干旱区生态环境知识资源中心(Arid): 民勤绿洲荒漠交错带不同土地覆被下土壤养分分布特征

Arid

	民勤绿洲荒漠交错带不同土地覆被下土壤养分分布特征
其他题名	Soil Nutrient Characteristics Under Land Covers in Minqin Oasis-Desert Ecotone
	孙朋; 巩杰; 王玉川; 谢余初
来源期刊	水土保持通报
ISSN	1000-288X
出版年	2013
卷号	33 期号:3 页码:53-57,164
中文摘要	以西北干旱区民勤绿洲荒漠交错带为例,选取民勤沙生植物园、东坝镇、苏武山等8个样带221个样点开展不同土地覆被类型下的土壤养分含量及土壤肥力综合评价研究。结果表明:(1)土壤有机质含量表现为绿洲区>绿洲荒漠过渡带>荒漠区的梯度变化;受人类活动影响和荒漠景观特征的影响,不同样带内土壤养分含量离散程度较大,变异系数为16.67%~410.68%,且土壤养分样带内变异程度基本呈现出沿荒漠绿洲荒漠交错带绿洲逐渐增加的趋势。(2)荒草地、灌木林地、乔木林地和裸地的土壤N,P,K含量主要受土壤质地和植被类型的影响而呈现出差异。(3)不同土地覆被下土壤肥力质量指数大小为草地(0.552)>灌木地(0.057)>乔木地(-0.642)>裸地(-0.677),草本和灌木具有良好的土壤培肥作用。
英文摘要	Minqin oasisdesert ecotone,located in the northwest arid area of China,was selected to conduct a comprehensive evaluation research on the differences of soil nutrients and soil fertility under different land cover types.8transects and 221sampling points were made,including Minqin desert botanic garden,Dongba township and Suwu Mountains.Results showed that:(1)Soil organic content varied in the order of oasis area> oasisdesert ecotone>desert.Discrete degree of soil nutrient content for different transects was large as the CVchanges from 16.67%to 410.68%,as affected by human activities and desert landscape characteristics. The variation of soil nutrient with different land cover types tended to increase from desert to desert oasis ecotone and then to oasis in the transects.(2)There were differences in the contents of soil N,P and K among grassland,shrub land,forestland and wasteland due to different human activities,soil types,soil textures and vegetation types.(3)Soil fertility quality index varied in the order of grassland(0.552)>shrub land(0.057)>forestland(-0.642)> bare land(-0.677),which shows that grass and shrub has a good improvement effect on soil fertility.
中文关键词	干旱区 ; 民勤县 ; 绿洲荒漠交错带 ; 土壤养分 ; 土壤肥力质量指数
英文关键词	arid area Minqin County oasisdesert ecotone soil nutrient soil fertility quality index
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:4885787
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230150
作者单位	兰州大学, 西部环境教育部重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	孙朋,巩杰,王玉川,等. 民勤绿洲荒漠交错带不同土地覆被下土壤养分分布特征[J]. 兰州大学,2013,33(3):53-57,164.
APA	孙朋,巩杰,王玉川,&谢余初.(2013).民勤绿洲荒漠交错带不同土地覆被下土壤养分分布特征.水土保持通报,33(3),53-57,164.
MLA	孙朋,et al."民勤绿洲荒漠交错带不同土地覆被下土壤养分分布特征".水土保持通报 33.3(2013):53-57,164.