干旱区生态环境知识资源中心(Arid): 民勤绿洲不同年限退耕地土壤养分变化及其相关性分析

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	民勤绿洲不同年限退耕地土壤养分变化及其相关性分析
其他题名	Woodland soil nutrient changes and correlation analysis of different fixed numbers of abandoned lands in Minqin oasis
	王方琳 1; 魏小红 2; 王理德 3; 柴成武 3; 韩富贵 3; 张莹花 3; 魏林源 3; 郭春秀 3
来源期刊	干旱地区农业研究
ISSN	1000-7601
出版年	2016
卷号	34 期号:2 页码:119-124
中文摘要	以石羊河下游的典型区民勤退耕地为研究对象,对石羊河下游地区不同恢复年限退耕地土壤养分变化情况及其养分与退耕时间之间相关性进行分析,结果表明:① 土壤中N肥含量随退耕年限的增加呈波动式上升趋势,但在同一年限退耕地中随土层的加深而逐渐减小,退耕后1 ~ 10 a,N含量变化的幅度较小; 15 ~ 30 a,N含量变化的幅度相对较大; 50 a后,趋于稳定; P含量在各个演替阶段土壤层次上均呈A(0 ~ 10 cm) > B(10 ~ 20 cm) > C(20 ~ 30 cm) > D(30 ~ 40 cm)规律性分布,退耕后1 ~ 10 a,A、B两层P含量的差异较大,C、D两层受退耕时间的影响较小; 15 ~ 50 a间,A、B、C、D四个土层P含量变化的幅度相对较小; K的含量表现出和P同样的规律性; 有机质含量在退耕后1 ~ 7 a间变化幅度较大,10 ~ 50 a间变化幅度较小。1 ~ 5 a间,A、B、C、D四层含量变化呈逐层递减的趋势; 7 ~ 50 a间, A层变化较大,B、C、D三层趋于稳定。② 养分与退耕年限相关性分析表明:退耕1 a,速效磷、有机质含量与退耕时间呈显著负相关; 5 ~ 10 a间,各养分与退耕时间均呈显著正相关且差异不显著; 15 ~ 20 a间,各养分与退耕时间之间存在显著差异,30 ~ 50 a间,速效钾、速效磷、有机质含量与退耕时间差异不显著,50 a时差异显著。
英文摘要	The typical region of Shiyang River in Minqin cultivated land was selected to analyze different restorations of soil distribution,changes of soil nutrient and community structure of recovery process in vegetation land of Shiyang River,and their correlations were also investigated. The results showed that N fertilizer had a fluctuant trend to become increased in farmland soil. However,during the same period,it was gradually decreased with the increase of soil depth. 1 ~10 a after abandonment,N level showed small variations,whereas 15 ~ 30 a after abandonment,the variations became large. It went stabilized after 50 a. Additionally,levels of P content in soil depths followed the order as the follow: A (0 ~ 10 cm) > B(10 ~ 20 cm) > C(20 ~ 30 cm) > D(30 ~ 40 cm). 1 ~ 10 a after abandonment,P level difference between A and B layers varied largely. However,it in C and D layers were affected subtly by the time of abandonment. During 15 ~ 50 a,P levels in A,B,C and D layers showed small variations. K level exhibited similar variation trends as P level. Organic matter content varied largely during 1 ~ 7 a after abandonment,whereas it varied little during 10 ~ 50 a. During 1 ~ 5 a,it became decreased with the increase of soil depths in A,B,C and D layers. During 7 ~ 50 a,it resulted in large change in A layer,while it reached stabilization in B,C and D layers. In addition,the correlation analysis about nutrients showed that the 1a after abandonment,contents of available phosphorous and organic matters were significantly negatively correlated with the time. During 5 ~ 10 a,all nutrients were positively correlated with the time at an insignificant level. Between 15 ~ 20 a,significant differences were found between all nutrients and the time. During 30 ~ 50 a,available potassium,available phosphorous,and contents of organic matters did not have a significant deviation from the time,while in 50 a,they did.
中文关键词	退耕地 ; 土壤养分 ; 相关性 ; 石羊河下游
英文关键词	abandoned crop land soil nutrition correlation the lower reaches of Shiyang River
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:5670937
来源机构	甘肃农业大学 ; 甘肃省治沙研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/234189
作者单位	1.甘肃农业大学生命科学技术学院, 甘肃省荒漠化防治与风沙灾害国家重点试验室, 兰州, 甘肃 730070, 中国; 2.甘肃农业大学生命科学技术学院, 兰州, 甘肃 730070, 中国; 3.甘肃省治沙研究所, 甘肃省荒漠化防治与风沙灾害国家重点试验室, 武威, 甘肃 733000, 中国
推荐引用方式 GB/T 7714	王方琳,魏小红,王理德,等. 民勤绿洲不同年限退耕地土壤养分变化及其相关性分析[J]. 甘肃农业大学, 甘肃省治沙研究所,2016,34(2):119-124.
APA	王方琳.,魏小红.,王理德.,柴成武.,韩富贵.,...&郭春秀.(2016).民勤绿洲不同年限退耕地土壤养分变化及其相关性分析.干旱地区农业研究,34(2),119-124.
MLA	王方琳,et al."民勤绿洲不同年限退耕地土壤养分变化及其相关性分析".干旱地区农业研究 34.2(2016):119-124.