建设项目环境影响的时间分布

建设项目对生态与环境影响的时间分布是不均匀的。在建设项目建设和运行的不同时段受影响的环境因子不同,数量不等,强弱不均。环境影响时间分布的类型可大致分为:(1)离散不连续分布,包括一次性突发影响,周期性影响、随机影响;(2)连续分布,包括短期影响、长期均匀影响,长期累积影响;(3)永久性不可逆影响。

TIME DISTRIBUTION OF CONSTRUCTI PROJECT IMPACTS ON ENVIRONMENT

Time distribution of construction project impacts on ecoenvironment is uneven. The quantities and intensities of impacted factors, The quantities are different in different periods when a project's construction and operation. Time distribution types of environmental impacts can be divided as the follows: (1) dispersed and uncontinual type, it includes abrupt impact, periodic impact and random impact; (2) continual type, which includes short time continual impact, long time continual and even impact, long time and accumulating impact; (3) permanent and unrecoverable impact.