本文選題：七星湖濕地 + 水生植物��； 參考：《華北電力大學(xué)(北京)》2017年碩士論文

【摘要】：探索磷在恢復(fù)濕地中的遷移轉(zhuǎn)化及內(nèi)源磷的釋放風(fēng)險(xiǎn)對(duì)研究濕地系統(tǒng)磷去除機(jī)理具有重要意義。本文以山東滕州市七星湖濕地為研究區(qū)域,采集了濕地表層水體、大型水生植物、沉積物及其上覆水體樣品,分析了磷的沿程分布規(guī)律,研究了環(huán)境因素對(duì)磷空間分布格局的影響。在此基礎(chǔ)上,探討了磷的垂向遷移轉(zhuǎn)化機(jī)制,計(jì)算了沉積物-上覆水體擴(kuò)散通量,并分析了底泥沉積物磷的釋放風(fēng)險(xiǎn)。研究結(jié)果表明,(1)在濕地中,各形態(tài)磷的污染負(fù)荷存在沿程下降的趨勢(shì)。1)表層水體溶解性活性反應(yīng)磷(SRP)濃度沿程降低,磷污染負(fù)荷在明水區(qū)域削減80%,在蘆葦群落削減94%,在香蒲群落削減91%,水生植被有顯著的SRP去除效果;在中游區(qū)段,表層水體的磷形態(tài)主要是顆粒磷(PP),植物群落PP百分比低于明水區(qū)域。對(duì)表層水體各形態(tài)磷影響最大的理化性質(zhì)是酸堿度(pH)和溶解氧(DO)。2)上覆水體SRP濃度沿程降低,磷污染負(fù)荷在蘆葦群落削減91%,在香蒲群落削減94%,削減幅度高于明水區(qū)域(81%);PP百分比在入口處較低,隨后在中游區(qū)段增大。對(duì)上覆水體各形態(tài)磷影響最大的理化性質(zhì)是pH。3)在沿程多數(shù)斷面,間隙水各形態(tài)磷濃度在明水區(qū)域中比植物群落中高,間隙水主要以SRP為主,占總磷(TP)的46%~91%。對(duì)間隙水各形態(tài)磷影響最大的理化性質(zhì)是pH和電導(dǎo)率(C)。4)在濕地入口處,明水區(qū)域的沉積物TP含量較高,達(dá)到1234.7 mg/kg,高于同一斷面的蘆葦群落和香蒲群落。在濕地出水口,明水區(qū)域沉積物TP含量降低,而植物群落沉積物TP含量仍處于較高水平。有機(jī)質(zhì)含量與沉積物TP含量有顯著正相關(guān)關(guān)系。堿性磷酸酶活性與有機(jī)磷含量有顯著負(fù)相關(guān)關(guān)系。5)蘆葦在L1斷面株高較高,但磷吸收量卻不高。而在X3斷面香蒲莖粗最小(20.18 cm),體內(nèi)磷含量卻高達(dá)2.74g/kg。(2)明水區(qū)域和植物群落存在不同的垂向遷移轉(zhuǎn)化機(jī)制。1)明水區(qū)域、蘆葦群落和香蒲群落垂向斷面中,TP、TDP、SRP主要分布在上覆水體和間隙水中。TP、TDP、SRP在植物群落進(jìn)水口處主要存在于上覆水體中,間隙水所占比例較低。2)濕地磷主要富集在沉積物中,在水體-植物-沉積物中所占比例為95%以上,其次是植物,最低是水體。3)明水區(qū)域間隙水各形態(tài)磷與沉積物NaOH-P具有顯著相關(guān)關(guān)系;蘆葦群落表層水體和上覆水體、間隙水和沉積物有機(jī)磷有顯著相關(guān)關(guān)系;香蒲群落表層水體和上覆水體、上覆水體和間隙水有顯著相關(guān)性。4)濕地磷素由沉積物向上覆水體擴(kuò)散。濕地表層沉積物吸附指數(shù)(PSI)在濕地中整體表現(xiàn)出前段低后段高的分布特征,說明濕地前段沉積物磷最大吸附量相對(duì)較小。植物群落表層沉積物吸附飽和度(DPS)高于明水區(qū)域,PSI低于明水區(qū)域,表明植物群落表層沉積物磷更容易進(jìn)入上覆水體。利用磷釋放風(fēng)險(xiǎn)指數(shù)(ERI)對(duì)濕地表層沉積物中的磷的潛在釋放風(fēng)險(xiǎn)進(jìn)行評(píng)估,結(jié)果表明濕地表層沉積物中磷釋放風(fēng)險(xiǎn)處于高度風(fēng)險(xiǎn)范圍,其中香蒲群落磷釋放風(fēng)險(xiǎn)最高。在恢復(fù)濕地中,磷素由沉積物向上覆水體擴(kuò)散,具有高度的磷釋放風(fēng)險(xiǎn);植物群落中水體各形態(tài)磷濃度和沉積物富集磷素均比明水區(qū)域低,植物可以降低區(qū)域磷污染負(fù)荷。本研究進(jìn)一步正確認(rèn)識(shí)和評(píng)估濕地水質(zhì)凈化功能,為科學(xué)規(guī)劃恢復(fù)濕地污水處理生態(tài)工程提供依據(jù)。
[Abstract]:Exploring the migration and transformation of phosphorus in the restoration wetland and the risk of releasing endogenous phosphorus is of great significance to the study of the mechanism of phosphorus removal in the wetland system. This paper took the Seven Star Lake Wetland in Tengzhou, Shandong as the research area, and collected the surface water body of the wetland, the large aquatic plants, the sediments and the overlying water samples, and analyzed the distribution regularity of the phosphorus in the process. The influence of environmental factors on the spatial distribution pattern of phosphorus was investigated. On this basis, the vertical migration and transformation mechanism of phosphorus was discussed, the diffusion flux of sediment and overlying water was calculated, and the release risk of phosphorus in sediment sediment was analyzed. The results showed that (1) in wetland, the pollution load of various forms of phosphorus existed along the downward trend of.1) surface water. The concentration of phosphorus (SRP) decreased by 80%. The phosphorus pollution load was reduced by 80% in the clear water area, 94% in the reed community, 91% in the cattail community and the SRP removal effect in the aquatic vegetation. In the middle reaches, the phosphorus form in the surface water body was mainly particulate phosphorus (PP), and the percentage of PP in the plant community was lower than that in the clear water area. The maximum physical and chemical properties of various forms of phosphorus are the decrease of SRP concentration along the acidity and alkalinity (pH) and dissolved oxygen (DO).2. The phosphorus pollution load is reduced by 91% in the reed community and 94% in the cattail community, and the reduction is higher than that in the clear water region (81%); the percentage of PP is lower at the entrance and then in the middle reaches. The most important physical and chemical properties are pH.3). In most sections along the path, the concentration of phosphorus in the interstitial water is higher