基于层次分析法的秦岭地区大熊猫栖息地质量评价   总被引：6，自引：0，他引：6  

李军锋  李天文  金学林  刘学军  汤国安 《山地学报》2005,23(6):694-701

栖息地是大熊猫存在与否的决定因素，栖息地保护的重要性远比对大熊猫个体的保护更加重要，这是保护大熊猫必须采取的长远措施。以陕西省第三次大熊猫调查数据为基础，首先确立了影响大熊猫栖息地质量的7个指标：森林起源，乔木郁闭度，灌木盖度，竹子生长状况，竹子盖度，坡度和坡向，然后采用层次分析法计算所确立的7个评价指标的权重，并结合GIS空间叠置分析方法对7个评价指标进行叠加，获得了洋县大熊猫栖息地质量分级图。得到了以下结论：最适宜区和适宜区主要分布在调查区的东北部，不太适宜区和不适宜区分布在调查区的西部，并且自东向西逐渐变差。整体而言，调查区内大熊猫栖息地质量状况良好，适宜大熊猫的生存与繁衍。  相似文献   

冰雪灾害对北京城市交通影响的预警评估方法   总被引：1，自引：0，他引：1       下载免费PDF全文

刘勇洪  房小怡  扈海波  谢璞 《应用气象学报》2013,24(3):373-379

依据灾害学原理,利用1952—2011年北京历史冰雪灾情资料分析构建了冰雪灾害对北京城市交通运行的预警评估指标体系:发生时间、冰雪强度、交通脆弱度、预警能力和减灾能力,利用层次分析法构建了城市冰雪灾害预警评估模型和评判标准,并对北京历史上38次冰雪灾害事件进行了影响评估及研究分析。研究结果表明:各预警评估因子对冰雪灾害影响贡献的权重分别为冰雪强度0.4404、交通脆弱度0.2789、减灾能力0.1797、发生时间0.05264、预警能力0.0484,建立的预警评估模型准确率达76%。冰雪强度不再是唯一的决定性因子,而是与城市化背景下的多种因素共同决定着冰雪灾害对北京城市交通运行的影响程度。  相似文献   

Ecological Sensitivity Assessment of the Southeastern Qinghai-Tibet Plateau using GIS and AHP—A Case Study of the Nyingchi Region     

WANG Yongxiang  WEI Jiaxuan  ZHOU Juan  YANG Jiajia  XU Yuanyuan  CHEN Yuxin  HAO Jiangcheng  CHENG Wuxue 《资源与生态学报(英文版)》2023,14(1):158-166

This paper took the Nyingchi area in southeastern Tibet Autonomous Region of China as the research area, and selected five indicators of elevation, slope, slope direction, normalized difference vegetation index (NDVI) and water body as the evaluation system based on the current situation of domestic and foreign research and field investigation. The indicators were analyzed by the AHP method for weighting, and then an ArcGIS overlay analysis was applied. The results show that the ecological sensitivity of the Nyingchi region is generally increasing from the south of Nyingchi to the north of Nyingchi. The northern, western and southwestern parts of Nyingchi are extremely sensitive or highly sensitive, while the southern part is mostly insensitive or mildly sensitive ecologically. The proportions of areas for each sensitivity level are: not sensitive 54.81%, light sensitive 11.97%, moderately sensitive 10.34%, highly sensitive 8.65%, and extremely sensitive 14.23%. The results indicate that the overall ecological sensitivity of the Nyingchi region is low and this region is performing well with respect to ecological environmental protection. This study can provide some suggestions for targeted improvements of the ecological environmental protection in the Nyingchi region and even in the Tibetan Plateau region.  相似文献   

Evaluation of Rural Tourism Resources based on the Tourists Perspective: A Case Study of Lanzhou City,China     

