本文選題：膠州灣 + 互花米草　； 參考：《青島大學(xué)》2017年碩士論文

【摘要】：膠州灣濕地位于青島市,是山東半島面積最大的濱海濕地,也是青島的自然資源寶庫(kù)。濕地作為生態(tài)系統(tǒng)復(fù)雜多變,對(duì)生態(tài)及環(huán)境有重要影響。硫素作為繼氮、磷、鉀元素之后的第四位重要營(yíng)養(yǎng)元素,在植物生長(zhǎng)發(fā)育過(guò)程中具有重要的作用,同時(shí)對(duì)維持生態(tài)系統(tǒng)的健康發(fā)展也有著重要的意義。濕地硫的生物地球化學(xué)循環(huán)過(guò)程在濕地生態(tài)系統(tǒng)中起著重要作用,為了更好地了解硫素在濕地生態(tài)系統(tǒng)中的地位和作用,本研究將膠州灣互花米草濕地作為主要研究區(qū)域,通過(guò)野外采樣、室內(nèi)實(shí)驗(yàn),分別利用氯化鈣浸提-硫酸鋇比濁法、酸消解-硫酸鋇比濁法測(cè)定土壤有效硫含量及土壤總硫含量以便探究互花米草濕地土壤中硫素含量的時(shí)空分布特征;并利用常規(guī)的理化性質(zhì)測(cè)定方法來(lái)測(cè)定土壤硫素含量的相關(guān)影響因素;同時(shí)對(duì)比分析了草地和光灘土壤中硫素含量差異性以及兩者對(duì)應(yīng)的時(shí)空分布特征;揭示了外來(lái)種互花米草對(duì)膠州灣濕地土壤硫素的影響,以及土壤理化性質(zhì)與濕地土壤硫素含量的相關(guān)性,以期了解膠州灣互花米草濕地營(yíng)養(yǎng)元素特征提供基礎(chǔ)資料。本研究得到的主要結(jié)果如下:(1)2015年和2016年膠州灣互花米草濕地在土層0-60 cm中土壤總硫和土壤有效硫的垂直分布特征均是整體上呈現(xiàn)出自上而下其含量逐漸降低的分布特征。(2)分別對(duì)比2015年和2016年濕地互花米草區(qū)和光灘區(qū)中土壤總硫和土壤有效硫含量,發(fā)現(xiàn)互花米草區(qū)土壤總硫和土壤有效硫含量均高于光灘區(qū)土壤中其含量。(3)2015年和2016年9-11月互花米草濕地0-60 cm土層中土壤總硫的平均含量分別為1.49 g/kg、1.34 g/kg,土壤有效硫均值分別為651.56 mg/kg、696.54 mg/kg�？梢�(jiàn)2016年土壤總硫含量有所降低;而土壤有效硫含量有所上升。(4)2015年膠州灣互花米草濕地草區(qū)土壤總硫含量隨著四季變化表現(xiàn)為先降低后升高再降低,土壤有效硫含量表現(xiàn)為隨四季變化先升高再降低;而光灘區(qū)土壤總硫和土壤有效硫含量則均是隨著四季變化逐漸遞減。2016年膠州灣互花米草濕地草區(qū)土壤總硫含量隨月份變化,6月最低,9月最高;土壤有效硫含量也是在6月最低,9月、10月、11月含量差異不大。而光灘區(qū)土壤總硫含量則在6月最高,10月最低;土壤有效硫含量表現(xiàn)為隨月份變化逐漸降低,6月最高,11月最低。(5)互花米草各器官對(duì)同種元素具有不同的累積能力,其中總硫的含量有所不同。2015年互花米草各器官中總硫含量表現(xiàn)為:根葉莖。2016年互花米草各器官中總硫含量大致表現(xiàn)為:葉根莖。(6)影響膠州灣互花米草濕地土壤硫素含量變化的主要因子有:土壤有機(jī)質(zhì)、土壤pH、可溶性鹽含量。其中土壤有機(jī)質(zhì)、可溶性鹽含量與土壤硫素含量極顯著正相關(guān)(P0.01),土壤pH與其極顯著負(fù)相關(guān)(P0.01)。
[Abstract]:Jiaozhou Bay Wetland, located in Qingdao, is the largest coastal wetland in Shandong Peninsula and the treasure house of Qingdao's natural resources. As a complex and changeable ecosystem, wetland has an important impact on ecology and environment. Sulfur, as the fourth important nutrient element after nitrogen, phosphorus and potassium, plays an important role in plant growth and development, and also plays an important role in maintaining the healthy development of ecosystem. The biogeochemical cycling process of sulfur in wetland plays an important role in wetland ecosystem. In order to better understand the role of sulfur in wetland ecosystem, the Jiaozhou Bay Spartina alterniflora wetland is taken as the main research area in this study. Through field sampling and laboratory experiments, calcium chloride extraction and barium sulfate turbidimetric method were used respectively. Acid digestion-barium sulfate turbidimetric method was used to determine available sulfur content and total sulfur content in order to investigate the temporal and spatial distribution of sulfur content in Spartina alterniflora wetland. The related factors of sulfur content in soil were determined by conventional physical and chemical methods, and the difference of sulfur content in grassland and Guangtan soil and their spatio-temporal distribution characteristics were compared and analyzed. The effects of exotic species Spartina alterniflora on soil