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        土地利用方式影響下的贛江硝態(tài)氮濃度和氮穩(wěn)定同位素分布特征*

        2015-03-20 02:01:44齊述華
        湖泊科學 2015年6期
        關鍵詞:坑塘贛江旱地

        王 鵬,齊述華,陳 波

        (1:江西師范大學鄱陽湖濕地與流域研究教育部重點實驗室,南昌 330022;2:江西師范大學地理與環(huán)境學院,南昌 330022 ;3:中國科學院陸地水循環(huán)及地表過程重點實驗室,北京 100101)

        土地利用方式影響下的贛江硝態(tài)氮濃度和氮穩(wěn)定同位素分布特征*

        王 鵬1,2,3,齊述華1,2,陳 波1,2

        (1:江西師范大學鄱陽湖濕地與流域研究教育部重點實驗室,南昌 330022;2:江西師范大學地理與環(huán)境學院,南昌 330022 ;3:中國科學院陸地水循環(huán)及地表過程重點實驗室,北京 100101)

        贛江;鄱陽湖;硝態(tài)氮;氮穩(wěn)定同位素;土地利用

        1 材料與方法

        1.1 樣品采集與分析

        圖1 贛江流域采樣點與子流域劃分(S1~S20表示采樣點,Z1~Z20表示相應子流域)Fig.1 Sample sites and sub basins in Ganjiang Basin (S1-S20 represent sample sites, and Z1-Z20 represent sub basins)

        1.2 子流域與土地利用類型

        對S1~S20采樣點,基于Aster 30m精度的DEM數(shù)據(jù),利用ArcGIS的Hydrology模塊劃分采樣點對應的子流域,相應劃分為20個子流域.土地利用數(shù)據(jù)利用2010年秋季獲取的無云Landsat衛(wèi)星遙感影像,經(jīng)過幾何糾正,參照《環(huán)境狀況評價技術規(guī)范》(HJ/T 192-2006)中土地利用分類方法,基于ArcInfo Workstation,并結合人工目視解譯獲得.該土地利用體系的一級分類劃分為林地、草地、居民建設用地、水域、旱地、水田和未利用地共7種類型,根據(jù)地形地貌、林地郁閉度和草地覆蓋度等條件建立二級分類體系(圖2).該數(shù)據(jù)庫經(jīng)過內業(yè)校核和外業(yè)核查,一級分類的總體精度達到90%以上,二級分類精度大于85%.

        1.3 數(shù)據(jù)分析

        圖2 贛江流域土地利用類型(圖例代碼見表1)Fig.2 Land use patterns in Ganjiang Basin(Legend code are shown in table 1)

        一級分類(代碼)二級分類(代碼)水田山區(qū)水田(111);丘陵水田(112);平原水田(113);大于25°坡地水田(114)旱地山區(qū)旱地(121);丘陵旱地(122);平原旱地(123);大于25°坡地旱地(124)林地 有林地(21):郁閉度>50%的天然林和人工林;灌木林(22):郁閉度>40%、高度在2m以下的矮林地和灌叢林地;疏林地(23):郁閉度為10%~30%;其它林地(24):未成林造林地、跡地、苗圃及各類園地草地 高覆蓋度草地(31):覆蓋度>50%;中覆蓋度草地(32):覆蓋度20%~50%;低覆蓋度草地(33):覆蓋度5%~20%水域河渠(41);湖泊(42);水庫坑塘(43);灘地(46)居民建設用地城鎮(zhèn)用地(51);農(nóng)村居民用地(52);其它工礦建設用地(53)未利用土地沼澤地(64);裸土地(65);裸巖石礫地(66)

        1) 將采樣點控制的子流域分為相鄰控制流域和總控制流域2種空間尺度.相鄰控制流域指從某采樣點至上游相鄰采樣點間的流域匯水范圍,總控制流域指某采樣點在贛江流域內總的流域匯水范圍.如S3的相鄰控制流域為Z3,總控制流域為Z1+Z2+Z3.

