Analysis on Soil Inorganic Carbon of Different Soil Types in the Ebinur Lake Wetland Nature Reserve in Xinjiang
Received date: 2012-06-08
Revised date: 2012-08-10
Online published: 2012-08-10
土壤无机碳(SIC)是干旱区土壤碳库的重要组成部分,分析其特征和储量是开展干旱区荒漠生态系统碳循环研究的必要基础。基于新疆艾比湖湿地自然保护区土壤剖面的实测数据,分析了不同土壤类型SIC分布特征及其差异性,估算了研究区SIC储量,并探讨SIC含量与分布、储量特点以及与土壤有机碳(SOC)和理化因子间关系。结果表明:各类型平均SIC含量为53.06~79.90 g·kg–1;类型间SIC含量有显著差异(p<0.05),50 cm以上各层SIC含量顺序为灰棕漠土>盐碱土>水成土>荒漠风沙土,50 cm以下则盐碱土和水成土逐渐占优势。SIC含量的垂直分布总体表现为低—高—低的特征(10 cm单位土壤深度),除灰棕漠土外,SIC含量在剖面上的变化较均匀。研究区无机碳密度平均为9.37 kg·m-2,SIC库储量为234.50 Tg。SIC含量与SOC及含水量呈显著的正相关,并随土壤深度增加有增加趋势;与土壤容重和表层pH值负相关,相关性较弱。
张雪妮 , 吕光辉 , 贡 璐 , 秦 璐 , 李尝君 , 孙景鑫 , 任曼丽 . 新疆艾比湖湿地自然保护区不同土壤类型无机碳分布特征[J]. 中国沙漠, 2013 , 33(4) : 1084 -1090 . DOI: 10.7522/j.issn.1000-694X.2013.00153
Soil inorganic carbon (SIC) is a significant component of arid region carbon stock. Distribution characteristics of SIC and magnitude of SIC stock are crucial premise for comprehending soil carbon cycle in desert ecosystem of arid regions. Based on the field investigations and laboratory analyses, we researched the SIC distributions and dissimilarities of different soil types, estimated SIC storage of research area and examined correlation of SIC with SOC and soil physico-chemical factors, discussions and comparative analyses were also made on aforementioned contents. The results showed that: Aaverage SIC content on the whole profile of four soil types range from 53.06 g·kg-1 to 79.90 g·kg-1; There were significant differences among various types (p<0.05). The order of SIC content on layers above 50 cm depth was grey-brown desert soil>saline and alkaline soil>hydromorphic soil>Aeolian sandy soil, but SIC content of saline and alkaline soil and hydromorphic soil increased gradually and exceeded grey-brown desert soil on layers below 50 cm depth. On vertical distribution, SIC content generally display a trend that first increasing and then decreasing as the soil depth increases (at 10 cm depth level). Profile distribution of SIC was relatively homogeneous except for that of grey-brown desert soil. Total SIC storage in study area was estimated to be 234.50 Tg to the depth investigated to 120 cm, and average SIC density was calculated to be 9.37 kg·m-2. SIC had positive correlation with soil organic carbon and water content, and which inclined to increase with soil depth slightly, as for soil bulk density and pH of surface layer, the correlation was negative and weak relatively.
[1]潘根兴.中国土壤有机碳和无机碳库量研究[J].科技通报,1999,15(5):330-332.
[2]张宁.干旱区成土碳酸钙形成机制的初步研究[D].天津:南开大学,2009.
[3]Schlesinger W H.Carbon storage in the caliche of arid soils:A case study from Arizona[J].Soil Science,1982,133(4):247-255.
[4]樊恒文,贾晓红,张景光,等.干旱区土地退化与荒漠化对土壤碳循环的影响[J].中国沙漠,2002,22(6):525-533.
[5]Mi N,Wang S Q,Liu J Y,et al.Soil inorganic carbon storage pattern in China[J].Global Change Biology,2008,14:2380-2387.
[6]崔永琴,马剑英,刘小宁,等.人类活动对土壤有机碳库的影响研究进展[J].中国沙漠,2011,31(2):407-414.
[7]王玉刚,肖笃宁,李彦,等.三工河流域绿洲土壤有机碳的空间分布[J].中国沙漠,2011,31(1):101-107.
[8]刘艳梅,李新荣,何明珠,等.生物土壤结皮对土壤微生物量碳的影响[J].中国沙漠,2012,32(3):669-673.
