生物结皮对内蒙古沙地灌丛草地土壤呼吸特征的影响

doi:10.13249/j.cnki.sgs.2010.06.898

地理科学 ›› 2010, Vol. 30 ›› Issue (6): 898-903.doi: 10.13249/j.cnki.sgs.2010.06.898

生物结皮对内蒙古沙地灌丛草地土壤呼吸特征的影响

齐玉春¹, 董云社¹, 金钊², 肖胜生^1,3, 彭琴^1,3, 何亚婷^1,3, 刘欣超^1,3

1. 中国科学院地理科学与资源研究所, 北京 100101;
2. 中国科学院地球环境研究所, 陕西西安 710075;
3. 中国科学院研究生院, 北京 100049

收稿日期:2010-02-18 修回日期:2010-04-16 出版日期:2010-11-20 发布日期:2010-11-20
通讯作者: 董云社,研究员。E-mail:dongys@igsnrr.ac.cn E-mail:dongys@igsnrr.ac.cn
基金资助:
国家自然科学基金项目(40730105,40973057,40501072)、国家科技支撑计划重大项目(2007BAC03A11- 02)资助。

Effects of Biological Soil Crust on Soil Respiration Characteristics in Sandy Shrubland in Inner Mongolia, China

QI Yu-chun¹, DONG Yun-she¹, JIN Zhao², XIAO Sheng-sheng^1,3, PENG Qin^1,3, HE Ya-ting^1,3, LIU Xin-chao^1,3

1. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101;
2. Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, Shaanxi 710075;
3. Graduate University of the Chinese Academy of Sciences, Beijing 100049

Received:2010-02-18 Revised:2010-04-16 Online:2010-11-20 Published:2010-11-20

摘要/Abstract

摘要： 利用静态暗箱法分析生物结皮对内蒙古典型油蒿沙地灌丛草地土壤呼吸变化特征及水热敏感性影响。结果表明:生物结皮(BSC)与裸地(BG)土壤呼吸速率表现出类似的季节变化动态,BSC土壤呼吸年内变异系数约66.6%~81.7%,高于同期BG的50.9%~76.5%,其年际变异(22.4%)远大于BG(8.0%);BSC生长季土壤呼吸总量约126.88~186.07 gC/m²,显著高于BG(91.22~100.90 gC/m²)(p<0.05);BSC土壤呼吸对表层土壤水分变化的响应较BG更敏感,两个年份生长季BSC与BG表层0~10 cm土壤含水量变化分别能够解释土壤呼吸变异的81.3%,53.2%,57.8%以及55.4%。

Abstract: A two-year field experiment was carried out in Artemisia ordosica sandy shrubland in the Ordos Plateau of Inner Mongolia, China, in 2006-2007 using a static opaque chamber with an infrared CO₂ gas analyzer technique. The effects of biological crust on the main characteristics of soil respiration and its sensitivity to the change of water-heat factors were analyzed. The results indicated that similar seasonal dynamic was found in the BSC and BG. The coefficients of variation (CVs) for soil respiration of BSC in different growing seasons ranged from 66.6% to 81.7%, higher than those of BG, which were in the range of 50.9%-76.5% for the same period, and the inert-annual CV of BSC (22.4%) was also higher than that of BG (8.0%). The existence of biological crusts enlarged the annual and inter-annual variation in soil respiration. The total soil respiration of different growing seasons for the BSC treatment were 126.88-186.07 g C/m², significantly higher than those of 91.22-100.90 g C/m² for the BG treatment. In the growing season, the soil respiration rates were significantly related to surface soil water contents, and the change of soil respiration rate was more sensitive to that of soil water contents in BSC than in BG for the two measured years. 81.3%, 53.2%, 57.8% and 55.4% of variation in soil respiration could be explained by the change in 0-10 cm soil water content for BSC and BG treatments in the two years, respectively.

中图分类号:

S154.1/X171.1

齐玉春, 董云社, 金钊, 肖胜生, 彭琴, 何亚婷, 刘欣超. 生物结皮对内蒙古沙地灌丛草地土壤呼吸特征的影响[J]. 地理科学, 2010, 30(6): 898-903.

QI Yu-chun, DONG Yun-she, JIN Zhao, XIAO Sheng-sheng, PENG Qin, HE Ya-ting, LIU Xin-chao. Effects of Biological Soil Crust on Soil Respiration Characteristics in Sandy Shrubland in Inner Mongolia, China[J]. SCIENTIA GEOGRAPHICA SINICA, 2010, 30(6): 898-903.

