本文關(guān)鍵詞： 東道海子 表層沉積物 總氮 有機(jī)質(zhì) 有機(jī)污染　出處：《新疆農(nóng)業(yè)大學(xué)學(xué)報(bào)》2016年04期 　論文類型：期刊論文

【摘要】：采集了新疆烏魯木齊東道海子表層沉積物,研究了沉積物中氮營(yíng)養(yǎng)鹽和有機(jī)質(zhì)的含量并進(jìn)行評(píng)價(jià)。結(jié)果表明,東道海子表層沉積物枯水期總氮含量總體較平水期高,且枯水期氨氮占總氮含量百分比總體較平水期低,枯水期表層沉積物總氮平均含量為5 176 mg/kg,介于2 177~6 447 mg/kg;有機(jī)質(zhì)平均含量659 mg/kg,介于357~968mg/kg。平水期表層沉積物總氮平均含量3 890 mg/kg,介于3 355~5 209 mg/kg;有機(jī)質(zhì)平均含量3 647mg/kg,介于2 320~4 814 mg/kg。豐水期表層沉積物中總氮平均含量為960 mg/kg,介于590~1 654mg/kg;有機(jī)質(zhì)平均含量5 299mg/kg,介于2 660~8 543mg/kg�？菟谟袡C(jī)氮污染最為嚴(yán)重,豐水期主要由于降雨和冰川融水補(bǔ)給水源,總氮含量明顯下降。有機(jī)質(zhì)含量主要與漁民養(yǎng)殖魚類有關(guān),魚類的殘餌和排泄物的不斷沉降、積累使有機(jī)質(zhì)含量在豐水期魚類養(yǎng)殖旺季達(dá)到最高值�？偭�、總有機(jī)碳含量均處于安全限值之內(nèi),東道海子主要污染為氮營(yíng)養(yǎng)鹽污染,且污染嚴(yán)重,東道海子今后的研究應(yīng)對(duì)氮營(yíng)養(yǎng)鹽予以重視。
[Abstract]:The surface sediments of Dongdaohaizi in Urumqi Xinjiang were collected and the contents of nitrogen nutrients and organic matter in the sediments were studied and evaluated. The total nitrogen content of surface sediments in Dongdao-Haizi was higher than that in normal water period, and the percentage of ammonia nitrogen in total nitrogen content in dry season was lower than that in flat water period. The average content of total nitrogen in surface sediments during dry season was 5 176 mg / kg, which ranged from 2 177 mg / kg to 6 447 mg / kg; The average content of organic matter is 659 mg / kg, which is between 357 and 968 mg / kg. The average total nitrogen content of surface sediments in the plain water period is 3 890 mg/kg. Between 3 355 and 5 209 mg / kg; The average content of organic matter was 3 647 mg / kg, which ranged from 2 320 mg / kg to 4 814 mg / kg. The average content of total nitrogen in surface sediments in high water period was 960 mg/kg. Between 590 mg / kg and 1654 mg / kg; The average content of organic matter is 5 299 mg / kg, which is between 2 660 mg / kg and 8 543 mg / kg. The pollution of organic nitrogen is the most serious in dry season, which is mainly due to rainfall and glacial water recharge in high water season. The content of organic matter was mainly related to the fish cultured by fishermen. The accumulation of residual bait and excreta of fish resulted in the highest content of organic matter in the peak season of fish culture in the high water season. The total organic carbon content is within the safe limit. The main pollution of Dongdaozi is nitrogen nutrient pollution, and the pollution is serious. The future study of Dongdaohaizi should pay more attention to nitrogen nutrient salt.
【作者單位】： 新疆農(nóng)業(yè)大學(xué)草業(yè)與環(huán)境科學(xué)學(xué)院;新疆環(huán)境保護(hù)科學(xué)研究院新疆環(huán)境污染監(jiān)控與風(fēng)險(xiǎn)預(yù)警重點(diǎn)實(shí)驗(yàn)室;
【基金】：新疆維吾爾自治區(qū)自然科學(xué)基金項(xiàng)目(2015211B025)
【分類號(hào)】：X524;X824
【正文快照】： 險(xiǎn)預(yù)警重點(diǎn)實(shí)驗(yàn)室,烏魯木齊830063)(1.College of Pratacultural and Environmental Sciences,Xinjiang Agricultural University,Urumqi830000,China;2.Xinjiang Adcademy of Environmental Protection Science/Xinjiang Key Labora-tory for Environmental Pollution Monito

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