近日，中科院武汉植物园湿地生态学科组博士研究生鲁静等人在国际权威工程和环境杂志Ecological Engineering发表论文"Using sediment seed banks and historical vegetation change data to develop restoration criteria for a eutrophic lake in China"，提出了滇池沉水植被分区分步生态修复的路线图。
滇池是一个典型的大型富营养化高原浅水湖泊，沉水植被衰退消亡严重。在外源截污减排、入湖河流整治、水华污染削减等综合治理措施实施的基础上，开展适合高原重污染湖泊的生态修复途径与关键技术研究，可以为湖泊生态修复工程提供指导和依据。
该研究是湿地生态学科组在富营养化湖泊水生植被退化、维持机理和恢复策略长期研究中的一部分工作。鲁静在刘贵华研究员指导下，通过对滇池沉水植被与种子库的系统调查，以及对滇池过去50年来沉水植物与水环境演变趋势的综合分析，归纳了滇池沉水植被消亡的时间和空间顺序，提出了滇池沉水植被分区分步生态修复的路线图。
该研究得到了国家自然科学基金（30970469）和国家重大水专项（2008ZX07102-005）的资助。（生物谷bioon.com）
doi:10.1016/j.ecoleng.2011.11.006
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Using sediment seed banks and historical vegetation change data to develop restoration criteria for a eutrophic lake in China
Jing Lua, c , Haibin Wanga, c , Min Panb , Jing Xiaa , Wei Xinga , Guihua Liua, ,
Restoration of submerged macrophytes to lake that have lost them can be difficult but can be helped by studies on historical vegetation data and remnant seed banks in the sediments. We analysed sediment seed banks and historical vegetation change data in Lake Dianchi, China, and aimed to develop a possible recovery trajectory of submerged vegetation. The results indicate that phosphorus concentrations have increased by 28 times in the lake since 1961 and macrophytes that used to grow at 5–6.5 m are now confined to water less than 3 m deep. Many species had disappeared by 1978 and a former 17 species and 88% cover in 1961 was reduced to 9 species in three turbidity-tolerant communities with only 2% cover by 2010. The remaining seed bank was dominated by two species, still present in the lake and many former species, which had been very abundant, were not found as seeds. We suggest that macrophytes can be restored to areas shallower than 3 m by using three turbidity-tolerant species, and that other formerly present species will need to be reintroduced when conditions have been further improved.
