珠海市旅游用地生态环境影响研究

从生态环境质量、结构、功能3方面构建旅游用地演变对生态环境影响的综合评价指标体系,利用多目标线性加权函数法定量评价近23a来研究区旅游用地时空演变对生态环境正面和负面的影响。计算结果显示:珠海市旅游用地变化对生态环境综合影响指数为-0.24,斗门区、金湾区和香洲区分别为-0.28、-0.13和-0.29。表明珠海市旅游用地变化对生态环境的总体影响是负面的。其深层的影响机制是:首先,旅游用地空间分布与地类结构演变的欠合理;其次,旅游用地规模在持续快速增长的同时忽视了生态内涵建设,旅游用地复合化开发层次偏低。

Impacts of Tourism Land Evolution on Eco-environment in Zhuhai

Comprehensive evaluation index system was constructed from the aspects of eco-environmental quality,eco-environmental structure and eco-environmental functions to quantitatively evaluate the impact of tourism land use change on ecological environment in Zhuhai City in the last 23 years.The calculation results show that comprehensive index of the impact of tourism land use change on ecological environmental in Zhuhai City as a whole was-0.24,and the indexes in Districts of Doumen,Jinwan and Xiangzhou were-0.28,-0.13 and-0.29 respectively,that indicated that the overall impact of tourism land use change on the ecological environment was negative in Zhuhai City.Moreover,the complex mechanisms of the impact were revealed:Firstly,the spatial distribution and types of tourism land use presented unreasonable evolution trend.Secondly,the comprehensive development levels of land use were low because of ignoring the ecological connotation construction in the rapid growth of tourism land use scale.