[1]Belnap J.The world at your feet: desert biological soil crusts[J].Frontiers in Ecology and the Enviroment,2003,1(4):181-189.[2]Beymer R J,Klopatek J M.Potential contribution of carbon by microphytic crusts in pinyong-juniper woodlands[J].Arid Soil Research and Rehabilitation,1991,5(3):187-198.[3]苏延桂,李新荣,贾小红,等.温带荒漠区藻结皮固氮活性沿时间序列的变化[J].中国沙漠,2012,32(2):421-427.[4]Belnap J,Gillette D A.Disturbance of biological soil crusts:impacts on potential wind erodibility of sandy desert soils in southeastern Utah[J].Land Degradation & Development,1997,8(4):355-362.[5]Cornelissen J H C,Callaghan T V,Alatalo J M,et al.Global change and arctic ecosystems:is lichen decline a function of increases in vascular plant biomass?[J] Journal of Ecology,2001,89(6):984-994.[6]Eldridge D J,Greene R S B.Microbiotic soil crusts:a review of their roles in soil and ecological processes in the rangelands of Australia[J].Australian Journal of Soil Research,1994,32(3):389-415.[7]Belnap J,Welter J R,Grimm N B,et al.Linkages between microbial and hydrologic processes in arid and semiarid watersheds[J].Ecology,2005,86(2):298-307.[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]苏延桂,李新荣,张景光,等.生物土壤结皮对土壤种子库的影响[J].中国沙漠,2006,26(6):997-1001.[10]李新荣,陈应武,贾荣亮.生物土壤结皮:荒漠昆虫食物链的重要构建者[J].中国沙漠,2008,28(2):245-248.[11]李新荣,贾玉奎,龙利群,等.干旱半干旱地区土壤微生物土壤结皮的生态学意义及若干研究进展[J].中国沙漠,2001,21(1):4-11.[12]吴永胜,哈斯,屈志强.影响生物土壤结皮在沙丘不同地貌部位分布的风因子讨论[J].中国沙漠,2012,32(4):980-984.[13]Li X R,He M Z,Zerbe S,et al.Micro-geomorphology determines community structure of biological soil crusts at small scales[J].Earth Surface Processes and Landforms,2010,35(8):932-940.[14]Lalley J S,Viles H A,Copeman N,et al.The influence of multi-scale environmental variables on the distribution of terricolous lichens in a fog desert[J].Journal of Vegetation Science,2006,17(6):831-838.[15]Eldridge D J,Tozer M E.Environmental factors relating to the distribution of terricolous bryophytes and lichens in semi-arid eastern Australia[J].Bryologist,1997,100(1):28-39.[16]Kidron G J,Barzilay E,Sachs E.Microclimate control upon sand microbiotic crusts,western Negev Desert,Israel[J].Geomorphology,2000,36:1-18.[17]Rogers R W.Soil surface lichens on a 1500 kilometre climatic gradient in subtropical eastern Australia[J].Lichenologist,2006,38(6):565-576.[18]Ustin S L,Santos M J,Kefauver S C,et al.Remote sensing of biological soil crust under simulated climate change[J].Remote Sensing of Environment,2009,113:317-328.[19]White M A,Asner G P,Nemani R R,et al.Measuring fractional cover and leaf area index in arid ecosystems:digital camera,radiation transmittance,and laser altimetry methods[J].Remote Sensing of Environment,2000,74(1):45-57.[20]Zhou Q,Robson M.Automated rangeland vegetation cover and density estimation using ground digital images and a spectral-contextual classifier[J].International Journal of Remote Sensing,2001,22(17):3457-3470.[21]宋雪峰,董永平,单丽燕,等.用数码相机测定草地盖度的研究[J].内蒙古草业,2004,16(4):1-6.[22]张学霞,朱清科,吴根梅,等.数码照相法估算植被盖度[J].北京林业大学学报,2008,30(1):164-169.[23]Chen J,Zhang Y M,Wang L,et al.A new index for mapping lichen-dominated biological soil crusts in desert areas[J].Remote Sensing of Environment,2005,96(2):165-175.[24]Weber B,Olehowski C,Knerr T,el al.A new approach for mapping of Biological Soil Crusts in semidesert areas with hyperspectral imagery[J].Remote Sensing of Environment,2008,112(5):2187-2201.[25]Ustin S L,Santos M J,Kefauver S C,et al.Remote sensing of biological soil crust under simulated climate change[J].Remote Sensing of Environment,2009,113:317-328.[26]Bowker M A,Johnson N C,Belnap J,et al.Short-term monitoring of aridland lichen cover and biomass using photography and fatty acids[J].Journal of Arid Environments,2008,72(6):869-878.[27]任杰,柏延臣,王锦地.从数码照片中快速提取植被覆盖度的方法研究[J].遥感技术与应用,2010,25(5):719-724.[28]张元明,陈晋,王雪芹,等.古尔班通古特沙漠生物土壤结皮的分布特征[J].地理学报,2005,60(1):53-60. |