sulfur content in Jiaozhou Bay wetland and the correlation between soil physical and chemical properties and soil sulfur content were revealed in order to provide basic data for understanding nutrient element characteristics of Spartina alterniflora wetland in Jiaozhou Bay. The main results of this study are as follows: (1) the vertical distribution of soil total sulfur and soil available sulfur in Jiaozhou Bay Spartina alterniflora wetland in 2015 and 2016 in 0-60 cm soil layer is the overall top-down content gradually decreased. (2) comparison of soil total sulfur and soil available sulfur content in 2015 and 2016, respectively, It was found that the content of total sulfur and available sulfur in soil in Spartina alterniflora region was higher than that in light beach area. (3) the average content of soil total sulfur in 0-60 cm soil layer of Spartina alterniflora wetland in September and November 2016 was 1.49 g / kg ~ (-1) 路kg ~ (-1) respectively, and the mean value of available sulfur in soil was 651.56 mg / kg ~ (69) mg 路kg ~ (-1) 路kg ~ (-1). It can be seen that the total sulfur content of soil decreased in 2016, while the content of available sulfur in soil increased. (4) in 2015, the total sulfur content of soil in Jiaozhou Bay Spartina alterniflora Wetland showed that the content of soil total sulfur decreased first and then increased then decreased with the change of four seasons. The available sulfur content of soil increased first and then decreased with the change of four seasons. The content of total sulfur and available sulfur in soil decreased gradually with the change of four seasons. In 2016, the content of total sulfur in soil of Spartina alterniflora wetland in Jiaozhou Bay changed with the month, the lowest in June and the highest in September. The content of available sulfur in soil was also the lowest in June, and there was no significant difference in the content of available sulfur in September, October and November. The content of available sulfur in soil decreased gradually with the change of month, the highest in June and the lowest in November. (5) each organ of Spartina alterniflora had different accumulative ability to the same element. The content of total sulfur in each organ of Spartina alterniflora was different in 2015. The content of total sulfur in the organs of Spartina alterniflora in 2015 was root and leaf stem. In 2016, the content of total sulfur in each organ of Spartina alterniflora was approximately: rhizome of leaf. (6) influence of sulfur content in soil of Spartina alterniflora wetland in Jiaozhou Bay The main factors contributing to the change of nutrient content are: soil organic matter, Soil pH, soluble salt content. Soil organic matter, soluble salt content and soil sulfur content were significantly positive correlation (P0.01), soil pH and its extremely significant negative correlation (P0.01).
【學(xué)位授予單位】：青島大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：Q948.1

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