[9]尹飞虎,李晓兰,董云社,等.干旱半干旱区CO2浓度升高对生态系统的影响及碳氮耦合研究进展[J].地球科学进展,2011,26(2):235-244.
[10]谢霞,王宏卫,塔西甫拉提·特依拜.基于RS和GIS的艾比湖区域景观格局动态变化研究[J].中国沙漠,2010,30(5):1166-1173.
[11]吴敬禄,刘建军,王苏民.近1500年来新疆艾比湖同位素记录的气候环境演化特征[J].第四纪研究,2004,24(5):585-590.
[12]阎顺,穆桂金,远藤邦彦,等.2500年来艾比湖的环境演变信息[J].干旱区地理,2003,26(3):227-232.
[13]亢庆,于嵘,张增祥,等.基于多源数据的土地盐碱化遥感快速监测[J].遥感信息,2005,6:42-45.
[14]南京农业大学.土壤农化分析[M].北京:农业出版社,1996:36-141.
[15]章家恩.生态学常用实验研究方法与技术[M].北京:化学工业出版社,2007:218-222.
[16]杨黎芳,李贵桐,赵小蓉,等.栗钙土不同土地利用方式下有机碳和无机碳剖面分布特征[J].生态环境,2007,16(1):158-162.
[17]许乃政,张桃林,王兴祥,等.长江三角洲地区土壤无机碳库研究[J].长江流域资源与环境,2009,18(11):1038-1044.
[18]Yang Y H,Fang J Y,Ji C J,et al.Soil inorganic carbon stock in the Tibetan alpine grasslands[J].Global Biogeochemical Cycles,2010,(24):1-11.
[19]Wu H B,Guo Z T,Gao Q,et al.Distribution of soil inorganic carbon storage and its changes due to agricultural land use activity in China[J].Agriculture,Ecosystems and Environment,2009,129:413-421.
[20]张林,孙向阳,曹吉鑫,等.西北干旱区森林和草原SOC向SIC转移的研究进展[J].西北林学院学报,2010,25(2):40-44.
[21]潘根兴.中国干旱性地区土壤发生性碳酸盐及其在陆地系统碳转移上的意义[J].南京农业大学学报,1999,22(1):51-57.
[22]Wang Y G,Li Y,Ye X H.Profile storage of organic/inorganic carbon in soil:from forest to desert[J].Science of the Total Environment,2010,408:1925-1931.
[23]文振旺.新疆土壤形成的主要特点[J].新疆农业科学,1963,(2):57-65.
[24]刘梦云,常庆瑞,杨香云.黄土台塬不同土地利用方式下土壤碳组分的差异[J].植物营养与肥料学报,2010,16(6):1418-1425.
[25]张林,孙向阳,曹吉鑫,等.荒漠草原碳酸盐岩土壤有机碳向无机碳酸盐的转移[J].干旱区地理,2010,33(5):732-739.
[26]Jiménez J J,Lal R.Mechanisms of C Sequestration in Soils of Latin America[J].Critical Reviews in Plant Sciences,2006,25:337-365.
[27]Xie J X,Li Y,Zhai C X,et al.CO2 absorption by alkaline soils and its implication to the global carbon cycle[J].Environmental Geology,2009,56:953-961.
[28]Schlesinger W H,Belnap J,Marion G.On carbon sequestration in desert ecosystems[J].Global Change Biology,2009,15:1488-1490.
[29]曾骏,郭天文,包兴国,等.长期施肥对土壤有机碳和无机碳的影响[J].中国土壤与肥料,2008,2:11-14.
[30]张宁,何兴东,邬畏.腾格里沙漠 3种土壤有机质和碳酸钙特征[J].生态学报,2009,29(8):4094-4101.
[31]杨黎芳,李贵桐.土壤无机碳研究进展[J].土壤通报,2011,42(4):986-990.
[32]祖元刚,李冉,王文杰,等.我国东北土壤有机碳、无机碳含量与土壤理化性质的相关性[J].生态学报,2011,31(18):5207-5216.
[33]谭丽鹏,何兴东,王海涛,等.腾格里沙漠油蒿群落土壤水分与碳酸钙淀积关系分析[J].中国沙漠,2008,28(4):701-705.
[34]杨黎芳,李贵桐,林启美,等.栗钙土不同土地利用方式下土壤活性碳酸钙[J].生态环境学报,2010,19(2):428-432.
/
〈 |
|
〉 |