ANALYSIS ON THE CHANGES OF ORGANIC MATTERS AND THEIR INFLUENCING FACTORS OF TYPICAL BLACK SOIL AREAS IN SONGLIAO PLAIN
LIU Chi1, LIU Xi-yao2, LIU Peng3
1. Shenyang Center of China Geological Survey, Shenyang 110034, China; 2. Liaoning Geological and Mineral Survey Institute Co., Ltd., Shenyang 110032, China; 3. Liaoning Institute of Mineral Exploration Co., Ltd., Shenyang 110032, China
Abstract：Based on the results of multi-objective regional geochemical survey in the south-central Songliao Plain during 2003-2008, the paper studies the distribution characteristics of organic matters in typical black soil areas, proposing that the organic contents in the typical black soil areas along Suihua-Harbin-Siping are characterized by latitudinal zoning distribution, with decreasing gradually from north to south. By analyzing the influencing factors of soil organic matters, it is considered that the parent material and soil texture are important basis for organic contents. The lacustrine sediments and soil with fine texture containing clayey components usually have high organic matter contents. Climate conditions such as temperature and precipitation are the key factors affecting soil organic matters. Low temperature and humid climate are conducive to organic matter accumulation. Human factors such as long cultivation, continuous cropping and fertilizer use can reduce organic content.
刘驰, 刘希瑶, 刘澎. 松辽平原典型黑土区有机质的变化及影响因素分析[J]. 地质与资源, 2020, 29(6): 550-555.
LIU Chi, LIU Xi-yao, LIU Peng. ANALYSIS ON THE CHANGES OF ORGANIC MATTERS AND THEIR INFLUENCING FACTORS OF TYPICAL BLACK SOIL AREAS IN SONGLIAO PLAIN. GEOLOGY AND RESOURCES, 2020, 29(6): 550-555.
2020, Vol. 29 
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