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- Land ecological degradation 土地生态退化
- At present, regional poverty and ecological degradation form a vicious circle. 目前,区域贫困和生态环境退化已形成了恶性循环。
- At present,regional poverty and ecological degradation form a vicious circle. 目前,区域贫困和生态环境退化已形成了恶性循环。
- The artificial factor in the middle area of Brahmaputra, Lhasa River and Nianchu River induced relatively strong ecological degradation action. 在雅鲁藏布江、拉萨河与年楚河流域中部地区人为因子致使生态退化作用较强.
- By taking Pengyang County, Ningxia Hui Autonomous Region, as an example, reasons for ecological degradation are analyzed. 摘要分析了彭阳县生态环境退化的原因。
- 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。
- 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。
- Mobile anhydrous ecological toilet break the traditional concept of waste treatment, It uses special domesticated efficient microbial compound of faeces for ecological degradation without water. 无水生态移动厕所突破了传统的粪尿处理概念,它利用特殊驯化的高效复合微生物对粪便进行生态化降解处理,无需水冲。
- The emergence of various ecological degradations is the best talking example. 北京与周边出现种种的生态退化问题,是最明显的例证。
- 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。
- Pollution ecological degradation 污染生态退化
- cause for ecological degradation 生态退化成因
- 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。
- Tight he emergencex of various ecological degradations is the best talking example. 北京与周边出现种种的生态退化问题,是最明显的例证。
- However,a series of land ecologically maladjusted problems have emerged because of the massive lop and unreasonable utilization of land in recent decades. 在分析该区脆弱山地生态基础上,探讨了土地环境的现状和演变。
- 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。
- land ecological and economic systems 土地生态经济系统
- Ecological Degradation in Karst Regions of Chongqing 重庆岩溶地区生态退化的研究
- land ecological environmental improvement 土地生态环境整治