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- Keywords Huaihe River;Bengbu City;water ecological security;factor analysis;temporal evolution; 淮河;蚌埠;水生态安全;因子分析;时间演变;
- water ecological security 水生态安全
- Firstly, it is an ecological planning approach: natural topography, vegetation, and water systems are well protected to form an ecological security pattern. 第一,一个生态规划模式:保护和充分利用原有自然地形和水系,形成景观生态安全格局。
- Systematic analysis on water ecological adaptability of upland crops in Ioess hilly zone. 黄土丘陵区旱地作物水分生态适应性系统评价。
- 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。
- Adjust the water ecological environment, improve dissolving oxygen amount, extend changing water time. 调整水体生态环境,提高溶氧量,延长换水时间。
- Hyacinth is one of hydrophytes that studied earliest and most completely in water ecological restoration. 水葫芦是水生态修复中研究最早和最深入的水生植物之一。
- 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。
- 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。
- Frequent floods disaster, inadequate water resources and deteriorative water ecological environment are great threat to China. 我国不仅洪涝灾害频繁,而且水资源短缺和水环境、水生态恶化问题突出。
- 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。
- 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。
- The mesophyte is main water ecological types, the proportions is 72.0%, and the proportions of xerophyte is 23.00%.Hygrophyte and hydrophyte existing due to the diverse habitat. 中生植物为主,占72.;09%25,旱生植物其次,占23
- This raises a new requirement for supervising and developing forest resources of state-owned forest areas and protecting China"s ecological security. 对国有林区森林资源实施监督,是保证国有林区森林资源所有者权益的必要措施和手段。
- 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。
- The results showed that the comprehensive index of ecological security of Zigui County was 0.48, indicating a insecure state. 结果表明:秭归县生态安全综合值为0.;48,处于不安全状态。
- By the analysis of the tendency of regional ecological security from 1990 in Yulin, we can find that ecological security of Yulin presents a power function development. 通过对榆林市1990年以来生态安全变化趋势分析可知:榆林市的生态安全状况呈现出幂函数发展态势。
- 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。
- The clear water mirrored the blue sky. 清澈的水中映出蔚蓝的天空。