than that of the plant community in the clear water area, and the interstitial water is mainly SRP, and the most important physical and chemical properties of the total phosphorus (TP) 46%~91%. are pH and conductivity (C).4 at the entrance of the wetland, and the sediment of the clear water region is TP containing. The amount of TP was higher than that of the reed community and cattail community in the same section. The content of sediment in the sediments of the plant community was still at a high level, while the content of the sediment in the plant community was still at a high level. The content of organic matter was significantly positively correlated with the content of TP in the sediments. The activity of alkaline phosphatase and the content of organophosphorus were significantly negative in the water outlet of the wetland. The content of the sediment was significantly negative. The content of the organic matter and the content of the sediment were significantly negative. The content of the organic matter and the content of the sediments were significantly positive. The activity of alkaline phosphatase and the content of organic phosphorus were significantly negative. Correlation.5) Reed was high in L1 cross-section height, but phosphorus absorption was not high, but at X3 section, the stem of cattail was the smallest (20.18 cm), and phosphorus content in the body was as high as 2.74g/kg. (2) clear water area and plant community with different vertical migration and transformation mechanism.1), the vertical section of reed community and cattail community, TP, TDP, SRP were mainly distributed in the vertical section. The.TP, TDP, SRP in the overlying water and interstitial water are mainly in the overlying water of the plant community, the proportion of interstitial water is lower.2), the phosphorus is mainly concentrated in the sediments, the proportion of the water in the water body and the sediment is more than 95%, the next is the plant, the lowest is the water body.3) and the interstitial water in the clear water area of the sediments is NaO and the sediment NaO H-P has a significant correlation; the surface water and overlying water body of the reed community have significant correlation with the organic phosphorus in the sediment; the surface water and overlying water of the cattail community, the overlying water and the interstitial water have a significant correlation of.4). The phosphorus in the wetland is diffused from the sediments to the overlying water. The surface sediment adsorption index (PSI) of the wetland surface is in the wetland. The distribution of low posterior segment height in the front segment shows that the maximum phosphorus adsorption of the sediments in the front of the wetland is relatively small. The adsorption saturation (DPS) of the surface sediments in the plant community is higher than that in the clear water area, and the PSI is lower than that in the clear water area, indicating that the phosphorus in the surface sediments of the plant community is easier to enter the overlying water. The phosphorus release risk index (ERI) is used. The potential release risk of phosphorus in the surface sediments of the wetland was evaluated. The results showed that the risk of phosphorus release in the surface sediments of the wetland was at a high risk, and the phosphorus release risk was the highest in the cattail community. In the restoration wetland, the phosphorus was spread from the sediments to the overlying water body and had a high risk of phosphorus release. The concentration of phosphorus and the accumulation of phosphorus in the sediments are lower than those in the clear water area. The plant can reduce the phosphorus pollution load in the region. This study further understands and evaluated the purification function of the water quality of the wetland, which provides the scientific basis for the scientific planning of the restoration of the ecological engineering of the wetland sewage treatment.

