摘要
从国内外水体治理的理论与实践2个方面,阐述了近年来富营养化水体治理的方法与效果。结果表明,水生植物生态修复的理论和方法已随着大水面围栏控养技术、机械化高效打捞和资源化利用技术的大规模实践而日臻成熟,漂浮植物水葫芦(Eichhornia crassipes)泛滥与不能及时打捞而引起水质二次污染的风险已得到有效规避。通过在滇池控制性种养凤眼莲,滇池水体总氮和总磷质量浓度从入湖口的13.47和1.34 mg·L-1降低到出湖口的2.93和0.10 mg·L-1。上述结果表明只要经过周密的规划和采用合适的生物技术,如凤眼莲控制性种养水体生态修复技术,湖泊富营养化可得到有效抑制。
From the aspect of theories and practice of remediation of eutrophicated waters the world over, the methods used in recent years for remedying eutrophieated waters and their effects have been elucidated. The theories and methodolo- gy for haptophyte remediation of eutrophicated water is getting gradually mature with on-scale practicing of the technologies of open water confined rearing, efficient mechanical harvesting and complete biomass utilization. The risk of wild spreading of floating plant Eichhornia crassipes and failure of timely removing the plant expansion causing secondary pollution of the waters is efficiently evaded. Through controlled cultivation of E. crassipes, TN and TP in the water of the Dianehi Lake was significantly reduced from 13.47 and 1.34 mg· L-l in the inflow to 2. 93 and 0. 10 mg · L-1 in the outflow of the lake, re- spectively. All the findings indicate that lake eutrophication can be effectively controlled as long as careful planning and proper bio-technology, like controlled cultivation of, E. crassipes, is adopted.
出处
《生态与农村环境学报》
CAS
CSCD
北大核心
2014年第1期129-135,共7页
Journal of Ecology and Rural Environment
基金
国家重点基础研究发展计划前期研究专项(2012CB42650 3)
国家水体污染控制与治理科技重大专项(2012ZX07102-004-6)
国家自然科学基金青年科学基金(31100373)
云南省发展项目(9011107)
关键词
富营养化
生物治理
水葫芦
滇池
eutrophication
bioremediation
Eichhornia crassipes
Dianchi
