干旱区生态环境知识资源中心(Arid): 不同载畜率对荒漠草原三种土壤酶活性的影响

Arid

	不同载畜率对荒漠草原三种土壤酶活性的影响
其他题名	Effects of Different Stocking Rates on Three Kinds of Soil Enzyme Activitives in Desert Steppe
	朱琳; 闫宝龙; 韩国栋; 王忠武; 任海燕; 张昊
来源期刊	中国草地学报
ISSN	1673-5021
出版年	2019
卷号	41 期号:3 页码:67-73
中文摘要	以内蒙古短花针茅荒漠草原为对象,对不同载畜率下(轻度放牧、中度放牧、重度放牧)三种土壤酶(脱氢酶、脲酶、碱性磷酸酶)活性进行分析,并探讨植物群落生物量以及土壤pH值、有机质、全氮、全磷含量等环境因子与土壤酶的相互作用。结果表明,三种土壤酶活性随载畜率增加呈降低趋势,脱氢酶活性在禁牧区(197.51mugTPF/g·h)最高,脲酶活性在轻度放牧区(40.64mgNH_4~+-N/g·h)和重度放牧区(40.78mgNH_4~+-N/g·h)最高,磷酸酶活性在轻度放牧区(53.93mugphenol/g·h)最高;脱氢酶和脲酶活性在中度和重度放牧区不同土层内有显著差异(P<0.05),0~10cm土层酶活性高于10~20cm土层;不同载畜率下磷酸酶活性0~10cm土层高于10~20cm;三种酶之间相关性较低,但三种酶皆与环境因子有着密切联系。
英文摘要	In order to reveal the changes of soil enzyme activities in desert steppe under different stocking rates,the Stipa breviflora desert steppe in Inner Mongolia was the subject of this experiment.The activities of three soil enzymes (Dehydrogenase,urease and alkaline phosphatase) were analyzed under three different stocking rates (Light grazing,moderate grazing,heavy grazing),and the interaction between plant communities’ aboveground and underground biomass,soil pH,soil organic matter (SOM),total nitrogen (TN),total phosphorus (TP) and other environmental factors and soil enzymes were investigated.The results showed that the activity of three soil enzymes decreased with the increase of stocking rate.The dehydrogenase activity was the highest in CK (197.51mugTPF/g·h),the urease activity was the highest both in LG (40.64mgNH_4~+-N/g·h) and HG (40.78mgNH_4~+-N/g·h),the phosphatase activity was the highest in LG (53.93mugphenol/g·h).The activities of dehydrogenase and urease were significant difference in different soil layers in MG and HG (P<0.05),and the enzyme activities in 0~10cm soil layer was higher than those in 10~20cm soil layer.The activity of phosphatase in 0~10cm was higher than that in 10~20cm soil layer under different stocking rates.There was a low correlation between the three enzymes,but the three enzymes were closely related to environmental factors.Appropriate grazing can not only improve the enzymatic ability of various soil enzymes,but also curb the grassland decline.
中文关键词	荒漠草原 ; 载畜率 ; 脱氢酶 ; 脲酶 ; 碱性磷酸酶
英文关键词	Desert steppe Stocking rates Dehydrogenase Urease Alkaline phosphatase
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:6511154
来源机构	内蒙古农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/239724
作者单位	内蒙古农业大学草原与资源环境学院, 草地资源教育部重点实验室, 呼和浩特, 内蒙古 010011, 中国
推荐引用方式 GB/T 7714	朱琳,闫宝龙,韩国栋,等. 不同载畜率对荒漠草原三种土壤酶活性的影响[J]. 内蒙古农业大学,2019,41(3):67-73.
APA	朱琳,闫宝龙,韩国栋,王忠武,任海燕,&张昊.(2019).不同载畜率对荒漠草原三种土壤酶活性的影响.中国草地学报,41(3),67-73.
MLA	朱琳,et al."不同载畜率对荒漠草原三种土壤酶活性的影响".中国草地学报 41.3(2019):67-73.