【學(xué)位授予單位】：華北電力大學(xué)(北京)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：X52

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 于淑玲;李曉宇;張繼濤;陳國(guó)雙;李秀軍;;小興凱湖表層底泥磷吸附容量及潛在釋放風(fēng)險(xiǎn)[J];中國(guó)環(huán)境科學(xué);2014年08期

2 向交;徐麗萍;李和平;李娟;唐鏡淞;;氧化還原電位的研究及應(yīng)用[J];地球與環(huán)境;2014年03期

3 潘延安;雷沛;張洪;單保慶;李杰;;重慶園博園龍景湖新建初期內(nèi)源氮磷分布特征及擴(kuò)散通量估算[J];環(huán)境科學(xué);2014年05期

4 蘇艷秋;羅國(guó)強(qiáng);顧繼銳;陶勇;;光合細(xì)菌對(duì)水產(chǎn)養(yǎng)殖環(huán)境細(xì)菌群落結(jié)構(gòu)的影響[J];淡水漁業(yè);2013年05期

5 楊楠;于會(huì)彬;宋永會(huì);郅二銓;袁林江;彭劍峰;;白塔堡河上覆水與沉積物間隙水N、P分布特征[J];環(huán)境科學(xué)研究;2013年07期

6 張慶輝;趙捷;朱晉;程莉;海全勝;同麗嘎;;中國(guó)城市濕地公園研究現(xiàn)狀[J];濕地科學(xué);2013年01期

7 曹琪;李敏;楊航;劉晶晶;;野鴨湖濕地挺水植物磷素截留量動(dòng)態(tài)變化分析[J];環(huán)境科學(xué)學(xué)報(bào);2012年08期

8 鄧春蕾;蔣曉輝;蔡大應(yīng);黃葵;;人工濕地床體中水質(zhì)指標(biāo)遷移轉(zhuǎn)化規(guī)律研究[J];安徽農(nóng)業(yè)科學(xué);2012年04期

9 吳鋒;戰(zhàn)金艷;鄧祥征;林英志;;中國(guó)湖泊富營(yíng)養(yǎng)化影響因素研究——基于中國(guó)22個(gè)湖泊實(shí)證分析[J];生態(tài)環(huán)境學(xué)報(bào);2012年01期

10 王泉;吳獻(xiàn)花;吳珊;李利瑞;余祥潤(rùn);;垂直潛流人工濕地中ORP、DO和pH與脫氮過程的關(guān)系[J];玉溪師范學(xué)院學(xué)報(bào);2011年12期

相關(guān)博士學(xué)位論文 前8條

1 謝凱;淮南潘謝采煤沉陷積水區(qū)沉積物磷遷移轉(zhuǎn)化過程與機(jī)制研究[D];中國(guó)礦業(yè)大學(xué);2014年

2 邵學(xué)新;潮灘濕地植物對(duì)磷素遷移轉(zhuǎn)化及截留的影響機(jī)制研究[D];浙江大學(xué);2014年

3 胡正峰;加拿大格蘭德河水體磷素形態(tài)轉(zhuǎn)化及水生生物對(duì)磷素吸收釋放研究[D];西南大學(xué);2013年

4 王立志;沉水植物對(duì)湖泊沉積物—上覆水中磷遷移轉(zhuǎn)化的影響[D];南京師范大學(xué);2011年

5 烏云;烏梁素海上覆水體與表層沉積物污染特征及其污染物遷移轉(zhuǎn)換規(guī)律研究[D];內(nèi)蒙古農(nóng)業(yè)大學(xué);2011年

6 韓璐;河流沉積物磷形態(tài)分布特征及其釋放模擬研究[D];南開大學(xué);2010年

7 黃德鋒;人工濕地凈化富營(yíng)養(yǎng)化景觀水的效果及機(jī)理研究[D];同濟(jì)大學(xué);2007年

8 黃清輝;淺水湖泊內(nèi)源磷釋放及其生物有效性[D];中國(guó)科學(xué)院研究生院（生態(tài)環(huán)境研究中心）;2005年

相關(guān)碩士學(xué)位論文 前5條

1 傅玲;水生植物群落對(duì)水體中氮磷凈化效果研究[D];南京師范大學(xué);2014年

2 崔松波;濕地表層底泥磷的分布及影響因素研究[D];華北電力大學(xué);2014年

3 徐景琪;太湖沉積物磷形態(tài)的空間分布研究[D];南京理工大學(xué);2010年

4 李君;杭州市運(yùn)河水系氮磷污染及底泥磷釋放水動(dòng)力學(xué)研究[D];浙江大學(xué);2006年

5 鄭超海;湖泊水體營(yíng)養(yǎng)物含量對(duì)沉積物再懸浮及沉降過程的響應(yīng)[D];河海大學(xué);2005年

，

本文編號(hào)：1876368