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- From the system of evaluation system and the model of ecological security, this paper researches the goal and task for applying data mining in expert system of regional ecological security assessment. 摘要从生态安全模型与评价指标体系入手,研究了数据挖掘技术在区域生态安全评价专家系统中的应用目标与任务;
- regional ecological security assessment 区域生态安全评价
- Study on Ecological Security Assessment of Shandong Province 山东省生态安全评价研究
- Study of Ecological Security Assessment for Jinan Based on Reusable PSR Model 基于改进PSR模型的济南市生态安全评价研究
- Studies on the Spatial-temporal Changes of Eco-efficiency of Land Use and Ecological Security Assessment Based on 3S 3S支持下土地利用生态效益时空差异与生态安全评价
- Keywords ecological safety;ecological security assessment;zonality;ecosphere structure;arid; 生态安全;生态安全评价;地带性;生态圈层结构;干旱区;
- ecological security assessment 生态安全评价
- Results Landscape scale is the right scale to assess regional ecological Security. 结果景观尺度是区域生态安全评价的适宜尺度。
- Yulin District and Hengshan County were taken as the cases, and ecological security index system was constructed to assess the security levels of the two regions. 选择了榆林市和横山县两个行政单元,针对区域特征,构建了不同尺度上的生态安全指标体系,利用层次分析法,对不同尺度上生态安全的空间分异进行了研究。
- Regional ecological security research has the macroscopic and target characteristics, and the assessment standards are relative and in development. 区域生态安全研究具有宏观性和针对性的特点,评价标准具有相对性和发展性。
- This paper applies grey associative analysis into assessment of ecological security, establishes the reference sequence, compare sequence and the assessment level. 将灰关联方法应用于生态安全评价,分别建立了生态安全评价的参考序列、比较序列和评判等级。
- The status quo of China's forestry indicates that forestry development does not meet the requirement for maintaining ecological security. 林业现状说明,林业发展与维护生态安全的要求极不适应。
- PDSA provides a complete toolset of on-line dynamic security assessment for large-scale power system, based on parallel simulation platform. PDSA以并行计算平台作为运行支撑平台,提供了大区互联电网的在线动态安全评估和预警的整套工具包。
- And then the method of ecological security was applied to the case of Kaifeng city and some suggestions on ecological security construction were put forward. 在此基础上,以开封市为研究对象,对开封旅游的生态安全进行了定量的研究,提出了开封市旅游生态安全建设的若干建议。
- This experimental study on the artificial fingers will have considerable impact on security assessment of biometric systems. 这个关于人造手指的实验研究将会对生物辨识系统的安全衡鑑与评估造成可观的冲击。
- The main causes for the deterioration of land ecological security are unreasonable reclaimation、 denudation, overgrazing and the extensive farming. 滥垦、滥伐、过度放牧以及粗放经营的生产方式是导致该地区土地生态环境安全状况不断下降的主要原因。
- Hyphantria cunea invaded Jinan for the first time in 2007, and has caused serious damage to city scape and ecological security of Jinan. 摘要2007年美国白蛾首次入侵济南市,对城市景观和生态安全构成严重威胁。
- In power system dynamic security assessment, based on the PEBS/BCU method, the dominant methods for detecting the exit point across PEBS are the ray and gradient methods. 在电力系统动态安全分析中,基于能量函数的PEBS/BCU方法应用时,识别穿越PEBS界面的出口点方法包括射线法和梯度法。
- China's ecological situation is grim with aquaculture pollution,soil erosion and desertification threatening the country's ecological security. 我国生态形势十分严峻,水产品的污染、水土流失和土地沙化威胁着国家生态安全。
- Main contents of this paper include: Dynamic Security Assessment(DSA),Wide Area Measurement System(WAMS) and Wide Area Control System(WACS),System restoration after a blackout. 评述广域测量系统及广域控制保护系统的构成、关键技术及应用领域,提出广域测量预警控制系统的概念。