干旱区生态环境知识资源中心(Arid): 川西北草原退化沙化土壤剖面特征分析

Arid

	川西北草原退化沙化土壤剖面特征分析
其他题名	Soil Profile Characteristics During Grassland Degeneration and Desertification in the Northwest of Sichuan Province
	王艳 1; 杨剑虹 2; 潘洁 1; 李哲 3
ISSN	1000-288X
出版年	2009
卷号	29 期号:1 页码:92-95
中文摘要	对川西北草原不同退化程度土壤的剖面特征和理化性质进行了研究.结果表明,随着退化程度的加大,土壤剖面的草甸层变薄,植被覆盖度降低,优良牧草种类和数量逐渐减少.土壤有机质和腐殖酸呈下降趋势,土壤的富胡比呈上升趋势.在土壤养分变化中,土壤的全氮、碱解氮、全磷、有效磷、有效钾含量均呈下降趋势,各土壤养分含量在剖面上的分布次序为:表层>亚表层>底层.全钾含量略呈上升趋势,但整体变化不大.土壤的pH值也略呈上升趋势,表层土壤pH值小于亚表层.
英文摘要	The paper focused on the soil profile characteristics and soil physico-chemical properties of different degradation grades in the northwest of Sichuan Province. Results showed that the meadow layer of soil profile became smaller, vegetation coverage was declined, and good pasturage was gradually decreased in variety and quantity with increased steppe degradation grades. The contents of organic matter and humic acid showed a downtrend and meanwhile, FA/HA increased gradually. Among soil nutrient substances, the contents of total nitrogen, available nitrogen, total phosphorus, available phosphorus, and available potassium showed a declined tendency. The content of total potassium showed a slight uptrend, but the change was not obvious. Soil pH value also showed a slight uptrend and the pH value of surface layer was less than the value of subsurface layer.
中文关键词	草原退化 ; 土壤 ; 剖面特征
英文关键词	grassland degradation soil profile characteristic
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:3562282
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/224157
作者单位	1.天津市农业资源与环境研究所, 天津 300192, 中国; 2.西南大学, 重庆 400716, 中国; 3.天津市公路工程总公司, 天津 300250, 中国
推荐引用方式 GB/T 7714	王艳,杨剑虹,潘洁,等. 川西北草原退化沙化土壤剖面特征分析[J],2009,29(1):92-95.
APA	王艳,杨剑虹,潘洁,&李哲.(2009).川西北草原退化沙化土壤剖面特征分析.,29(1),92-95.
MLA	王艳,et al."川西北草原退化沙化土壤剖面特征分析".29.1(2009):92-95.