        2 結果

        圖3 贛江濃度和值的分布(S19和S20點位只在6月采集,S10點位6月沒有檢測出值)

        圖4 贛江濃度和值的關系(生活污水、土壤氮和合成化肥的15N取值范圍參考文獻[19-20])(Ranges of 15N for domestic sewage, soil N and fertilizer are taken from references[19-20])

        流域劃分參數(shù)月份旱地林地草地水田居民建設用地水域相鄰控制流域NO-3-N1月-0.67**0.49* 6月-0.57*0.58* δ15N-NO-31月-0.51*0.59**6月-0.46*總控制流域NO-3-N1月-0.55*-0.63**0.54* 0.62**0.69**6月δ15N-NO-31月-0.81**-0.60**0.67**0.55* 0.73**6月-0.73**

        **表示在0.01水平(雙側)上顯著相關,*表示在0.05水平(雙側)上顯著相關,下同.

        流域劃分參數(shù)月份相關性結果相鄰控制流域NO-3-N1月水庫坑塘0.57*;農(nóng)村用地0.73**;山區(qū)旱地-0.63**;平原旱地0.64**6月 湖泊0.50*;水庫坑塘0.53*;山區(qū)水田-0.51*;丘陵水田0.57*;山區(qū)旱地-0.48*δ15N-NO-31月水庫坑塘0.52*;農(nóng)村用地0.59**;平原水田0.56*;平原旱地0.54*6月總控制流域 NO-3-N 1月 高覆蓋度草地-0.51*;湖泊0.58*;水庫坑塘0.73**;城鎮(zhèn)用地0.73**;農(nóng)村用地0.65**6月湖泊0.52*;城鎮(zhèn)用地0.55*δ15N-NO-3 1月 高覆蓋度草地-0.66**;河渠0.64**;湖泊0.53*;水庫坑塘0.63**;城鎮(zhèn)用地0.50*;農(nóng)村用地0.56*6月高覆蓋度草地-0.62**;湖泊0.46*

        3 討論

        4 結論

        致謝:本研究的同位素分析實驗得到中國科學院遺傳與發(fā)育生物學研究所的研究生趙煥、孔曉樂和梁慧雅的幫助,在此表示感謝.

        [1] Mcisaac GF, David MB, Gertner GZetal. Eutrophication: Nitrate flux in the Mississippi River. 2001, 414(6860): 166-167.

        [2] Townsend-Small A, Mccarthy MJ, Brandes JAetal. Stable isotopic composition of nitrate in Lake Taihu, China, and major inflow rivers.Hydrobiologia, 2007, 194: 135-140.

        [3] 余進祥,劉婭菲,鐘曉蘭等.鄱陽湖水體富營養(yǎng)化評價方法及主導因子研究.江西農(nóng)業(yè)學報,2009,21(4):125-128.

        [4] 陳曉玲,張 媛,張 琍等.豐水期鄱陽湖水體中氮、磷含量分布特征.湖泊科學,2013,25(5):643-648.DOI 10.18307/2013.0504.

        [5] Wu Z, Cai Y, Liu Xetal. Temporal and spatial variability of phytoplankton in Lake Poyang: The largest freshwater lake in China.JournalofGreatLakesResearch, 2013, 39(3): 476-483.

        [6] 劉倩純,余 潮,張 杰等.鄱陽湖水體水質變化特征分析.農(nóng)業(yè)環(huán)境科學學報,2013,(6):1232-1237.

        [7] 王毛蘭,周文斌.鄱陽湖水體無機氮時空分布特征研究.人民長江,2010,41(1):88-91.

        [8] 王毛蘭,周文斌,胡春華.贛江流域水體無機氮分布特征.南昌大學學報:理科版,2007,31(3):271-275.

        [9] 王毛蘭,胡春華,周文斌.豐水期鄱陽湖氮磷含量變化及來源分析.長江流域資源與環(huán)境,2008,17(1):138-142.

