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- 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。
- Based on clarifying of land ecological security and taking Hebei Province as the case, this article discusses the methods of security evaluations of land ecology. 以河北省为例,在界定土地生态安全概念的基础上,探讨了土地生态安全评价的方法。
- Land ecological security at town level 城镇土地生态安全
- （2）Land ecological security pattern of different ecological friable areas; （2）不同类型生态脆弱地区的土地生态安全格局；
- Effects of Road Networks on Land Ecological Security: A Case Study in a Transitional Area of the Loess Plateau 道路网络对黄土高原过渡区土地生态安全的影响
- land ecological security 土地生态安全
- Study on the Evaluation of tie Land Ecologic Security in Chongqing City 重庆市土地生态环境安全评价研究
- 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。
- 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。
- This topic investigated the Hui'an County land ecological environment present situation, has appraised the land utilization type to the ecological environment influence. 本课题调查了惠安县土地生态环境的现状，评价了土地利用类型对生态环境的影响。
- 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。
- 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。
- In accordance with the commonly accepted index of security evaluation on regional land ecology, a system of 22 indexes suitable for this region is established. 依据区域土地生态安全评价一般性指标体系,建立了适合该区的由22项指标组成的土地生态安全评价指标体系。
- 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。
- The concept of land ecological safety is the land ecosystem of mankind ensure degree unaffected by ecological destroy and environment pollution in the production, living and health. 土地生态安全是指土地生态系统对人类在生产、生活和健康等方面不受生态破坏与环境污染等影响的保障程度。
- Riparian zones are the important transitional regions for exchange of substance, energy, and information between river ecological system and land ecological system, and have obvious marginal effect. 河岸带是河流生态系统与陆地生态系统进行物质、能量、信息交换的一个重要过渡带,具有明显的边缘效应。
- 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。
