| 荒漠区食细菌线虫对生物土壤结皮下土壤酶活性的影响 |
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| 引用本文： | 刘艳梅,杨航宇,刘凤莲,王俊俊,王莉红,张亭亭.荒漠区食细菌线虫对生物土壤结皮下土壤酶活性的影响[J].中国沙漠,2022,42(2):77-84. |
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| 作者姓名： | 刘艳梅 杨航宇 刘凤莲 王俊俊 王莉红 张亭亭 |
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| 作者单位： | 1.天水师范学院 生物工程与技术学院，甘肃 天水 741001;2.中国科学院西北生态环境资源研究院 沙坡头沙漠试验研究站，甘肃 兰州 730000;3.甘肃林业职业技术学院，甘肃 天水 741020 |
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| 基金项目： | 甘肃省科技计划项目（21JR7RE177）；;国家自然科学基金项目（41761057）； |
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| 摘 要： | 作为土壤的重要生物组分,食细菌线虫影响土壤的能量流动和物质循环,但它在荒漠生态系统的作用仍不清楚.为探明土壤食细菌线虫对荒漠区土壤的影响,以腾格里沙漠东南缘人工植被固沙区生物土壤结皮覆盖的沙丘土壤为研究对象,分别采集藻-地衣和藓类结皮及结皮下0-10cm土样,按每克土壤10、30、60、90、120、150条的密度接种...
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| 关 键 词： | 土壤食细菌线虫 生物土壤结皮 土壤酶 结皮类型 |
| 收稿时间： | 2020-08-03 |
| 修稿时间： | 2021-08-16 |
Effects of soil bacterial-feeding nematodes on soil enzyme activity under biocrusts in desert areas |
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| Yanmei Liu,Hangyu Yang,Fenglian Liu,Junjun Wang,Lihong Wang,Tingting Zhang.Effects of soil bacterial-feeding nematodes on soil enzyme activity under biocrusts in desert areas[J].Journal of Desert Research,2022,42(2):77-84. |
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| Authors: | Yanmei Liu Hangyu Yang Fenglian Liu Junjun Wang Lihong Wang Tingting Zhang |
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| Institution: | 1.College of Biological Engineering and Technology，Tianshui Normal University，Tianshui 741001，Gansu，China;2.Shapotou Desert Research and Experiment Station，Northwest Institute of Eco-Environment and Resources，Chinese Academy of Sciences，Lanzhou 730000，China;3.Gansu Forestry Technological College，Tianshui 741020，Gansu，China |
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| Abstract: | Soil bacterial-feeding nematodes act as important biological components in soil， which affect soil energy flow and material circulation. However， little was known on the function of soil bacterial-feeding nematodes in desert ecosystems. Sand dune soil under biocrusts in the artificial vegetation areas at the southeast edge of Tengger desert was studied to explore the effects of soil bacteria-feeding nematodes on soil in desert areas. Soil samples of 0-10 cm with cyanobacteria-lichen and moss crusts were collected， and inoculated bacterial-feeding nematodes following the density of 10， 30， 60， 90， 120 and 150 individuals in per gram of soil， respectively. Soils with no bacterial-feeding nematodes were as contrasts. The activities of soil urease， sucrase， dehydrogenase and alkaline phosphatase were examined to make sure the effects of bacterial-feeding nematodes on soil quality in desert areas. The results showed that soil bacterial-feeding nematodes increased the activities of soil urease， invertase， dehydrogenase and alkaline phosphatase under biocrusts， and soil enzyme activities increased first and then decreased with increasing the density of soil bacterial-feeding nematodes. The results indicated a mutually beneficial symbiosis between soil bacterial-feeding nematodes and microorganisms. In addition， crust types also significantly affected four studied enzyme activities following the inoculation of soil bacterial-feeding nematodes into soil. Moss crusts has significantly higher soil enzyme activities than that of cyanobacteria-lichen crusts （P<0.05）， indicating that the development of crusts is beneficial to the mutual growth mode between bacterial-feeding nematodes and microorganisms. Therefore， soil bacterial-feeding nematodes could increase soil enzyme activities beneath biocrusts in the artificial vegetation area of the Tengger Desert， indicating that soil bacterial-feeding nematodes could promote the process of soil restoration in desert areas and they are beneficial to the improvement of desert ecosystems. |
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| Keywords: | soil bacterial-feeding nematodes biocrusts soil enzyme activities crust types |
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