关键词: 径级, 质量损失率, 养分释放

Abstract: By defining the concept of landscape ecological health of tourist islands (LEHTI), a LEHTI evaluation system was established with the model of pressure-stateresponse, and an ideal health state value was determined. In addition, by adopting the methods of entropy weight and gray correlation fuzzy, the evaluation results were calculated and classified into five grades, according to their distances to the ideal value. Based on these results, the specific damage of tourist island landscape ecosystem as well as the main stress factors and the evolution trend behind the damage were identified, which could provide scientific basis for the subsequent ecological restoration and optimizing measures. Taking the representative tourist island of Mazu Holy Land as a case, and with the support of RS and GIS techniques, the satellite remote sensing and socioeconomic survey data of 1993, 1999, 2005, and 2009 were integrated and emonstrated. The process and results of this case study showed that the LEHTI evaluation system and its methods were feasible, and could provide solid basis for resource and environment management.

Key words: diameter size, mass loss rate, nutrient releasing.