[1]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].西北林学院学报,2019,34(4):36-42.[doi:10.3969/j.issn.1001-7461.2019.04.05]
　LIU Jiang,ZHANG Li-xin*,XU Xian-ying. Soil Physicochemical Properties of Artificial Haloxylon ammodendron Forest with Different Degradation Degrees[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2019,34(4):36-42.[doi:10.3969/j.issn.1001-7461.2019.04.05]
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 不同退化程度的人工梭梭林地土壤理化特征()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第34卷
期数:
2019年第4期
页码:
36-42
栏目:
出版日期:
2019-07-31

文章信息/Info

Title:
 Soil Physicochemical Properties of Artificial Haloxylon ammodendron Forest with Different Degradation Degrees
文章编号:
1001-7461(2019)04-0036-07
作者:
 刘江1; 2; 张立欣1; 2*; 徐先英3
 （1.亿利资源集团有限公司，内蒙古 鄂尔多斯 017400；2.内蒙古库布其沙漠技术研究院，内蒙古 鄂尔多斯 017400；3.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，甘肃 兰州 730070）
Author(s):
 LIU Jiang1; 2; ZHANG Li-xin1; 2*; XU Xian-ying3
 （1.Elion Resources Group Co.Ltd.，Ordos 017400,Inner Mongolia,China；2.Inner Mongolia Hobq Desert Technology Institute，Ordos 017400,Inner Mongolia,China；3.State Key Laboratory Breeding Base of Desertification and Aeolian Sand Disaster Combating，Gansu Desert Control Research Institute，Lanzhou 730070,Gansu,China）
关键词:
 ; 梭梭; 人工林退化; 森林土壤
Keywords:
Haloxylon ammodendron;  degradation of artificial forest;  forest soil
分类号:
S714.2
DOI:
10.3969/j.issn.1001-7461.2019.04.05
文献标志码:
A
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Ca2+为主，阴离子以SO2-4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+、Ca2+、Mg2+、Cl-、SO2-4、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。
Abstract:
 In order to research the impact of degradation of artificial Haloxylon ammodendron forest 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.ammodendron forest,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) SO2-4 was the main anions,Na+ and Ca2+ 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+,Ca2+,Mg2+,Cl-,SO2-4,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.ammodendron forest.

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备注/Memo

备注/Memo:
 收稿日期：2018-09-29修回日期：2019-02-28
基金项目：国家重点研发计划（2017YFC0504506）；国家重点研发计划（2016YFE0203400)；国家重点基础研究发展计划（2012CB723203）。
作者简介：刘江，男，硕士，研究方向：荒漠化防治。E-mail:liujs1015@126.com
*通信作者：张立欣，男，硕士，研究方向：植被恢复重建技术。E-mail:ZLX-19872002@163.com
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