        [10] Ohte N, Dahlgren RA, Silva SRetal. Sources and transport of algae and nutrients in a Californian river in a semi-arid climate.FreshwaterBiology, 2007, 52(12): 2476-2493.

        [11] 陳法錦,李學輝,賈國東.氮氧同位素在河流硝酸鹽研究中的應用.地球科學進展,2007,(12):1251-1257.

        [12] Kendall C. Tracing nitrate sources and cycling in catchments. In:Kendall C, McDonnell JJ eds.Isotope tracers in catchment hydrology. Amsterdam:Elsevier, 1998: 519-576.

        [13] Bedard-Haughn A, Van Groenigen JW, Van Kessel C. Tracing N through landscapes: potential uses and precautions.JournalofHydrology, 2003, 272(1/2/3/4): 175-190.

        [14] Voss M, Deutsch B, Elmgren Retal. Source identification of nitrate by means of isotopic tracers in the Baltic Sea catchments.Biogeosciences, 2006, 3(4): 663-676.

        [15] Ide J, Somura H, Nakamura Tetal. Hydrological effects on relationships between δN of river nitrate and land use in a rural river basin, western Japan.RiverResearchandApplications, 2014. DOI: 10.1002/rra.2756.

        [16] 王開然,郭 芳,姜光輝等.N和O在桂林巖溶水氮污染源示蹤中的應用.中國環(huán)境科學,2014,34(9):2223-2230.

        [17] 向速林.贛江流域農(nóng)田地表徑流氮磷遷移與流失研究.生態(tài)環(huán)境學報,2013,22(7):1204-1207.

        [18] Silva S R, Kendall C, Wilkison DHetal. A new method for collection of nitrate from fresh water and the analysis of nitrogen and oxygen isotope ratios.JournalofHydrology,2000, 228(1/2): 22-36.

        [19] Nestler A, Berglund M, Accoe Fetal. Isotopes for improved management of nitrate pollution in aqueous resources: review of surface water field studies.EnvironmentalScienceandPollutionResearch, 2011, 18(4): 519-533.

        [20] Xue D, Botte J, De Baets Betal. Present limitations and future prospects of stable isotope methods for nitrate source identification in surface-and groundwater.WaterResearch, 2009, 43(5): 1159-1170.

        [21] 羅 璇,史志華,尹 煒等.小流域土地利用結構對氮素輸出的影響.環(huán)境科學,2010,31(1):58-62.

        [22] Bu H, Meng W, Zhang Yetal. Relationships between land use patterns and water quality in the Taizi River basin, China.EcologicalIndicators, 2014, 41: 187-197.

        [23] 孫然好,陳利頂,王 偉等.基于“源”“匯”景觀格局指數(shù)的海河流域總氮流失評價.環(huán)境科學,2012,33(6):1784-1788.

        [24] 李兆富,楊桂山,李恒鵬.西苕溪典型小流域土地利用對氮素輸出的影響.中國環(huán)境科學,2005,25(6):678-681.

        [25] Nielsen A, Trolle D, Sndergaard Metal. Watershed land use effects on lake water quality in Denmark.EcologicalApplications, 2012, 22(4): 1187-1200.

        [26] Xue D, De Baets B, Van Cleemput Oetal. Use of a Bayesian isotope mixing model to estimate proportional contributions of multiple nitrate sources in surface water.EnvironmentalPollution, 2012, 161: 43-49.

        [27] Smith EL, Kellman LM. Examination of nitrate concentration, loading and isotope dynamics in subsurface drainage under standard agricultural cropping in Atlantic Canada.JournalofEnvironmentalManagement, 2011, 92(11): 2892-2899.

        [28] 陳惟財,陳偉琪,張珞平等.九龍江流域地表水中硝酸鹽來源辨析.環(huán)境科學,2008,29(6):1484-1487.

