干旱区生态环境知识资源中心(Arid): 毛乌素沙地南缘改良与利用风沙土性质研究

Arid

	毛乌素沙地南缘改良与利用风沙土性质研究
其他题名	Studies on Soil Properties of Aeolian Sandy Land improvement and Utilization in South Edge of Musu Desert
	王志 1; 彭茹燕 2; 王蕾 1; 刘连友 1
ISSN	1009-2242
出版年	2006
卷号	20 期号:2 页码:14-16,21
中文摘要	对毛乌素沙地南缘半流动沙地、新垫土改良地和改良4年的麻黄地土壤理化性质的研究结果表明：垫土对沙地土壤有明显的改良作用，细粒物质增加，持水能力提高，0～20cm平均粒径由0．24～0．28mm降到0．14～0．18mm。土壤中有机质平均含量为0．107％、全氮为0．0113％，速效氮为11．522mg／kg，分别是半流动沙地的1．67．1．67，2．75倍。改良后通过4年种植的麻黄地土壤得到进一步发育，20～40cm层粉沙含量占到10．38％～18．38％，是新改良地的7．98～14．94倍。有机质平均含量为0．208％，全氮为0．0183％．速效氮为17．658mg／kg，分别是半流动沙地的3．25，2．71．4．21倍，且有机质和全氮含量在30～40cm深处出现峰值。
英文摘要	The soil bulk density, mechanical composition, water content, the contain of organic matter, the total nitrogen and rapid available nitrogen variations of sandy soil before and after improvement by covering land surface with loess for 15～ 20 cm depth and utilization by planting Ephedra sinica for 4 years in the south edge of the Musu desert were analyzed. Some resuhs are as follows： the water-holding capacity and soil nutrient were on the increase after land improvement. In the layer of 0～20 cm, the bulk density decreased from 0. 254～0. 273 g/cm^3 to 0.15～0. 163 g/cm^3 and the average grain size decreased from 0. 24～0.28 mm to 0.14～0. 18 cm. The water content became higher in the upper layer than in the lower layer. And after the utilization the silt content increased to 7.98～14.94 times. The ratio of the organic matter in the 3 sample plots was 1 ～ 1. 67 ： 3.25～ the ratio of the total nitrogen was 1 ： 1.67 ～ 2.71; the ratio of the rapid available nitrogen was 1 ： 2.75 z 4.,21. On Ephedra sinica sample plot there appeared a peak value of the organic matter and the total nitrogen in the 30～40 cm layer where the root of Ephedra sinica was mainly distributed. The quality of sandy soil has gradually increased with the improvement and the utilization.
中文关键词	毛乌素沙地 ; 改良 ; 利用 ; 土壤理化性质
英文关键词	Musu desert improvement utilization physical and chemical properties of soil
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:2326442
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/220140
作者单位	1.北京师范大学, 环境演变与自然灾害教育部重点实验室, 北京 100875, 中国; 2.国土资源部土地整理中心, 北京 100035, 中国
推荐引用方式 GB/T 7714	王志,彭茹燕,王蕾,等. 毛乌素沙地南缘改良与利用风沙土性质研究[J]. 北京师范大学,2006,20(2):14-16,21.
APA	王志,彭茹燕,王蕾,&刘连友.(2006).毛乌素沙地南缘改良与利用风沙土性质研究.,20(2),14-16,21.
MLA	王志,et al."毛乌素沙地南缘改良与利用风沙土性质研究".20.2(2006):14-16,21.