metrics to quantify land composition and configuration. Finally, InVEST, a spatial explicit model, was applied to estimate the amount and spatial patterns of ecosystem services under different land use/ land cover planning scenarios. The concept of integrating ecosystem services into conservation planning has been discussed in many studies; however, few previous studies put the concept of ecosystem service protected area into practice due to the gap between theory and practice. The aim of the study is to integrate the concept of ecosystem services in landscape planning, providing a new approach on future landscape management and related policy making. The study took Wutu watershed as case study. Based on CLUE modeling, the study estimated that there was decrease in the area of forest and increase in the area of urbanized land use after 2008. Patch Analyst modeling results show that the mean patch sizes and Interspersion and Juxtaposition Index of forest decreased in simulation period, meaning the fragmentation and uneven distribution of the habitats. InVEST simulation results show that annual value of carbon storage, habitat quality, nutrient retention, and soil retention decreased in the study area due to the increase of urban areas. Water yield is the only ecosystem service that not decreased in the study area. The study also applied InVEST to two land use scenarios: one with ecosystem service protected area and the other one without ecosystem service protected area. Compared with the scenario without protected area, the scenario involving ecosystem service protected area had higher ecosystem service values of habitat quality, nitrogen retention and phosphorus retention, lower values of soil retention, and same values of carbon storage and water yield.