| 摘要: |
| 利用土壤原样研究了中国6种典型地带性土壤的红外光谱特性。结果表明，砖红壤、红壤红外光谱属于高岭石型图谱，显著的3 695,3 620,1 035 cm-1峰以及3 527 cm-1峰可作为用红外光谱判断热带、南亚热带地带性土壤的特征峰。黄棕壤、褐土、黑垆土、黄绵土在红外光谱为蒙脱石型图谱，较弱的3 621 cm-1峰，3 435和1 028～1 032 cm-1的强宽度，以及显著的1 437 cm-1峰可作为温带半湿混凝土－半干旱地区石灰性土壤红外光谱的特征标志。黄棕壤是石灰性土壤向热带、南亚热带地区过渡的地带性土壤，其红外光谱标志为较宽的3 435,1 032 cm-1吸收带和明显的3 620 cm-1吸收峰，以及较弱的3 695 cm-1峰，但没有1 437 cm-1峰。中国从南到北，土壤红外光谱的3 696,3 621 cm-1峰、石英双峰（798,780 cm-1)的797 cm-1峰吸收强度逐渐减弱，而石英双峰的780 cm-1峰吸收强度逐渐增强。 |
| 关键词: 土壤 红外光谱特征 土壤地带性 |
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| 基金项目:国家自然科学基金资助项目(49901009) |
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| The characteristics of infrared spectrum of 6 typical zonal soils in China |
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| Abstract: |
| The infrared spectra of 6 typical zonal soils were obtained with different treatments.The infrared spectra of latosol and red soil fall into the kaolinite spectrum.On the other hand,the infrared spectra of yellow brown soil,lou soil,heilu soil,loessal soil fall into the montmorillonite spectrum.The strong 3 695,3 620,1 035 cm-1 peaks and 3 527 cm-1 peak can be considered as the characteristic absorption bands to judge the zonal soils of tropical and south subtropical zones.The weak 3 620 cm-1 peak,the strong 3 435,1 028-1 032 cm-1 broad bands,and strong 1 437 cm-1 peak can be used to judge the temperate zonal calcareous soils.Yellow brown soil is the transitional zonal soil from temperate zonal calcareous soils to tropical and south subtropical zonal soils,whose infrared spectrum includes the broad 3 435,1 032 cm-1 bands,strong 3 620 cm-1 peak,weak 3 695 cm-1 peak,and without 1 437 cm-1 peak.From south to north,the absorption intensity of 3 696,3 621,797 cm-1 bands decrease,otherwise,that of 780 cm-1 band increase. |
| Key words: soil infrared spectra soil zonality |
