干旱区生态环境知识资源中心(Arid): 草原化荒漠区中间锦鸡儿灌丛土壤线虫群落

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	草原化荒漠区中间锦鸡儿灌丛土壤线虫群落
其他题名	Effects of Caragana intermedia on soil nematode communities in a steppe desert region
	宋承承; 梅续芳; 张鹏; 王业林; 王德凯; 解李娜; 马成仓
来源期刊	草业科学
ISSN	1001-0629
出版年	2021
卷号	38 期号:3 页码:1001-0629
中文摘要	为了探究灌木对土壤线虫群落的影响,采用湿漏斗法(Baermann法),调查了内蒙古草原化荒漠区中间锦鸡儿(Caragana intermedia)灌丛内和灌丛外不同土层(0 - 10、10 - 20、30 - 40 cm)土壤线虫群落组成结构。结果表明: 1)中间锦鸡儿灌丛显著提高了灌丛内表层土土壤线虫总数(P < 0.05),但对其物种数和Shannon-Wiener指数影响不显著(P > 0.05);随着土壤深度的增加,灌丛内土壤线虫总数和Shannon-Wiener指数逐渐减少。2)中间锦鸡儿灌丛显著增加了表层土食细菌和食真菌线虫总数;土壤深度显著影响食细菌、植物寄生和杂食捕食线虫总数(P < 0.05),且无论是灌丛内还是灌丛外,均表现为表层土或次表层土最多。3)中间锦鸡儿灌丛显著影响自由生活线虫成熟度指数/植物寄生线虫成熟度指数(maturity index/plant parasitic index, PPI/MI)比值(P < 0.05),表现为灌丛外大于灌丛内;土壤深度对其影响不显著(P > 0.05)。4)随着土壤深度的增加,中间锦鸡儿灌丛内土壤线虫向居住者类型(persister,cp3 - cp5)转变;而灌丛外向殖民者类型(colonizer,cp1或cp2)转变。冗余分析(RDA)结果表明,速效磷(P)和速效钾(K)是影响土壤线虫群落的主要环境因子,且不同属和不同营养类群的土壤线虫对环境的响应不同。
英文摘要	This study examined the effect of shrubs on soil nematode communities. We took the dominant shrub species Caragana intermedia in the Inner Mongolia steppe desert area as the target plant and investigated the soil nematode communities composition and structure under C. intermedia shrub canopies and in open areas at different soil depths (0 - 10, 10 - 20, 30 - 40 cm) using the wet funnel method (Baermann method). The results showed that 1) The total number of soil nematodes in the top soil layer was higher under C. intermedia shrub canopies than in the open areas, but the species richness and Shannon-Wiener index were not significantly different between the canopy conditions (P > 0.05). The total number and Shannon-Wiener index of the soil nematodes decreased as the soil depth increased. 2) The number of bacterialfeeder and fungal-feeder nematodes in the top soil layer was higher under the shrub canopies than in open areas. Soil depth significantly affected the total number of bacterial-feeder, plant-parasitic, and omnivorous-predation nematodes, and their total numbers were highest at the soil surface and in the subsurface soil layer. 3) Shrubs had a significant effect on PPI/MI values (P < 0.05), which showed that the values were higher in open areas than under the shrub canopies. Soil depth had no significant effect on the PPI/MI values (P > 0.05). 4) As the soil depth increased, the community structure of the soil nematodes changed to the resident trophic groups (persister, cp3 - cp5) under the shrub canopies, and to the colonizer trophic groups (colonizer, cp1 or cp2) in open areas. The RDA analysis revealed that available P and available K are the primary environmental factors influencing soil nematode communities, and that nematodes communities belonging to different taxa and trophic groups respond to environmental conditions in different ways.
中文关键词	线虫群落 ; 多样性指数 ; 功能性指数 ; top-down效应 ; 草原化荒漠 ; 中间锦鸡儿
英文关键词	nematode communities diversity indices functional indices top-down effects steppe desert Caragana intermedia
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6950924
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/354174
作者单位	宋承承, 天津师范大学生命科学学院, 天津市动植物抗性重点实验室, 天津 300387, 中国.; 梅续芳, 天津师范大学生命科学学院, 天津市动植物抗性重点实验室, 天津 300387, 中国.; 张鹏, 天津师范大学生命科学学院, 天津市动植物抗性重点实验室, 天津 300387, 中国.; 王业林, 天津师范大学生命科学学院, 天津市动植物抗性重点实验室, 天津 300387, 中国.; 王德凯, 天津师范大学生命科学学院, 天津市动植物抗性重点实验室, 天津 300387, 中国.; 解李娜, 天津师范大学生命科学学院, 天津市动植物抗性重点实验室, 天津 300387, 中国.; 马成仓, 天津师范大学生命科学学院, 天津市动植物抗性重点实验室, 天津 300387, 中国.
推荐引用方式 GB/T 7714	宋承承,梅续芳,张鹏,等. 草原化荒漠区中间锦鸡儿灌丛土壤线虫群落[J],2021,38(3):1001-0629.
APA	宋承承.,梅续芳.,张鹏.,王业林.,王德凯.,...&马成仓.(2021).草原化荒漠区中间锦鸡儿灌丛土壤线虫群落.草业科学,38(3),1001-0629.
MLA	宋承承,et al."草原化荒漠区中间锦鸡儿灌丛土壤线虫群落".草业科学 38.3(2021):1001-0629.