This paper takes Jiuzhaigou Nature Reserve as an example tostudy and constructthe landscape visual absorption evaluation system (VAC) based on biophysical factors.It uses Delphi method to establish the weight of each index,and analyzes the influence of slope,aspect,relief amplitude of terrain,vegetation richness,vegetation pattern and soil stability on landscape visual absorption.The results show that visitors' visual experiences in different regions of Jiuzhaigou Nature Reserve are vastly different,with the VAC of Naxizhai and Shuzhengzhai being the greatest.The VAC of different sections along the middle distance range (1500m) is relatively stable and the value is higher than the close distance range (500m).The most direct influencing factor is the richness of vegetation,that is,the richer the composition of the plant community,the more complex its structure,the higher the VAC.The purpose of giving an objective assessment of VAC is to guide relevant departments to make better decisions on landscape planning and development.%以九寨沟自然保护区为例,基于生物物理因素,提出景观视觉吸收力评价体系(VAC).运用Delphi法建立各指标权重,分析了景观基底中坡度、坡向、地形起伏度、植被丰富度、植被格局和土壤稳定性六要素对景观视觉吸收力的影响.结果发现,保护区不同区域带给游客的视觉感受差异很大,其中以纳西寨和树正寨区域VAC最好;公路沿线的中景范围不同路段VAC变化较为稳定,且较近景范围的值高.景观视觉吸收力最直接的影响因素是植被丰富度,植物群落成分越丰富、结构越复杂,VAC也越高.客观评估景观视觉吸收力可以指导相关部门更好地进行景观规划和开发决策.
展开▼