PU Lili  LU Chengpeng  CHEN Xingpeng 《资源与生态学报(英文版)》2022,13(6):1087-1097

Rural tourism has become a hot spot in China's tourism development. Based on the AHP model and the comprehensive evaluation method of fuzzy cognition, this paper builds an evaluation system for the evaluation of rural tourism resources, including resource value, environmental factors, reception conditions with three criterion layers, and 25 evaluation factors. We recovered 574 valid questionnaires through two online forms and field research in Lanzhou city, and then used them to complete the empirical analysis. The results show four main aspects of the tourists' perspective on rural tourism resources. Firstly, rural tourists are concerned about higher service facilities. The evaluation of rural tourism resources pays more attention to the reception conditions, and tourists pay more attention to the facilities of the reception conditions. In addition, the reception condition value accounts for a more concentrated 8-10 points (61.4%), which is higher than environmental elements (58.87%) and the value of the resource itself (54.26%). Secondly, tourists' attention to rural tourism resources mainly focuses on the pleasurable (0.1152), tour line design (0.1014), experience (0.0765), ornamental (0.0747) and other aspects. Thirdly, the degree of cognition mainly focuses on nature (4508), environmental safety (4469), pleasantness (4387), accommodation conditions (4367), tour line design (4363) and other aspects of the rural tourism resources. Fourthly, the cognition of rural tourism resources is basically given priority with 6-9 points, and environmental factors accounted for the highest portion. However, rural tourists have higher expectations for the popularization and education of rural tourism resources, but the sense of acquisition is relatively low. Through the further improvement and improvement of the naturalness of environmental resources, environmental safety of reception conditions, and the enjoyment of external traffic and resource value, the overall benefit of rural tourism resources is maximized. The results of this study can provide reference for the theoretical foundation of rural tourism resources.  相似文献   

小型城镇可持续发展评价模型研究     

姜锐  马庆荣  陈德胜 《测绘与空间地理信息》2022,45(1):50-54

城市是社会生产力发展的产物,是人类文明的标志。可持续发展理论自诞生以后就成为各个学科研究的焦点和前沿课题,城市可持续发展的内涵是一个城市经济发展、社会进步、生态环境保护三者保持高度和谐的过程。本文针对小型城镇特点,从可持续发展的角度,设计综合评价指标体系,该项指标体系涵盖了经济、社会和环境3个维度的基础指标,总体上反映了小型城镇各方面发展状况。在此基础上,采用层次分析法(AHP)构建小型城镇的可持续发展评价模型,借以系统地评价小型城镇长时间序列的城镇发展可持续性的变化情况,并以海南省澄迈县为例进行理论验证。  相似文献   

Assessment of shallow groundwater vulnerability in Dahei River Plain based on AHP and DRASTIC          下载免费PDF全文

ZHU Yu-chen  ZHANG Yi-long  HAO Qi-chen 《地下水科学与工程》2017,5(3):266-277

Based on the special hydrogeological conditions of the Dahei River Plain in the Inner Mongolia area, assessment of shallow groundwater vulnerability is conducted based on DRASTIC model. Each evaluation indicator weight is determined by using analytic hierarchy process (AHP). The most important indicators are lithology in soil media and vadose zone. Assessment model of shallow groundwater vulnerability of the Dahei River plain is constructed. Distribution map of vulnerability index in this area is made with the spatial analysis function of ARCGIS. The results show that the particularly sensitive area is the piedmont of the Daqing Mountain, where the upstream place of the groundwater and the south-central place of the plain has the lowest vulnerability. The assessment results are more in accordance with the actual vulnerability conditions of this area by using analytic hierarchy process, and is helpful for groundwater protection.  相似文献   

基于耦合协调度模型的广西沿海地区陆海统筹度评价          下载免费PDF全文

李梦  胡宝清  范航清  邱广龙 《海洋开发与管理》2017,34(7):33-39

为实现更科学、合理、高效地统筹发展陆海经济,文章从资源利用、经济效益、科技支持、生态环境4个角度,通过构建陆海统筹度评价指标体系,利用层次分析法确定权重,并用耦合协调度模型计算陆海统筹度,以2005—2014年广西沿海地区为例,进行陆海统筹度定量评价。结果表明:(1)2005—2014年广西沿海地区综合能力都呈上升趋势,但是海陆发展呈现出不同的增长态势。(2)海域系统经济增长迅速,但受到资源利用、科技支持、生态环境保护能力的制约,综合得分呈波动缓慢上升的态势。(3)海洋系统与陆域系统之间统筹度逐渐上升,表明政府对陆海统筹协调发展的重视逐渐加大。通过耦合协调度模型定量评价区域的耦合协调发展度,为区域发展规划的制定提供了依据,对地区的建设与发展具有重大的意义。  相似文献   

用层次分析法评价济南市生活垃圾处理方案     

高发车  陈娟  杨秀禄 《山东国土资源》2011,27(1):20-22

以济南市生活垃圾处理技术为研究对象,根据济南市生活垃圾的特性,以选择科学合理的处理方案为目标层,构建层次结构模型。运用两两比较的方法,对指标进行归一化处理,对各个判断矩阵进行一致性检验以确定各准则层对目标层的权重以及各方案层对准则层的权重,并进行综合评价,对拟选用的4种生活垃圾的处理方案进行了比较。结果表明,采用经过分选后,对热值高的可燃烧物进行焚烧处理,对不可燃物以及焚烧残渣进行卫生填理的方案为最优的方案。  相似文献