摘要
利用Conefor 2.6软件计算有林地与灌林地的景观连通性,选取生态源地,以坡度、地层岩性、土壤类型、归一化植被指数、年平均降雨量、年平均融雪量、距道路距离、距采矿用地距离8个地质灾害敏感因子评价地质灾害敏感性.利用评价结果对阻力面进行修正,基于电路理论,提取生态廊道、识别生态夹点、生态障碍点,构建生态安全格局,提出生态保护和地质灾害防治策略.结果表明:伊犁河谷地质灾害敏感性高值区主要集中在道路及河流附近,其中,西南部谷盆地地质灾害敏感性最高;37个生态源地主要集中在山区;75条最优生态廊道和53处生态夹点多分布于建设用地周围,主要用地类型为草地;9个生态障碍点大多位于最优廊道上,部分紧邻生态夹点.
The connectivity between forested and irrigated landscapes is calculated using Conefor 2.6 software,and the ecological source areas are selected.The sensitivity of geological hazards is evaluated from 8 geological hazard sensitive factors,including slope,stratigraphic lithology,soil types,normalized vegetation indexes,average annual rainfall amount,average annual snowmelt amount,distance from road and distance from mining land.The resistance surface is modified using the evaluation results.The circuit theory is used to extract ecological corridors,identify ecological pinch points and ecological obstacles,construct ecological security patterns,and ecological protection and geological disaster prevention strategies are put forward.The results show that,the high sensitivity areas to geological hazards in Yili River Valley are mainly located near roads and rivers,and the southwest valley basin has the highest geological hazard sensitivity.37 ecological source areas are mainly concentrated in mountainous areas,75 optimal ecological corridors and 53 ecological pinch points mostly distributed around construction land where the main land type is grassland,and 9 ecological obstacles are mostly located on the optimal corridors,some of which are close to ecological pinch points.
作者
余芳瑞
王宏卫
钱田田
谢玲
魏一鸣
YU Fanrui;WANG Hongwei;QIAN Tiantian;XIE Ling;WEI Yiming(College of Geography and Remote Sensing Sciences,Xinjiang University,Urumqi 830046,China;Key Laboratory of Xinjiang Oasis Ecological Autonomous Region,Xinjiang University,Urumqi 830046,China)
出处
《华侨大学学报（自然科学版）》
CAS
2023年第4期510-517,共8页
Journal of Huaqiao University(Natural Science)
基金
第三次新疆综合科学考察资助项目(2021xjkk0902)。
关键词
生态安全格局
地质灾害敏感性
电路理论
伊犁河谷
ecological security pattern
geological hazard sensitivity
circuit theory
Yili River Valley
