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当前位置: 首页 > 文章 > 塔里木盆地北缘绿洲-荒漠过渡带典型植物群落土壤粒度分析 西南农业学报 2019 (12) 2848-2855
Position: Home > Articles > Analysis of Soil Particle Size of Typical Plant Communities in Oasis-Desert Ecotone on Northern Margin of Tarim Basin Southwest China Journal of Agricultural Sciences 2019 (12) 2848-2855

塔里木盆地北缘绿洲-荒漠过渡带典型植物群落土壤粒度分析

作  者：
王雪梅;曹丽君
单  位：
新疆师范大学地理科学与旅游学院;新疆维吾尔自治区重点实验室"新疆干旱区湖泊环境与资源实验室"
关键词：
土壤粒径;分形维数;粒度特征;典型植物群落;绿洲-荒漠过渡带
摘  要：
【目的】对塔里木盆地北缘绿洲-荒漠过渡带典型植物群落进行土壤粒度分析可为区域植被恢复以及水资源有效利用提供依据。【方法】通过野外调查和室内分析对渭干河-库车河三角洲绿洲-荒漠过渡地带典型植物群落的土壤粒度的空间分布特征进行研究。【结果】①研究区土壤以粗砂粒、砂粒和粉砂粒为主,不同植物群落土壤粗砂粒和粉砂粒含量存在明显差异。②土壤分形维数只与黏粒含量存在显著正相关(P﹤0.01),相关系数为0.764。芦苇群落和芦苇+骆驼刺群落土壤分形维数较大,而柽柳群落和盐节木群落土壤则相反。③研究区土壤平均粒径较粗,分选性较差,粗偏程度较大,粒度较分散,土壤粒度特征在靠近绿洲的植物群落与靠近荒漠的植物群落间差异明显。④研究区土壤各粒径含量与分形维数和粒度特征值之间存在一定的显著相关性。【结论】造成不同植物群落土壤粒度差异的因素主要是土壤水分含量,其次植被覆盖度、风蚀因素、有机质含量以及人为因素等。
译  名：
Analysis of Soil Particle Size of Typical Plant Communities in Oasis-Desert Ecotone on Northern Margin of Tarim Basin
作  者：
WANG Xue-mei;CAO Li-jun;College of Geography Science and Tourism, Xinjiang Normal University;Xinjiang Uygur Autonomous Region Key Laboratory ‘Xinjiang Laboratory of Lake Environment and Resources in Arid Zone';
关键词：
Soil particle size;;Fractal dimension;;Particle size characteristics;;Typical plant community;;Oasis-desert ecotone
摘  要：
【Objective】Soil particle size analysis of typical plant communities in oasis-desert transition ecotone on northern margin of Tarim basin can provide basis for regional vegetation restoration and effective utilization of water resources.【Method】Based on field investigation, indoor analysis, the spatial distribution characteristics of soil particle size of the typical plant communities in the oasis-desert ecotone of the Weigan-Kuqa river delta were studied. 【Result】(i)The soils in the study area were mainly coarse sand, sand and powder sand, and there were obvious differences in the contents of coarse sand grains and silt grains in different plant communities.(ii) The fractal dimension of soil was only positively correlated with the content of clay particles(P<0.01), the correlation coefficient was 0.764. The soil fractal dimension of Phragmites australis community and Phragmites australis + Alhagi sparsifolia community soil was larger, but the soil fractal dimension of Tamarix ramosissima community and Halostachys caspica community was smaller.(iii)The average diameter of the soil in the study area was coarser, the sorting performance was poorer, the coarser and heavier degree was larger, the granularity was more dispersed, and the differences between the soil planting characteristics near the oasis and the plant communities close to the desert were obvious.(iv)The soil particles in the study area was a significant correlation between the diameter content and the fractal dimension and the particle size characteristic value. 【Conclusion】The main factors causing the differences in soil particle size of different plant communities were soil moisture content, secondary vegetation coverage, wind erosion factors, organic matter content and human factors.

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