近日，中科院武漢植物園濕地生態(tài)學科組博士研究生魯靜等人在國際權(quán)威工程和環(huán)境雜志Ecological Engineering發(fā)表論文"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區(qū)分步生態(tài)修復(fù)的路線圖,。
滇池是一個典型的大型富營養(yǎng)化高原淺水湖泊，沉水植被衰退消亡嚴重,。在外源截污減排,、入湖河流整治、水華污染削減等綜合治理措施實施的基礎(chǔ)上,，開展適合高原重污染湖泊的生態(tài)修復(fù)途徑與關(guān)鍵技術(shù)研究,，可以為湖泊生態(tài)修復(fù)工程提供指導(dǎo)和依據(jù)。
該研究是濕地生態(tài)學科組在富營養(yǎng)化湖泊水生植被退化,、維持機理和恢復(fù)策略長期研究中的一部分工作,。魯靜在劉貴華研究員指導(dǎo)下，通過對滇池沉水植被與種子庫的系統(tǒng)調(diào)查,，以及對滇池過去50年來沉水植物與水環(huán)境演變趨勢的綜合分析,，歸納了滇池沉水植被消亡的時間和空間順序，提出了滇池沉水植被分區(qū)分步生態(tài)修復(fù)的路線圖,。
該研究得到了國家自然科學基金（30970469）和國家重大水專項（2008ZX07102-005）的資助,。（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.
