松花江流域哈尔滨段景观生态风险评价  

Landscape ecological risk assessment of Harbin section of Songhua River basin

作　　者：张玉娟[1] 曲建光[1] 叶猛猛 ZHANG Yujuan;QU Jianguang;YE Mengmeng(College of Surveying and Mapping Engineering,Heilongjiang Institute of Technology,Harbin,Heilongjiang 150050,China)

机构地区：[1]黑龙江工程学院测绘工程学院,黑龙江哈尔滨150050

出　　处：《福州大学学报（自然科学版）》2020年第3期361-367,共7页Journal of Fuzhou University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(41701198);黑龙江省省属本科高校基本科研业务费项目(2019CX02);黑龙江工程学院博士科研启动基金(2017BJ03)。

摘　　要：以松花江流域哈尔滨段为研究区域,通过景观易损度指数及景观类型面积比重结合层次分析权重赋值法构建景观生态风险指数,对区域进行景观生态风险的时空变化特征及空间自相关关系进行研究.结果表明:①20年间,松花江流域哈尔滨段景观生态风险整体上呈现先增加后减小的变化,高风险区和较高风险区面积先增加后减少,低风险区、较低风险区和中等风险区面积先减少后增加;②三期景观生态风险全局自相关莫兰指数分别为0.5125、0.5552和0.6055,表现为较强的正相关,土地生态风险呈聚类模式的空间分布;③20年间,区域景观生态风险高-高聚集、低-低聚集分布区域并未发生较大变化,但逐渐表现为较分散的分布;④三期景观生态风险空间相关性主要受结构性因素影响,且影响程度逐渐加深.Taking the Songhuajiang River basin(Harbin section)as the research area.The landscape ecological risk index was constructed by combining the landscape vulnerability index and the proportion of landscape type area with the AHP weight assignment method,and the spatial and temporal change characteristics and spatial autocorrelation of the regional landscape ecological risk were studied.The results show that in the past 20 years,the landscape ecological risk of Songhuajiang River basin(Harbin section)has increased first and then decreased,the area of high-risk area and high-risk area has increased first and then decreased,and the area of low-risk area,low-risk area and medium-risk area has decreased first and then increased.The overall autocorrelation Moran index of landscape ecological risk in the third stage is 0.5125,0.5552 and 0.6055,respectively,shows a strong positive correlation,and the land ecological risk is distributed in the space in the clustering mode.In the past 20 years,the regional landscape ecological risk has not changed greatly in the areas of high-high aggregation and low oligomeric aggregation,but gradually shows a relatively scattered distribution.The spatial correlation of the three stages of landscape ecological risk is mainly affected by structural factors,and the degree is gradually deepened.

关 键 词：松花江流域 哈尔滨段 景观生态风险 地统计学 空间关联格局 

分 类 号：P901[天文地球—自然地理学]