[1]张志伟,尹惠妍*,周尧治,等. 不同设置年限沙障对沙漠土壤理化性质的影响[J].西北林学院学报,2020,35(5):68-77.[doi:10.3969/j.issn.1001-7461.2020.05.11]
　ZHANG Zhi-wei,YIN Hui-yan*,ZHOU Yao-zhi,et al. Effects of Sand Barriers with Different Ages on Physicochemical Properties of Desert Soil[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2020,35(5):68-77.[doi:10.3969/j.issn.1001-7461.2020.05.11]
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 不同设置年限沙障对沙漠土壤理化性质的影响()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第35卷
期数:
2020年第5期
页码:
68-77
栏目:
出版日期:
2020-09-30

文章信息/Info

Title:
 Effects of Sand Barriers with Different Ages on Physicochemical Properties of Desert Soil
文章编号:
1001-7461(2020)05-0068-10
作者:
 张志伟; 尹惠妍*; 周尧治; 钱登峰
 （西藏农牧学院，西藏 林芝 860000）
Author(s):
 ZHANG Zhi-wei; YIN Hui-yan*; ZHOU Yao-zhi; QIAN Deng-feng
 （Tibet Agriculture & Animal Husbandry University,Linzhi,Tibet 860000,China）
关键词:
 ; 沙柳方格沙障; 土壤理化性质; 库布齐沙漠
Keywords:
 ; sand barrier;  soil physicochemical property;  Kumquat desert
分类号:
S714.2
DOI:
10.3969/j.issn.1001-7461.2020.05.11
文献标志码:
A
摘要:
 以库布齐沙漠穿沙公路中段的七里明沙区周围设置7 a与2 a的死沙柳枝沙障沙丘为对象，未设沙障的流动沙丘为对照，采用野外调查与室内试验的方法，研究分析不同设置年限沙柳沙障对沙漠土壤理化性质的影响。结果表明:1）3类沙丘土壤含水量、容重在不同土层、不同高度间存在不同程度的显著差异。随着设置沙障年限的增加，土壤含水量呈增加趋势，土壤容重呈减小趋势。2）不同沙丘碱解N含量，设置7 a沙柳沙障的沙丘含量明显>设置2 a沙柳沙障的沙丘与流动沙丘，且设置7 a沙柳沙障的沙丘不同部位均为0~5 cm土层含量为最高，与设置2 a的沙丘、流动沙丘差异明显；3类沙丘0~5 cm土层，各部位的速效K含量7 a的明显高于设置2 a的沙丘与流动沙丘，且设置7 a的沙丘各部位速效K含量随土层深度增加而降低，设置7 a的沙丘与设置2 a的沙丘的5~10 cm及10~15 cm土层速效K含量较接近。流动沙丘的有效P含量随土层深度增加呈现增加趋势，3类沙丘整体比较，随着设置沙障年限的增加，土壤中有效P含量呈降低趋势。有机质含量在不同土层间无明显变化规律，总体而言不同沙丘的有机质含量为设置7 a的>流动沙丘>设置2 a的。3）在设置2 a沙柳沙障后土壤化学性质才有所改善，随着设置沙障年限增加，改变表层土壤碱解N、速效K含量及空间分布，同时可以有效提高土壤有机质含量。4）3类沙丘土壤理化性质指标的33对相关关系中，有9对达到显著或极显著相关水平。设置沙障后土壤各理化性质指标具有较强的空间异质性，各指标间具有一定的空间自相关现象。
Abstract:
 In this paper,taking 7-and 2-year-old salix-fixed sand barriers located in the middle section of Kubuquat desert-crossing highway were used as the research objects,the effects of sand barriers with different ages on soil physicochemical properties were studied by using the methods of field investigation and indoor measurement.Drifting sand dunes were taken as the control.The results showed that 1) there were significant differences in soil water content and bulk density among the three types of sand dunes.With the increase of the age of sand barriers,the soil water content showed an increasing trend,and the soil bulk density showed a decreasing trend.2) The alkaline nitrogen (AN) content of 7-year-old sand barrier was significantly higher than those of 2-year-old sand barriers and drifting sandy dunes; in 0-5 cm soil layer of 7-year-old sand barrier,the AN content was the highest among other soil layers,and significantly different with 2-year-old sand barrier and drifting dunes.The available potassium (AK) content in 0-5 cm soil layer of 7-year-old sand barrier was significantly higher than those of 2year sand barrier and drifting dunes,and the AK content of 7-year-old sand barrier decreased with soil depth.The AK contents in the 10-15 cm soil layer was close to 5-10 cm soil layer in both 7-and 2-year-old sand barriers.The effective phosphorus (EP) content in three types of sand dunes increased with soil depth and decreased with sand barrier age.No significant regularities were observed for the soil organic matter,and generally speaking,the contents of soil organic matter were in the order of 7-year-old sand barrier>drifting dune>2-year-old sand barrier.3) The soil chemical properties were improved when the sand barriers were set up 2 years later.With the increase of sand barrier age,the AN,AK contents and spatial distribution of the surface soil changed,the soil organic matter content effectively increased.4) Among 42 pairs of the indices of soil physicochemical properties of the soils of three types of dunes,13 pairs reached significantly or extremely significantly correlative levels.After the sand barriers were set up,the physicochemical properties of the soil exhibited strong spatial heterogeneity,and there existed certain spatial autocorrelation among the indicators.

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备注/Memo

备注/Memo:
 收稿日期：2019-04-23修回日期：2020-04-26
基金项目：西藏自治区自然科学基金（XZ 2019 ZR G-61)；国家重点研发计划（2017YFC0506801）;林学卓越农林人才教育培养计划改革试点项目。
作者简介：张志伟。研究方向：水土保持及荒漠区划。E-mail：aiwoweige@163.com
*通信作者：尹惠妍。研究方向：高寒地区造林技术。E-mail:huiyanyin@163.com
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