干旱区生态环境知识资源中心(Arid): Shading and intercropping with buffelgrass pasture affect soil biological properties in the Brazilian semi-arid region

Arid

DOI	10.1016/j.catena.2018.12.021
	Shading and intercropping with buffelgrass pasture affect soil biological properties in the Brazilian semi-arid region
	Menezes, Karen M. S.1; Silva, Danielle K. A.2; Gouveia, Gisele Veneroni 1; da Costa, Mateus M.1; Queiroz, Mario A. A.1; Yano-Melo, Adriana M.1
通讯作者	Yano-Melo, Adriana M.
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2019
卷号	175 页码:236-250
英文摘要	The objective of this work was to evaluate the changes caused by shading and intercropping with a legume (Clitoria ternatea L.) in a grass (Cenchrus ciliaris L.) pasture on the microbiological and biochemical attributes of the soil. Microbial biomass carbon (MB-C), soil respiration, the activities of soil enzymes (beta-glucosidase, acid phosphatase and urease) and total soil fungal and bacterial were evaluated. Soil samples were collected at four periods: before intercropping (BI), at 120, 165 and 210 days of cultivation and under four shading levels 0 (full sun), 26, 39 and 55%. Before intercropping (BI), shading affected biological and biochemical parameters by increasing the MB-C but reducing soil respiration, resulting in a reduction of qCO(2). There was an increase in MB-C and beta-glucosidase in the intercropping treatment and 39% shading, while under monoculture an increment in MB-C was reached only under 55% shading at 120 days of cultivation. The highest CO2 fluxes by soil respiration were observed in the intercropping areas and in the shaded areas at 0, 26 and 39% at 120 days of cultivation. The intercropping system and the higher levels of shading reduced the qCO(2) at all sampling time. The highest soil urease activity occurred in the intercropping areas and in full sunlight, regardless of the sampling time, while acid phosphatase presented greater activity in the intercropped areas at 165 days of cultivation. From the multivariate analysis, it was possible to verify that the effects of intercropping are evident at 165 days of cultivation with the formation of two distinct groups and an increase in the biological quality in the intercropped areas. For qPCR it was verified that only shading affected the amounts of total soil fungi and bacteria; the use of shading reduced the amount of fungi only at 120 days, while for bacteria, the use of 26% shading in the BI period and full sun at 165 days increased the amount of bacteria. This variation of shading effect over time on the amount of fungi and bacteria may indicate changes in the composition of fungal and bacterial species. It is concluded that shading and intercropping with C. ternatea into C. clitoris pasture promotes improvements in soil quality indicators under semi-arid conditions.
英文关键词	Microbial biomass carbon Soil respiration beta-Glucosidase Acid phosphatase Urease qPCR
类型	Article
语种	英语
国家	Brazil
收录类别	SCI-E
WOS记录号	WOS:000459358500022
WOS关键词	MICROBIAL BIOMASS ; ENZYMATIC-ACTIVITIES ; CROPPING SYSTEM ; UREASE ACTIVITY ; RESPONSES ; PLANT ; COMMUNITIES ; MANAGEMENT ; GRASSLAND ; RESPIRATION
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214825
作者单位	1.Univ Fed Vale Sao Francisco, Colegiado Zootecnia, CCA, Rodovia BR 407,Km 12,Lote 543, BR-56300990 Petrolina, PE, Brazil; 2.Univ Fed Vale Sao Francisco, Programa Posgrad Agron Prod Vegetal, Campus Ciencias Agr,Rodovia BR 407,Km 12,Lote 543, BR-56300990 Petrolina, PE, Brazil
推荐引用方式 GB/T 7714	Menezes, Karen M. S.,Silva, Danielle K. A.,Gouveia, Gisele Veneroni,et al. Shading and intercropping with buffelgrass pasture affect soil biological properties in the Brazilian semi-arid region[J],2019,175:236-250.
APA	Menezes, Karen M. S.,Silva, Danielle K. A.,Gouveia, Gisele Veneroni,da Costa, Mateus M.,Queiroz, Mario A. A.,&Yano-Melo, Adriana M..(2019).Shading and intercropping with buffelgrass pasture affect soil biological properties in the Brazilian semi-arid region.CATENA,175,236-250.
MLA	Menezes, Karen M. S.,et al."Shading and intercropping with buffelgrass pasture affect soil biological properties in the Brazilian semi-arid region".CATENA 175(2019):236-250.