摘要
在典型草型湖泊—内蒙古乌梁素海设立研究基地 ,进行较大规模沉水植物收割工程试验 ,试验表明 :以机械化方式收割沉水植物转移氮、磷营养盐 ,可以有效地减缓湖泊内源性营养物负荷的储备速度 ,使输入与输出的营养盐趋于平衡 ,并可显著抑制生物填平作用 ,是草型湖泊富营养化适度控制的一项关键性的实用技术 ;有计划、合理地收割沉水植物可以保证沉水植物净化水质的功能 ,不会造成藻类泛滥 ,也不会影响沉水植物的繁殖 ,收割沉水植物转移氮、磷营养盐的生物治理工程技术可以长期正常运行 ;在实施沉水植物收割工程对草型湖泊进行生态恢复的同时 ,即可收获大量高蛋白优质水草饲料 ,使湖泊治理与水生资源开发取得和谐统一 。
The experiment was conducted by setting up a research site in a typical vegetation rich lake, lake Wuliangsuhai in Inner Mongolia, and carrying out a fairly large scale harvesting project of the submerged vegetation. Experimental results showed that harvesting submerged vegetation and transferring the elemental nutrients N and P will slow the accumulation of internal nutrient loads of lakes and will make the input and output of the elemental nutrients gradually come into balance. This technique noticeably prevented Bioaccumulation and is a key technique in reducing eutrophication of vegetation rich lakes. The systematic harvesting of submerged vegetation guarantees the function of improving water quality by submerged vegetation and does not result in algae overflow or influence the reproduction of submerged vegetation. The technique of harvesting submerged vegetation and transferring the elemental nutrients of N and P can continue indefinitely. While harvest submerged vegetation, biological restoration can also be accomplished. At the same time, a good source of high-protein hydrophyte animal feed is realized. This technique allows for harmony between lake management and development of aquatic resources while also promoting sustainable development of the environment and the regional economy.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2003年第6期95-100,共6页
Transactions of the Chinese Society of Agricultural Engineering
基金
国家自然科学基金资助项目 (30 1 60 0 2 2 )
国家科技成果重点推广计划项目 (2 0 0 2EC0 0 0 1 2 8)
关键词
草型湖泊
鸟梁素海
富营养化
沉水植物
收割工程
vegetation rich lake
Lake Wuliangsuhai
eutrophication
submerged plant
harvesting project
