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| 1 | 强度耕作对^(137)Cs、^(210)Pb_(ex)和有机质剖面分布的影响显示文摘很少有关于直接测定强度耕作侵蚀引起土壤退化过程的报道。我们的目的是确定应用137Cs和210Pbex直接定量评价耕作侵蚀对土壤有机质(SOM)坡面运移影响的可能性。我们在黄土高原陡坡耕地上进行了50次犁耕活动,并将与其相临的另一块陡坡耕地作为对照。在对照坡地不同坡位,137Cs浓度均匀分布于上部0~30cm土层,而210Pbex浓度在坡上部和坡中部随土层深度增加呈现线性递减,在坡下部呈指数函数递减。0~30cm土层中土壤有机质含量显著大于30cm深度以下土层,并在坡中部和坡下部呈现与210Pbex类似的土壤剖面分布特征。与对照坡地比较,50次犁耕活动导致坡上部、坡中部0~45cm土层的SOM含量分别降低了38%和47%,坡下部0~100cm土层中的SOM含量却提高了18%。坡上部土壤剖面中137Cs浓度的加权平均值从1.48Bq/kg降低到0.29Bq/kg,坡中部从2.53Bq/kg减少到0.33Bq/kg,坡下部从1.48Bq/kg提高到2.81Bq/kg。210Pbex浓度的剖面加权平均值在坡上部从27.71Bq/kg下降到6.15Bq/kg,在坡中部和坡下部分别从35.46Bq/kg和25.53Bq/kg降低到1.57Bq/kg和19.40Bq/kg。137Cs和210Pbex的剖面分布与SOM在p<0.001水平呈显著相关,相关系数R2值在对照坡地为0.81~0.86,在犁耕实验坡地为0.86~0.91。实验结果表明。 | 李勇 白玲玉 张兴昌 Lindstrom M L Bork H R | 2003 | 水土保持学报2003，17，3： | 3 |
| 2 | Five ways to destroy a development project显示文摘 | Lindstrom D R | 1993 | IEEE Software1993，10，5： | 2 |
| 3 | Antarctic meteorite ALHA81005-Not just another lunar anorthositic norite显示文摘 | Korotev R L Lindstrom M M Lindstrom D J | | 0，，9： | 1 |
| 4 | Runoff and soil erosion during spring thaw in the northern US Corn Belt显示文摘 | Sharratt B S Lindstrom M J Benoit G R | 2000 | Journal of Soil and Water Conservation2000，55，4： | 1 |
| 5 | Multiplex PCR assay for detection and identification of Clostridium botulinum types A, B, E, and F in food and fecal material 显示文摘 | Lindstrom M Keto R Markkula A | 2001 | Appl Environ Microbiol2001，67，12： | 1 |
| 6 | Muscular Fatigue and Action Potential Conduction Velocity Changes Studied With Frequency Analysis of EMG signals 显示文摘 | LINDSTROM L R MAGNUSSON I PETERSEN | 1970 | Electromyography1970，4，： | 1 |
| 7 | The influence of CO2 on the NaCl-induced atmospheric corrosion of aluminum显示文摘 | BENGTSSON B D LINDSTROM R | 2001 | J of the Electrochemical Society2001，148，4： | 1 |
| 8 | The mixed layer of the western equatorial Pacific Ocean 显示文摘 | Lukas R Lindstrom E | 1991 | J Geophys Res1991，96，： | 1 |
| 9 | Simulation and field tests of the black start of a large coal-fired generating station utilizing small remote hydro generation显示文摘 | LINDSTROM R R | 1990 | IEEE Trans on Power Systems1990，5，1： | 1 |
| 10 | GABAB receptor contribute to vestibular compensation after unilateral labyrinthectomy in pigmented rats显示文摘 | Magnusson AK Lindstrom S Tham R | 2000 | Exp Brain Res2000，134，： | 1 |
| 11 | Reactions of hand-reared and wild-caught predators towards warningly colored, gregarious and conspicuous prey显示文摘 | Lindstrom L Alatalo R V Mappcs J | 1999 | Behav Ecol1999，10，： | 1 |
| 12 | Regional expression and dietary regulation of rat small intestinal peptide and amino acid transporter mRNAs显示文摘 | Erickson R H Gum J R Lindstrom M M | 1995 | Biochemical and Biophysical Research Communications1995，1，216： | 1 |
| 13 | Selection and cleaning of plastic containers for storage of trace element samples 显示文摘 | John R Moody Richard M Lindstrom | 1977 | Anal Chem1977，149，14： | 1 |
| 14 | The influence of CO2 on the NaCl-induced atmospheric corrosion of aluminium 显示文摘 | BENGTSSON B D LINDSTROM R | 2001 | Journal of the Electrochemical Society2001，148，4： | 1 |
| 15 | Analysis of anaerobic BTX biodegradation in a subarctic aquifer using isotopes and benzylsuccinates 显示文摘 | McKelvie J R Lindstrom J E Belier H R | 2005 | J Contam Hydrol2005，81，14： | 1 |
| 16 | Simulation and Field Tests of the Black Start of a Largecoal-fired Generating Station Utilizing Small Remote Hydrogeneration显示文摘 | Lindstrom R R | 1990 | IEEE Trans on Power Systems1990，5，1： | 1 |
| 17 | The mixed layer of western equatorial Pacific Ocean显示文摘 | LUKAS R LINDSTROM E | 1991 | Journal of Geophysical Research1991，96，： | 1 |
| 18 | Runoff and soil erosion during spring thaw in the northern US corn belt显示文摘 | SHARRATT B S LINDSTROM M J BENOIT G R | | 0，，04： | 1 |
| 19 | The pharmacologic and pathophysiologic rationale for using NSAIDs in ocular inflammatory disease and ocular surgery显示文摘 | Lindstrom R | 2006 | Int Ophthalmol Clin2006，46，4： | 1 |
| 20 | The effect of mechanical stretch on cyclooxygenase type 2 expression and activator protein-1 and nuclear factor-kappaB activity in human amnion cells 显示文摘 | Mohan A R Sooranna S R Lindstrom T M | 2007 | Endocrinology2007，148，4： | 1 |
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