摘要
以新疆喀什市典型的物理结皮、生物结皮和盐结皮土壤为例,在不同结皮覆盖的区域采集不同深度的土壤样品,分析其土壤水分、盐分、有机质和有效氮的含量。结果表明,有结皮覆盖的土壤表层(0~20 cm)含水量均高于没有结皮覆盖下的土壤表层(0~20 cm)含水量,且含水量表现为生物结皮>盐结皮>物理结皮。结皮覆盖下的土壤总盐含量均低于无结皮覆盖的土壤;随着土壤深度的增加,物理结皮覆盖及盐结皮覆盖下的土壤总盐含量均下降,生物结皮覆盖下的土壤总盐含量增加。物理结皮及生物结皮覆盖下的土壤有机质及有效氮含量均随土壤深度增加而下降,且二者的土壤有机质及有效氮含量均大于无结皮覆盖;盐结皮覆盖的土壤有机质及有效氮含量随着土壤深度的增加而增加,且均大于无结皮覆盖土壤。
Taking typical physical crust soil,biological crust soil and salt crust soil in Kashgar City,Xinjiang as an example,soil samples at different depths were collected from areas covered by different crusts,and the contents of soil moisture,salt,organic matter and available nitrogen were analyzed.The results showed that the moisture content of the soil surface(0~20 cm)covered by the crust was higher than that of the soil layer(0~20 cm)without the crust covering,and the order of the soil moisture content was biological crust>salt crust>physical crust.The total salt content of soil covered by the crust was lower than that of soil without the crust covering.With the increase of soil depth,the total soil salt content of the soil covered by the physical crust and the salt crust decreased,and the total soil salt content of the soil covered by the biological crust increased.The contents of soil organic matter and available nitrogen under the mulch of physical crust and biological crust decreased with the increase of soil depth,and the contents of soil organic matter and available nitrogen of the two were higher than those of soil without crust covering;the content of soil organic matter and available nitrogen in the salt crust covered soil increased with the increase of soil depth,and both were greater than those of the noncrust covered soil.
作者
莫治新
查向浩
韦良焕
MO Zhi-xin;ZHA Xiang-hao;WEI Liang-huan(College of Chemistry and Environmental Sciences/Xinjiang Engineering Technology Research Center of Biological Solid Waste Recycling,Kashi Unversity,Kashgar 844006,Xinjiang,China)
出处
《湖北农业科学》
2022年第19期30-33,共4页
Hubei Agricultural Sciences
基金
新疆维吾尔自治区自然基金项目(2017D01A12)。
