浙江嵊泗青沙围填海综合开发项目的景观指数影响分析

Analysis of Landscape Index of the Reclamation and Comprehensive Development Project in Qingsha Shengsi,Zhejiang Province

选择青沙围填海工程作为研究案例,将其弧线堤线方案和直线轴向堤线方案进行对比,分别计算了各项景观评估指数的变化,包括景观斑块数(P)、景观多样性指数(H)、景观形状指数(LSI)、岸线形态判别指数(D)、单位海岸线支持度(S)。计算结果显示:研究区景观变化主要受人为的围填海工程和相关人造景观建设的影响,弧线堤线方案实施后,虽然占用大量的潮间带,但各项评估指数均优化,整体景观改善,使其相应功能增强。研究结果表明,弧形堤线填海方案是海岸线和滩涂资源综合开发的较好方式,该类型的围堤方案使得各项景观评估指数均朝着有利的方向变化,将有利于滨海湿地景观及环境的可持续发展。

Qinsha reclamation project is chosen as the research case.Contrasts are carried out between the arc dike line plan and the straight axial dike line plan.The changes of all landscape appraisal indexes are calculated respectively,which include landscape mottling number(P),landscape diversity index(H),landscape shape index(LSI),waterfront shape discrimination index(D) and per-unit coastline support(S).The calculated results show that the changes in the landscape of the study area are mainly influenced by artificial reclamation projects and related man-made landscape constructions.After the arc dike line plan is implemented,large amount of tidal zone will be occupied,but the appraisal indexes can be optimized and the overall landscape will be improved,making its corresponding function enhanced.The research results indicates that the arc dike line plan is better in the comprehensive development of coastline and tideland resources.This type of diking plan will make all landscape appraisal indexes change toward an advantageous direction and will also be advantageous to the sustainable development of the landscape and environment of the coastal wetland.