生物有机肥施加对荒漠草原植被-土壤-微生物的影响OA北大核心CSTPCD
The effect of microbial organic fertilizers application on vegetation-soil-microbe in desert steppe
添加高效纤维素分解菌于农牧业有机冗余物中,通过有氧发酵制备出具有一定保水性、透气性和肥力的生物有机肥(MOF).在乌拉特荒漠草原试验区进行MOF施加相关试验,施加量为1 kg·m-2.结果表明,MOF的施加可以通过促进植被生长、改良土壤理化性质以及增加微生物数量等方式对退化荒漠草原植被-土壤-微生物系统起到快速恢复作用.其中,植被盖度增加了33%;土壤黏粉粒含量增加了2%,土壤全碳含量增加了9%,土壤全氮含量增加了0.9%;土壤细菌中11个门类数量变化差异显著,土壤真菌中1个门类数量变化差异显著;植被盖度增加的92%可由MOF的施加和土壤含水率共同解释,物种丰富度增加的84%可由MOF施加、土壤含水率和土壤电导率共同解释.试验结果为施加生物有机肥在干旱区荒漠草原产生的恢复作用提供了理论依据、数据支持以及技术支撑.
Microbial organic fertilizers(MOF)provide water retention,air permeability and fertility and are prepared from agriculture and animal husbandry waste through aerobic fermentation by high efficiency cellulose decomposer bacteria.An experimental 1 kg·m-2 application of MOF experiment in the Urat desert steppe showed that applying MOF quickly restored the vegetation-soil-microbial system in degraded desert steppe through promoting vegetation growth,improving soil physical and chemical properties,increasing quantities of microbes and other similar effects.In this experiment it vegetation cover was significantly increased by 33%,soil sticky clay content was significantly increased by 2%,soil total carbon content was significantly increased by 9%,soil total nitrogen content was significantly increased 0.9%;And 11 phyla of soil bacteria and 1 phyla of soil fungi had significant differences in occurrence.Analytically,92%of the increase in vegetation cover was explained by the MOF application and soil moisture content;84%of the increase in species richness was explained by the effects of MOF application,soil moisture content and soil electrical conductivity.Overall,these results provide evidence of efficacy,data support and technical support for the restoration of arid desert steppe through application of microbial organic fertilizers.
李俊瑶;蒋星驰;胡晋瑜;魏栋光;赵学勇;王少昆
中国科学院西北生态环境资源研究院,甘肃 兰州 730000||中国科学院大学资源与环境学院,北京 101408中国科学院西北生态环境资源研究院,甘肃 兰州 730000||中国科学院大学生命科学学院,北京 101408国营榆林市横山区二石磕林场,陕西 榆林 719109巴彦淖尔市林业和草原资源保护中心,内蒙古 巴彦淖尔 015015中国科学院西北生态环境资源研究院,甘肃 兰州 730000
生物有机肥荒漠草原植被特征土壤微生物
microbial organic fertilizersdesert steppevegetation characteristicssoil microbes
《草业学报》 2024 (003)
34-45 / 12
国家自然科学基金项目(42071140)和内蒙古乌拉特梭梭林自然保护区长期生态监测与评估项目(E2900510)资助.
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