山东农业科学2016，Vol.48Issue(12)：111-116,6.DOI:10.14083/j.issn.1001-4942.2016.12.025
残膜污染防治与可降解地膜生态环境影响评价
Control of Residual Film Pollution and Ecological Environment Impact Assessment of Degradable Mulch Film
摘要
Abstract
As an important agricultural production materials,plastic film has a huge use in China.The usage amount of mulch film in 2014 reached to 1.44 million tons,which increased by three times than that in 1992 with the annual growth rate of about 6%.The sum covered area of three provinces of Xinjiang,Shandong and Gansu occupied 38% of the total covered area in China.The traditional transparent plastic film is not easy to degrade after using because of its stable properties.The residual film quantity in farmland in some area is much higher than the limit value of 75.0 kg/hm2 in China.The residual film pollution shows the characteris-tics of obvious accumulative effect,large difference in different pollution areas and annual increasing pollution intensity.Degradable mulch film is an effective way to prevent the residual film pollution.Considering the mi-gration,transformation and fate processes of degradable plastic film,the ecological environment impact assess-ment model was established with rate of residual film,seedling non -emergence rate,earthworm mortality and heavy metal pollution level as indices.The model assessed and divided the ecological environment impact of degradable plastic film into four levels of no impact,small impact,medium impact and large impact.This study provided a research method for evaluating the ecological environment impact of degradable mulch film.关键词
残膜污染/可降解地膜/生态环境/影响评价Key words
Residual film pollution/Degradable film/Ecological environment impact/Assessment分类
资源环境引用本文复制引用
李倩,安洁,石宝翠,周经纶,王丽红,明照岳..残膜污染防治与可降解地膜生态环境影响评价[J].山东农业科学,2016,48(12):111-116,6.基金项目
山东省重点研发计划项目（2015GNC111008）；公益性行业（农业）科研专项（201503105）；山东省自主创新及成果转化专项（2014ZZCX01105）；济南市2015年科学技术发展计划第二批项目（201502030）；山东省科技惠民计划项目 （）
