LI Xiaojia,JIANG Hongtao,ZHOU Ruiping,et al.Effect of Layout Way of Sand Barrier on Sandy Soil Physicochemical Properties[J].Research of Soil and Water Conservation,2020,27(05):50-58.
腾格里沙漠东缘沙障布设方式对土壤理化性质的影响
- Title:
- Effect of Layout Way of Sand Barrier on Sandy Soil Physicochemical Properties
- 文章编号:
- 1005-3409(2020)05-0050-09
- Keywords:
- sand barrier; layout way; soil quality index; soil properties; Tengger Desert
- 分类号:
- X171.4
- 文献标志码:
- A
- 摘要:
- 为探索沙障布设方式对土壤性质的影响,通过野外调查与室内分析对比垂直和平铺方式布设的4种沙障材料(树枝、棉花秸秆、玉米秸秆和尼龙网)对土壤性质的影响,运用土壤质量指数评价了沙障对土壤质量的影响。结果表明:(1)沙障区土壤有效氮、有效磷、有效钾、pH值与对照具有极显著差异(p<0.01),土壤容重与对照具有显著差异(p<0.05),土壤容重和土壤有效氮是监测土壤质量改善的重要指标;(2)沙障区(铺设了44个月)土壤表层0—60 cm的土壤质量平均提高了17.990%,其中棉花杆平铺方格沙障对0—60 cm土壤质量的改善效果最好(提高了30.752%);(3)沙障的平铺布设对土壤质量的改善效果比垂直布设好,特别是在0—40 cm土层,沙障平铺布设区土壤质量提高了18.437%,垂直布设区提高了6.725%。因此沙区沙障的布设对土壤性质的改善与土壤质量的恢复具有重要影响。
- Abstract:
- The field survey and indoor analysis were carried out to explore the effect of layout way of and barrier on sand soil properties. Four kinds of sand barrier materials(branch, cotton straw, corn straw and nylon net)were laid vertically and horizontally. The effects of sand barrier on soil properties were analyzed and soil quality were evaluated by soil quality index. The results show that:(1)there were highly significant differences between available nitrogen, available phosphorus, available potassium, pH in the sand barrier areas and those in the control area(p<0.01), significant difference between soil bulk density in the sand barrier areas and that in the control area(p<0.05); soil bulk density and soil available nitrogen are important indicators for monitoring soil quality improvement;(2)the soil quality in the 0—60 cm topsoil in the sand barrier area which has been laid for 44 months, increased by 17.990% on average, and the improvement effect of flat cotton straw checkerboard barriers on the soil quality is the best in the 0—60 cm topsoil which increased by 30.752%;(3)the improvement effect of soil quality in flat layout of sand barriers is more effective than that in vertical layout, especially in the 0—40 cm soil layer where the soil quality increased by 18.437% in the flat layout area of sand barriers, and increased by 6.725% in the vertical layout area. Therefore, the layout of sand barrier in the sand area has an important impact on the improvement of soil properties and the restoration of soil quality.
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备注/Memo
收稿日期:2019-10-29修回日期:2019-12-03
资助项目:国家重点研发计划课题(2016YFC0501003); 内蒙古自然科学基金(2018MS04009); 内蒙古自治区科技重大专项课题子项目(zdzx2018058); 内蒙古自治区高等学校科学研究项目(NJZY20019)
第一作者:李晓佳(1981—),女,吉林省扶余县人,博士,讲师,主要从事土地生态方面的研究。E-mail:550215021@qq.com
通信作者:姜洪涛(1983—),男(蒙族),内蒙古通辽市人,博士,讲师,主要从事土壤侵蚀研究。E-mail:jianghongtao2003@126.com