【摘 要】
：
运用系统论和生态要素阈值法,从小城镇人口承载力、碳氧平衡和水资源供应等生态要素方面,根据能量守恒与物质循环的原理,分析各个生态要素在系统平衡状态时的阈值,剖析小城镇
论文部分内容阅读
运用系统论和生态要素阈值法,从小城镇人口承载力、碳氧平衡和水资源供应等生态要素方面,根据能量守恒与物质循环的原理,分析各个生态要素在系统平衡状态时的阈值,剖析小城镇生态平衡制约因素;同时,利用园林规划理论与生态学理论,对小城镇园林绿化总量进行了分析与论证,将生态要素阈值作为园林绿地规划指标的约束条件,基于小城镇生态系统可持续发展的目标,构建小城镇园林绿化总量控制模型,寻求小城镇适宜的园林绿化总量.
其他文献
Tannery wastewater causes serious ecological and sanitary damage.Chemical analysis of water from Binlamdoune River of the medina of Fez was conducted and the re
To solve the fault diagnosis problem of liquid propellant rocket engine ground testing bed, a fault diagnosis approach based on self-organizing map (SOM) is pro
Background Endoscopic treatment for urethral stricture, including cold knife and laser, poses a major challenge to clinical practice. Both the benefits and draw
The relationship between cloud amount and sea surface temperature (SST) over Western Tropical Pacific cloudy regions during TOGA COARE is investigated based on
Angiotensinogen is a member of the serpin family. It is produced constitutively and released into the circulation mainly by the liver. Angiotensinogen forms ang
Tracing the sediment delivery from its source terrain to its ultimate sink envisage multiple factors that play a vital role in understanding present day erosion
Soil samples were collected from three plots under different land utilization patterns including degradation,farming,and restoration.The abundances of methanotr
The rolling bcaring friction torque which is characterized by its uncertainty and nonlinearity affects heavily the dynamic performance of a system such as missi