本文選題：無(wú)機(jī)硫形態(tài)　切入點(diǎn)：短葉茳芏濕地　出處：《環(huán)境科學(xué)學(xué)報(bào)》2017年12期

【摘要】：選擇閩江口鱔魚(yú)灘不同淹水環(huán)境下兩條樣帶(A樣帶,遠(yuǎn)離主潮溝且退潮后無(wú)積水;B樣帶,靠近主潮溝且退潮后有積水)上的短葉茳芏濕地和已被互花米草入侵(入侵前為短葉茳芏濕地)的互花米草濕地為研究對(duì)象,探討不同類型濕地土壤無(wú)機(jī)硫賦存形態(tài)的分布特征及其主控因素.結(jié)果表明,B樣帶上互花米草濕地和短葉茳芏濕地土壤中的水溶性硫(H_2O-S)和吸附性硫(Adsorbed-S)含量總體上低于A樣帶,而鹽酸可溶性硫(HCl-Soluble-S)和鹽酸揮發(fā)性硫(HCl-Volatile-S)含量則高于A樣帶.短葉茳芏濕地和互米草濕地土壤中不同形態(tài)無(wú)機(jī)硫的含量在兩條樣帶上整體均表現(xiàn)為HCl-Soluble-SH_2O-SAdsorbed-SHCl-Volatile-S,且二者的總無(wú)機(jī)硫含量分別占其TS含量的9.02%~15.50%和8.04%~12.73%.與短葉茳芏濕地相比,互花米草入侵分別使A樣帶土壤中H_2O-S、Adsorbed-S、HCl-Soluble-S、HCl-Volatile-S和總無(wú)機(jī)硫含量減少了35.2%、36.4%、16.8%、1.8%和26.12%;但使B樣帶表層土壤的總無(wú)機(jī)硫含量及0~20 cm土層的HCl-Soluble-S和HCl-Volatile-S含量分別增加了8.34%、15.34%和5.71%.研究發(fā)現(xiàn),非長(zhǎng)期淹水條件下,互花米草入侵后可降低濕地土壤有效硫的供給能力;長(zhǎng)期淹水條件下,互花米草入侵可通過(guò)提高土壤中HCl-Soluble-S的含量增加金屬硫化物沉淀,而揮發(fā)性硫含量的同步增加則可能對(duì)植被生長(zhǎng)(特別是根系發(fā)育)產(chǎn)生不利影響.
[Abstract]:Two transect A patterns were selected under different flooded environments in the eel beach in the mouth of Minjiang River, which were far away from the main tide trench and had no stagnant B pattern after the ebb tide.The short leaf marshland near the main tide trench and stagnant water after ebb tide, and the Spartina alterniflora wetland that had been invaded by Spartina alterniflora (before invasion) were studied.The distribution characteristics and main controlling factors of inorganic sulfur forms in different types of wetland soils were studied.The results showed that the contents of water soluble sulfur H2O-Sand Adsorbed-S) in Spartina alterniflora wetland and short leaf tibia wetland were lower than those in A transect, but the contents of HCl-Soluble-Sol and HCl-Volatile-Sol were higher than those in A transect.涓庣煭鍙惰尦鑺忔箍鍦扮浉姣，

本文編號(hào)：1715887