不同类型生产建设项目水土流失防治标准等级确定

Classification of Control Standards for Soil and Water Loss Resulted by Different Production and Construction Projects

[目的]研究提出生产建设项目水土流失防治标准等级确定的新思路、新方法,为修订现行国家标准,实施科学管理提供参考。[方法]通过判别项目水土流失影响程度和项目水土保持敏感性来确定水土流失防治标准等级。[结果]提出了综合考虑项目所处水土保持一级区划情况,水土流失重点防治区情况,区域水土保持生态功能重要性,项目水土流失影响程度,项目所在地水土保持敏感度等多种因素来确定水土流失防治标准等级。水土流失影响程度与水土保持敏感度越高的项目,其防治标准应越高,反之应降低。[结论]执行一、二、三级防治标准的生产建设项目数量呈现较为理想的"金字塔"形分布,能够充分体现不同类型项目间的明显区别,也便于操作,方便判定。

[Objective]This study aimed to put forward some new ideas and methods for identifying the grade of control standards for soil and water loss resulted by poroduction and construction projects,which can be used to revise the current national standards,in order to provide references for the implementation of scientific management.[Methods]This research identified the grade of control standards by evaluating the influence of soil erosion and the soil and water conservation sensibility of projects.[Results]It suggested that various soil and water conservation factors in those projects should be considered to determine the grade of control standard,such as regionalization,key areas,ecological functional importance,influence degree and the regional sensibility.The higher control standard grades are for the higher influence and sensibility.[Conlusion]The numbers of projects which perform different standard grade show an ideal＂pyramid＂shape distribution pattern.It can fully reflect the differences in variety projects,and is easy to be handled and judged.