干旱区生态环境知识资源中心(Arid): 不同初植密度樟子松人工林对毛乌素沙地南缘土壤粒度特征的影响

Arid

	不同初植密度樟子松人工林对毛乌素沙地南缘土壤粒度特征的影响
其他题名	Effects of Different Planting Densities of Mongolian Pine on the Soil Particle Size Characteristics in Southern Mu Us Desert
	马成忠 1; 邓继峰 1; 丁国栋 2; 邓舸 1; 赵国平 3; 张若菡 4; 杨立新 1; 周永斌 1
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2017
卷号	31 期号:1 页码:230-235
中文摘要	探讨樟子松人工林林下土壤粒度特征随林分密度的变化及影响,以陕西省榆林市珍稀沙生植物保护基地内8个密度梯度(925~2 700株/hm~2)的沙地樟子松人工林为研究对象,分别采集0-20,20-40cm土层土壤样本,测定土壤粒度组成,计算并分析平均粒径、标准偏差、偏度、峰态值和分形维数。结果表明:研究区各层土壤粒度组成以砂粒为主,其次是粉粒、黏粒;粒度特征整体呈现粒径较粗、分选较差、偏度正和峰态为中至窄的特点,土壤分形维数分布于1.422~2.084之间;樟子松林林下各层土壤平均粒径和分形维数均大于裸沙地,且随着林分密度的增加,平均粒径和分形维数均呈现递增趋势,而樟子松林林下各层土壤偏度均小于裸沙地,且随着林分密度的增加,呈现递减趋势,说明土壤细粒物质在樟子松林的长期保护下逐渐恢复,并且表层土壤恢复速度大于下层土壤;同时,随林分密度的增大,标准偏差和峰态值没有明显的规律,土壤颗粒的粗细分配变化不稳定,说明林分密度因素不足以致使土壤颗粒的粗细分配朝良好趋势发展。
英文摘要	To reveal the effects of artificial Mongolian pine plantations on soil particle size parameters in southern Mu Us Desert,soil samples(taken as two layers 0-20 cm and 20-40 cm)under different plant densities(925-2 700 plants/hm~2)as well as the bare sand land(control check)were selected in Yulin rare desert plant protection base of Shaanxi Province.Soil particle size parameters such as average particle size, standard deviation,skewness,kurtosis and fractal dimension were identified and calculated by using laser diffraction technique.The results showed that in the study area,majority of soil particle size was occupied by sand particles,followed by silt particles and then clay particles.Soil particle size parameters presented comparatively thick,poor sorting,positive skewness as well as middle or sharp kurtosis.Fractal dimension of soil was in range of 1.422 to 2.084.As affected by Mongolian pine plantations,the average particle size and fractal dimension values were continue to increase leading to constantly particle distribution optimization than that of bare sand land,especially in the top layer of soil profile,such effects were more obvious.Meanwhile, there were no obvious regularities in standard deviation and kurtosis along with the increase of stand density. And distribution of soil particles was not balance.The results indicated that stand density factor was not enough to cause the thickness distribution of soil particles toward the trend of balance.
中文关键词	初植密度 ; 樟子松 ; 毛乌素沙地 ; 土壤粒度特征
英文关键词	planting density Pinus sylvestris var.mongolica Mu Us Desert soil particle size parameter
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5931033
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236667
作者单位	1.沈阳农业大学林学院, 沈阳, 辽宁 110866, 中国; 2.北京林业大学水土保持学院, 北京 100083, 中国; 3.陕西省治沙研究所, 榆林, 陕西 719000, 中国; 4.东京农业大学研究生院造园学专攻, 东京, 1568502
推荐引用方式 GB/T 7714	马成忠,邓继峰,丁国栋,等. 不同初植密度樟子松人工林对毛乌素沙地南缘土壤粒度特征的影响[J]. 北京林业大学,2017,31(1):230-235.
APA	马成忠.,邓继峰.,丁国栋.,邓舸.,赵国平.,...&周永斌.(2017).不同初植密度樟子松人工林对毛乌素沙地南缘土壤粒度特征的影响.水土保持学报,31(1),230-235.
MLA	马成忠,et al."不同初植密度樟子松人工林对毛乌素沙地南缘土壤粒度特征的影响".水土保持学报 31.1(2017):230-235.