本文選題：搖蚊組合 + 底棲生境　； 參考：《湖泊科學(xué)》2017年03期

【摘要】：基于新疆巴音布魯克高寒濕地中一碟形洼地沉積巖芯210Pb測(cè)年、搖蚊、沉積理化指標(biāo)分析結(jié)果,利用冗余分析,結(jié)合氣象資料,探討了近60 a來(lái)氣候變化對(duì)搖蚊演替的影響.搖蚊亞化石組合表明,從1990s開(kāi)始搖蚊優(yōu)勢(shì)種從適應(yīng)性較強(qiáng)的Chironomus plumosus-type向與水生植物關(guān)系密切的Dicrotendips nervosus-type、Paratanytarsus penicillatus-type轉(zhuǎn)變.冗余分析結(jié)果表明總有機(jī)碳含量和粒度是影響搖蚊組合演替的主要環(huán)境因子,兩者共同解釋了搖蚊組合變化的31%.氣候變化通過(guò)改變濕地水量平衡影響水生植被、土壤侵蝕和水體擾動(dòng),進(jìn)而影響搖蚊種群演替.
[Abstract]:Based on the results of 210Pb dating, Chironomus and sedimentary physical and chemical indexes, the effects of climatic change on the succession of Chironomus in the 210Pb dating of a disc depressions in the Xinjiang ba - blue high cold wetland, the analysis results of Chironomus and depositional physicochemical indexes were discussed. The combination of Chironomus subfossils showed that the dominant species of Chironomus from 1990s started from the stronger adaptive Chironom Us plumosus-type shifted to Dicrotendips nervosus-type and Paratanytarsus penicillatus-type, which was closely related to aquatic plants. The results of redundancy analysis showed that the total organic carbon content and grain size were the main environmental factors affecting the succession of Chironomus. The both explained the 31%. climate change of the chironomid assemblage by changing the water quantity of the wetland. The balance affects the aquatic vegetation, soil erosion and water disturbance, and then affects the succession of chironomid population.

【作者單位】： 中國(guó)科學(xué)院南京地理與湖泊研究所湖泊與環(huán)境國(guó)家重點(diǎn)實(shí)驗(yàn)室;中國(guó)科學(xué)院大學(xué);
【基金】：環(huán)境保護(hù)部環(huán)保公益性項(xiàng)目(201309041)資助
【分類號(hào)】：P532;Q915

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