干旱区生态环境知识资源中心(Arid): 人工梭梭林对沙地土壤理化性质和微生物的影响

Arid

	人工梭梭林对沙地土壤理化性质和微生物的影响
其他题名	Effects of Haloxylon ammodendron planting on soil physico-chemical properties and soil microorganisms in sandy dunes
	席军强 1; 杨自辉 1; 郭树江 2; 王强强 2; 张剑挥 2; 王多泽 2
来源期刊	草业学报
ISSN	1004-5759
出版年	2015
卷号	24 期号:5 页码:44-52
中文摘要	选取民勤生长20年的人工梭梭林沙丘和流动沙丘为对象,研究梭梭林发育过程中沙丘土壤理化性质、微生物数量的变化以及二者之间的相关性,旨在探讨人工梭梭林对沙丘土壤形成的影响,为干旱区沙化土地治理提供科学依据。结果表明,营造梭梭林使其林内土壤得到较好的改善。1)土壤粘粒、粉粒和细砂粒含量分别增加71.51%,70.64%,12.09%;有机质、全氮、全磷、全钾、水解氮、速效钾、速效磷和CaCO_3含量均增加;2)细菌、放线菌数量分别增加38.43%,32.52%,真菌数量减少75.38%,土壤碱化程度得到缓解;3)在50~100 cm土层,梭梭蒸腾消耗使土壤水分含量相对减少;4)土壤微生物和土壤理化性质均具较好的相关性,尤其是真菌和放线菌数量与pH值呈显著的负相关关系(P<0.05),有机质含量与细菌和真菌数量呈显著的正相关关系(P<0.05);土壤微生物数量与土壤粒度大小、土壤含水量之间呈线性关系且不显著(P>0.05)。可见,梭梭林的建立有利于改善土壤物理结构,提高土壤肥力,加快沙地成土进程。
英文摘要	In this research, the soil microbe populations, soil physical and chemical properties, and the correlation between microbe populations and soil properties of a 20-year old Haloxylon ammodendron plantation in sandy dunes and moving sandy dunes in Minqin were studied. The research aimed to explore the influence of H. ammodendron planting on soil formation on sand dunes and provide a scientific basis for desert land management in arid areas. The results showed that soil in the H. ammodendron plantation was much improved. Soil clay, silt and fine sand contents were increased 71.51%, 70.64%and 12.09%, respectively, compared to nearby unplanted areas. The contents of organic matter, total nitrogen, total phosphorus, total potassium, hydrolytic nitrogen, potassium, available phosphorus and CaCO_3 were increased as well. In addition, the quantities of bacteria and actinomycetes were increased by 38.43% and 32.52%, respectively, while presence of fungi was decreased by 75.38%. Soil alkalinity was also reduced. Soil moisture contents were reduced which can be attributed to transpiration withdrawal of water by H. ammodendron in the 50-100 cm soil depth. Soil microbe populations were highly correlated with soil physical and chemical properties, especially fungi and actinomycetes, which showed a strong negative correlation with pH value (P<0.05); and soil organic matter level displayed an obvious positive correlation with numbers of bacteria and fungi (P<0.05). Soil microbe quantities have a linear relationship with soil particle size and soil moisture content but without significance (P>0.05). In summary, H. ammodendron plantating improves soil physical structure, increases soil fertility and accelerates the process of soil formation.
中文关键词	土壤微生物 ; 土壤理化性质 ; 沙地 ; 人工梭梭
英文关键词	soil microbes soil physical and chemical properties sandy land Haloxylon ammodendron plantation
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:5430281
来源机构	甘肃农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232425
作者单位	1.甘肃农业大学林学院, 甘肃民勤荒漠草地生态系统国家野外科学观测研究站, 兰州, 甘肃 730070, 中国; 2.甘肃民勤荒漠草地生态系统国家野外科学观测研究站, 甘肃民勤荒漠草地生态系统国家野外科学观测研究站, 民勤, 甘肃 733300, 中国
推荐引用方式 GB/T 7714	席军强,杨自辉,郭树江,等. 人工梭梭林对沙地土壤理化性质和微生物的影响[J]. 甘肃农业大学,2015,24(5):44-52.
APA	席军强,杨自辉,郭树江,王强强,张剑挥,&王多泽.(2015).人工梭梭林对沙地土壤理化性质和微生物的影响.草业学报,24(5),44-52.
MLA	席军强,et al."人工梭梭林对沙地土壤理化性质和微生物的影响".草业学报 24.5(2015):44-52.