参考文献

[1] Belnap J.The world at your feet:desert biological soil crusts[J].Frontiers in Ecology and the Environment,2003, 1(5):181–189.
[2] 崔燕,吕贻忠,李保国.鄂尔多斯沙地土壤生物结皮的理化性质[J].土壤,2004,36(2):197~202.
[3] Cable J M,Huxman T E.Precipitation pulse size effects on Sonoran Desert soil microbial crusts[J].Oecologia,2004, 141(2):317–324.
[4] 程琴娟,蔡强国,郑明国.黄土土壤结皮对产流临界雨强的影响分析[J].地理科学,2007,27(5):678~682.
[5] Rajot J L,Alfaro S C,Gomes L,et al.Soil crusting on sandy soils and its influence on wind erosion[J].Catena,2003,53(1):1-16.
[6] Belnap J.Nitrogen fixation in biological soil crusts from southeast Utah,USA[J].Biology and Fertility of Soils,2002,35(2):128-135.
[7] Thompson D B,Walker L R,Landau F H,et al.The influence of elevation, shrub species,and biological soil crust on fertile islands in the Mojave Desert,USA[J].Journal of Arid Environments,2005,61(4):609-629.
[8] 张元明,杨维康,王雪芹,等.生物结皮影响下的土壤有机质分异特征[J].生态学报,2005,25(12):3420~3425.
[9] Evans R D,Lange O L.Biological soil crusts and ecosystem N and C dynamics.//Belnap J,Lange O L.Biological soil crusts structure,function,and management.Berlin:Springer-Verlag,2003:263-279.
[10] Zaady E,Kuhn U,Wilske B,et al.Patterns of CO₂ exchange in biological soil crusts of successional age[J].Soil Biology and Biochemistry,2000,32:959-966.
[11] Thomas A D,Hoon S R,Linton P E.Carbon dioxide fluxes from cyanobacteria crusted soils in the Kalahari[J].Applied Soil Ecology,2008,39:254-263.
[12] Burgheimer J,Wilske B,Maseyk K,et al.Ground and space spectral measurements for assessing the semi-arid ecosystem phenology related to CO₂ fluxes of biological soil crusts[J].Remote sensing of Environment,2006,101:1-12.
[13] Lange O L,Kidron G J,Büdel B,et a1.Taxonomic composition and photosynthetic characteristics of the "biological soil crusts"covering sand dunes in the Western Negev Desert[J].Functional Ecology,1992,6(5):519-527.
[14] 李玉强,赵哈林,赵玮,等.生物结皮对土壤呼吸的影响作用初探[J].水土保持学报,2008,22(3):106~109,151.
[15] 史作民,刘世荣,程瑞梅.内蒙古鄂尔多斯地区四个植物群落类型的土壤碳氮特征[J].林业科学,2004,40(2): 21~ 27.
[16] 郭轶瑞,赵哈林,赵学勇,等.科尔沁沙地结皮发育对土壤理化性质影响的研究[J].水土保持学报,2007,21(1): 135~139.
[17] 毕江涛,贺达汉,黄泽勇.退化生态系统土壤微生物种群数量和分布对植被恢复的响应[J].地理科学,2009,29(2):238~243.
[18] 赵俊芳,延晓冬,贾根锁.基于FORCCHN的未来东北森林生态系统碳储量模拟[J].地理科学,2009,29(5):690~ 696.
[19] Maestre F T,Cortina J.Small-scale spatial variation in soil CO₂ efflux in a Mediterranean semiarid steppe[J].Applied Soil Ecology,2003,23(3):199–209.
[20] 孙艳丽,马建华,李灿.开封市不同功能区城市土壤有机碳含量与密度分析[J].地理科学,2009,29(1):124~128.
[21] 张金波,宋长春,杨文燕.沼泽湿地垦殖对土壤碳动态的影响[J].地理科学,2006,26(3):340~344.
[22] 窦晶鑫,刘景双,王洋,等.三江平原草甸湿地土壤有机碳矿化对C/N的响应[J].地理科学,2009,29(5): 773~778.
[23] 宋长春,王毅勇,王跃思,等.人类活动影响下淡水沼泽湿地温室气体排放变化[J].地理科学,2006,26(1):82~86.
[24] 邵玉琴,赵吉.不同固沙区结皮中微生物生物量和数量的比较研究[J].中国沙漠,2004,24(1):68~71.
[25] Burgheimer J,Wilske B,Maseyk K,et al.Relationships between normalized difference vegetation index (NDVI) and carbon fluxes of biologic soil crusts assessed by ground measurements[J].Journal of Arid Environments,2006,64(4):651–669.
[26] Cheng X L,An S Q,Li B,et al.Summer rain pulse size and rainwater uptake by three dominant desert plants in a desertified grassland ecosystem in northwestern China[J]. Plant Ecology,2006,184(1):1-12.
[27] 薛英英,闫德仁,李钢铁.鄂尔多斯地区沙漠生物结皮特征研究[J].内蒙古农业大学学报,2007,28(2):102~105.

生物结皮对内蒙古沙地灌丛草地土壤呼吸特征的影响

Effects of Biological Soil Crust on Soil Respiration Characteristics in Sandy Shrubland in Inner Mongolia, China

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