        [29] Johannsen A, D?hnke K, Emeis K. Isotopic composition of nitrate in five German rivers discharging into the North Sea.OrganicGeochemistry, 2008, 39(12): 1678-1689.

        [30] 趙中華,邱祖民.桃江流域農(nóng)業(yè)區(qū)氮平衡及時空差異性.水電能源科學,2012,30(5):83-86.

        [31] Li S, Liu C, Li Jetal. Assessment of the sources of nitrate in the Changjiang River, China using a nitrogen and oxygen isotopic approach.EnvironmentalScience&Technology, 2010, 44(5): 1573-1578.

        [32] 徐劉凱,王全金,向速林等.贛江下游地區(qū)各類非點源污染源的影響研究.華東交通大學學報,2012,(1):48-53.

        [33] 王毛蘭,賴建平,胡珂圖等.鄱陽湖表層沉積物有機碳、氮同位素特征及其來源分析.中國環(huán)境科學,2014,34(4):1019-1025.

        Characteristics of nitrate and nitrogen stable isotope in Ganjiang River under the influence of land use

        WANG Peng1,2,3, QI Shuhua1,2& CHEN Bo1,2

        (1:KeyLaboratoryofPoyangLakeWetlandandWatershedResearch,MinistryofEducation,JiangxiNormalUniversity,Nanchang330022,P.R.China2:SchoolofGeographyandEnvironment,JiangxiNormalUniversity,Nanchang330022,P.R.China3:KeyLaboratoryofWaterCycleandRelatedLandSurfaceProcesses,ChineseAcademyofSciences,Beijing100101,P.R.China)

        Identifying the source of nitrate in the Ganjiang River has great significance to eutrophication control in the Lake Poyang,since the nitrate in the Ganjiang River is the main source of nitrogen input into the lake. Based on the investigation of NO -3 -N andδ15N-NO -3 in the mainstream and major tributaries of the Ganjiang River in January and June of 2013,the characteristics of nitrateand nitrogen stable isotope and the influence from land use were analyzed through different spatial scales and classification levels.The ranges of NO -3 -N concentration in dry season and wet season were 0. 52 - 4. 58 mg /L and 0. 81-2. 60 mg /L,respectively,andtheir mean value had no significant difference between the two seasons. The ranges of δ15N-NO -3 in dry season and wet season were- 1. 31‰-8. 60‰ and 2. 49‰-8. 51‰,respectively,which were significantly lower in dry season. Land use with larger spatialscales had more significant correlation with NO -3 -N and δ15N-NO -3 . The NO -3 -N concentration and δ15N-NO -3 in Gangjiang Riverwere significantly positively correlated with the area of paddy field,residential land and water,and significantly negatively correlated with the area of forest land and grass land. However,this correlation decreased in wet season. Compared to the first level of land use classification,the second level of land use classification was more helpful to reflect the correlation of land use with NO -3 -N,while little help for δ15N-NO -3 . Agricultural land,especially hill paddy field and plain dry land,was the main source of NO -3 -N. Compared with other area in the Yangtze River Basin,there was a smaller proportion of NO -3 -N coming from domestic sewage in the Ganjiang River Basin.

        Ganjiang River; Lake Poyang; nitrate; nitrogen stable isotope; land use

        J.LakeSci.(湖泊科學), 2015, 27(6): 1011-1019

        DOI 10.18307/2015.0604

        ?2015 byJournalofLakeSciences

        國家自然科學基金項目(41201033)、鄱陽湖濕地與流域研究教育部重點實驗室主任開放基金項目(ZK2013009)、中國科學院陸地水循環(huán)及地表過程重點實驗室開放基金項目(WL2013004)和江西省重大生態(tài)安全問題監(jiān)控協(xié)同創(chuàng)新中心項目(JXS-EW-00)聯(lián)合資助.

        2014-12-19收稿;2015-02-11收修改稿.

        王鵬(1982~),男,博士,副教授;E-mail:wangpengjlu@gmail.com.

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