干旱区生态环境知识资源中心(Arid): 宁夏东部荒漠草原向灌丛地人为转变过程中土壤胞外酶活性响应

Arid

	宁夏东部荒漠草原向灌丛地人为转变过程中土壤胞外酶活性响应
其他题名	Responses of soil extracellular enzyme activities to the anthropogenic transition from desert grassland to shrubland in eastern Ningxia,China
	郭天斗; 于露; 孙忠超; 马彦平; 赵亚楠; 梁丹妮; 李志丽; 王红梅
来源期刊	应用生态学报
ISSN	1001-9332
出版年	2020
卷号	31 期号:8 页码:2541-2548
中文摘要	以宁夏东部荒漠草原-灌丛地典型镶嵌体内部荒漠草地、草地边缘、灌丛边缘、灌丛地为对象,对各样地植丛和空斑下土壤特性及6种土壤胞外酶活性(纤维二糖水解酶、beta-1,4-木糖苷酶、beta-1,4葡萄糖苷酶、beta-1,4-乙酰基氨基葡萄糖苷酶、亮氨酸氨基肽酶和碱性磷酸酶)进行分析,研究荒漠草原向灌丛地人为转变过程中胞外酶的响应特征。结果表明:荒漠草原向灌丛地转变过程中,土壤水分、有机碳、全氮、全磷、微生物生物量碳、微生物生物量氮均显著降低,且灌丛地显著低于草地26.0% ~ 88.5%;除草地边缘土壤水分、有机碳空斑略高于植丛外,其他指标均表现为各样地植丛显著高于空斑3.9%~ 82.3%。6类土壤胞外酶活性在转变过程中均呈下降趋势,降幅为22.1%~82.4%,其中亮氨酸氨基肽酶和碱性磷酸酶降低最为显著,分别降低82.4%和75.5%;除灌丛地beta-1,4-乙酰基氨基葡萄糖苷酶在空斑显著高于植丛外,其他胞外酶活性均表现为各样地植丛高于空斑10.7%~ 42.7%;转变过程中6类胞外酶活性之间呈显著正相关,且均与土壤特性呈不同程度正相关,其中各类土壤胞外酶活性对土壤微生物生物量碳、氮及全氮响应较为积极。
英文摘要	To understand the responses of soil extracellular enzyme activities to the desert grasslandshrubland anthropogenic transition,we examined soil properties and six extracellular enzyme activities,in soil under vegetation patches and bare interspaces in desert grassland,grassland edge,shrubland edge,shrubland in a typical anthropogenic desert grassland-shrubland mosaic in desert steppe of eastern Ningxia,China.The six measured enzymes included cellobiohydrolase,beta-1,4-xylosidase,beta-1,4-glucosidase,beta-1,4-N-acetylglucosaminidase,leucine aminopeptidase and alkaline phosphatase.We found that soil moisture,soil organic carbon,total nitrogen,total phosphorus,microbial biomass carbon and microbial biomass nitrogen decreased significantly by 26.0%-88.5% with the process of the desert grassland-shrubland anthropogenic transition.All soil properties,except soil organic carbon and soil moisture in grassland edge site,were 3.9%-82.3% higher under vegetation patches than those in bare interspaces in each site.The six extracellular enzyme activities also decreased by 22.1%-82.4% in the transition process,especially for leucine aminopeptidase and alkaline phosphatase,showing significant decrease by 82.4% and 75.5%,respectively.All extracellular enzyme activities but beta-1,4-N-acetylglucosaminidase in shrubland were significantly higher by 10.7%-42.7% under vegetation patches than those in bare interspaces in each site.The activities of six extracellular enzymes were all positively correlated with each other.All of them were positively correlated with soil properties.Moreover,activities of these soil extracellular enzymes responded more positively to the changes of microbial biomass carbon,microbial biomass nitrogen,and total nitrogen in the process of anthropogenic transition.
中文关键词	荒漠草原 ; 灌丛引入 ; 草原-灌丛镶嵌体 ; 土壤特性 ; 土壤胞外酶活性
英文关键词	desert grassland shrub introduction grassland-shrubland mosaic soil property soil extracellular enzyme activity
类型	Article
语种	中文
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:6784095
来源机构	宁夏大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336787
作者单位	郭天斗, 宁夏大学农学院, 银川, 宁夏 750021, 中国.; 于露, 宁夏大学农学院, 银川, 宁夏 750021, 中国.; 孙忠超, 宁夏大学农学院, 银川, 宁夏 750021, 中国.; 马彦平, 宁夏大学农学院, 银川, 宁夏 750021, 中国.; 赵亚楠, 宁夏大学农学院, 银川, 宁夏 750021, 中国.; 梁丹妮, 宁夏大学农学院, 银川, 宁夏 750021, 中国.; 李志丽, 宁夏大学农学院, 银川, 宁夏 750021, 中国.; 王红梅, 宁夏大学农学院;;西北退化生态系统恢复与重建教育部重点实验室, ;;西北退化生态系统恢复与重建教育部重点实验室, 银川;;银川, ;; 750021;;750021.
推荐引用方式 GB/T 7714	郭天斗,于露,孙忠超,等. 宁夏东部荒漠草原向灌丛地人为转变过程中土壤胞外酶活性响应[J]. 宁夏大学,2020,31(8):2541-2548.
APA	郭天斗.,于露.,孙忠超.,马彦平.,赵亚楠.,...&王红梅.(2020).宁夏东部荒漠草原向灌丛地人为转变过程中土壤胞外酶活性响应.应用生态学报,31(8),2541-2548.
MLA	郭天斗,et al."宁夏东部荒漠草原向灌丛地人为转变过程中土壤胞外酶活性响应".应用生态学报 31.8(2020):2541-2548.