本文選題：洪泛鄱陽湖 + 水體分層或混合　； 參考：《長(zhǎng)江流域資源與環(huán)境》2017年06期

【摘要】：湖泊水體混合或分層對(duì)環(huán)境和生態(tài)具有顯著指示意義,能夠提高對(duì)未來湖泊水環(huán)境狀況的評(píng)價(jià)與管理。針對(duì)洪泛鄱陽湖水位季節(jié)性變化顯著等特點(diǎn),基于剖面溫度和穩(wěn)定氫氧同位素的調(diào)查分析來探明多因素影響下鄱陽湖水體垂向分層或混合狀況。結(jié)果發(fā)現(xiàn):鄱陽湖枯水期和洪水期水體垂向溫差大多處于0~1.0℃,大部分水域溫差小于0.5℃,但偶見洪水期部分水域會(huì)達(dá)到1.5℃的較大溫差。總體表明,在季節(jié)變化尺度上,鄱陽湖具有較為穩(wěn)定的等溫層,沒有明顯溫度分層特征。同位素分析結(jié)果得出,枯水期和洪水期的氫氧穩(wěn)定同位素值在深度剖面上呈均一分布,表明鄱陽湖水體混合狀況較好或完全混合。雖然湖區(qū)氣象條件和水文條件均是影響鄱陽湖水體分層或混合的重要因素,但鄱陽湖入流和出流等水文條件是影響鄱陽湖水體垂向混合的主要因素。鄱陽湖水體混合同時(shí)對(duì)湖泊水環(huán)境因子的垂向分布特征可能產(chǎn)生重要的影響或控制作用。首次基于大量野外監(jiān)測(cè)有針對(duì)性地開展鄱陽湖水體分層研究,結(jié)果有助于對(duì)湖泊水流結(jié)構(gòu)的深入認(rèn)識(shí),可為湖區(qū)水體污染物的輸移模擬與作用機(jī)制闡釋等方面提供科學(xué)參考。
[Abstract]:The mixing or stratification of lake water bodies has significant indicative significance to the environment and ecology, and can improve the evaluation and management of the future lake water environment. In view of the remarkable seasonal variation of water level in Poyang Lake, the vertical stratification or mixing of Poyang Lake water body under the influence of multiple factors was investigated based on the investigation and analysis of temperature profile and stable hydrogen and oxygen isotopes. The results show that the vertical temperature difference of Poyang Lake during dry and flood periods is mostly at 0 ~ 1.0 鈩，

本文編號(hào)：1790302