干旱区生态环境知识资源中心(Arid): 不同退化程度的人工梭梭林地土壤理化特征

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	不同退化程度的人工梭梭林地土壤理化特征
其他题名	Soil Physicochemical Properties of Artificial Haloxylon ammodendron Forest with Different Degradation Degrees
	刘江 1; 张立欣 1; 徐先英 2
来源期刊	西北林学院学报
ISSN	1001-7461
出版年	2019
卷号	34 期号:4 页码:36-42,144
中文摘要	采用聚类分析法将民勤荒漠绿洲过渡带12个人工梭梭林样点划分为4个退化程度,以空间代替时间,研究了人工梭梭林退化对土壤理化性质的影响。结果表明:1)随着人工梭梭林的退化,梭梭枯枝率显著增大,梭梭活株比例、新稍长与长势显著降低。2)各土层中阳离子以Na~+与Ca~(2+)为主,阴离子以SO_4~(2-)为主,各养分含量总体上随土层深度增加而逐渐降低。除容重外,土壤各物理指标间均存在显著相关性,土壤各化学指标间以及各化学指标与物理指标间的相关性普遍不显著。3)随着人工梭梭林的退化,土壤机械组成、含水率、全盐含量、Na~+、Ca~(2+)、Mg~(2+)、Cl~-、 SO_4~(2-) 、速效N、速效P、全P和阳离子代换量在3个土层间均无显著差异,pH值、有机质和全N含量在各土层间的差异由显著变为不显著,K+与NO- 3含量在各土层间的差异由不显著变为显著。随着人工梭梭林退化程度的加剧,土壤有机质和速效P含量显著减小,表明有机质和速效P含量的降低是人工梭梭林退化的原因之一。
英文摘要	In order to research the impact of degradation of artificial Haloxylon ammodendronforest on soil physicochemical properties in Minqin Oasis-desert Ecotone,Gansu,12 degraded plots were divided into four degradation grades by hierarchical cluster analysis,and the method of substituting time sere with the spatial sere was used at the same time.The results were as follows:1)with the aggravation of degradation of artificial H.ammodendronforest,the rate of dead branches remarkably increased,shoot length obviously shortened,growth power got distinctly poor,dead plants of H.ammodendron began to appear in severe degradation.2)SO_4~(2-) was the main anions,Na~+and Ca~(2+) were the main cations in the soil,various nutrient contents as a whole decreased with the increase of soil depth.There were strong correlation among all soil physical indicators besides bulk density,the correlation among chemical indicators and the correlation between physical indicators and chemical indicators were universally insignificant.3)Significant difference of soil mechanical composition,moisture content,total salt content,Na~+,Ca~(2+),Mg~(2+),Cl~-,SO_4~(2-),available N, available P,total P and cation exchange capacity among 3 soil layers were not observed,significant difference of soil organic matter,pH and total N among soil layers became insignificant,insignificant difference of K~+ and NO_3~- among soil layers became significant.The content of soil organic matter and available P obviously decreased with the aggravation of degradation,which indicated the decrease of content of organic matter and available P was one of the reasons of degradation of artificial H.ammodendronforest.
中文关键词	梭梭 ; 人工林退化 ; 森林土壤
英文关键词	Haloxylon ammodendron degradation of artificial forest forest soil
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:6537345
来源机构	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/2XILL650/239606
作者单位	1.亿利资源集团有限公司;;内蒙古库布其沙漠技术研究院, ;;, 鄂尔多斯;;鄂尔多斯, 内蒙古;;内蒙古 017400;;017400, 中国; 2.甘肃省治沙研究所, 荒漠化与风沙灾害防治国家重点实验室培育基地, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	刘江,张立欣,徐先英. 不同退化程度的人工梭梭林地土壤理化特征[J]. 甘肃省治沙研究所,2019,34(4):36-42,144.
APA	刘江,张立欣,&徐先英.(2019).不同退化程度的人工梭梭林地土壤理化特征.西北林学院学报,34(4),36-42,144.
MLA	刘江,et al."不同退化程度的人工梭梭林地土壤理化特征".西北林学院学报 34.4(2019):36-42,144.