Microbiological Properties in Cropping Systems and Their Relationship with Water Erosion in the Brazilian Cerrado

被引：8

作者：

Merlo, Marina Neves ^{[1
]}

Avanzi, Junior Cesar ^{[2
]}

Moreira da Silva, Lucas de Castro ^{[3
]}

Aragao, Osnar Obede da Silva ^{[4
]}

Borghi, Emerson ^{[5
]}

Moreira, Fatima Maria de Souza ^{[2
]}

Thebaldi, Michael Silveira ^{[1
]}

de Resende, Alvaro Vilela ^{[5
]}

Silva, Marx Leandro Naves ^{[2
]}

Silva, Bruno Montoani ^{[2
]}

机构：

[1] Univ Fed Lavras, Dept Water Resources, BR-37200900 Lavras, Brazil

[2] Univ Fed Lavras, Dept Soil Sci, BR-37200900 Lavras, Brazil

[3] Univ Fed Vicosa, Dept Agr Engn, BR-36570900 Vicosa, MG, Brazil

[4] Fed Inst Para, Campus Breves, BR-68800000 Breves, Brazil

[5] Brazilian Agr Res Corp Embrapa, BR-35701970 Sete Lagoas, Brazil

来源：

WATER | 2022年 / 14卷 / 04期

关键词：

soil erosion; microbial biomass; basal soil respiration; cover crop; no-tillage; SOIL MICROBIAL BIOMASS; NO-TILL; INTENSIFICATION; MOISTURE; QUALITY; RUNOFF; YIELD;

D O I：

10.3390/w14040614

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Many researchers have reported relationships of physical and chemical properties with water erosion; however, little is known about microbiological properties in this context. Thus, the aim of this study was to evaluate soil properties in relation to erosion in areas with different cropping system practices under no-tillage in the Brazilian Cerrado. The experiment has been carried out since 2014 in a Typic Haplustox under soybean (S) and maize (M) monoculture, maize/soybean annual rotation (MS), maize/brachiaria/soybean/brachiaria rotation (MBSB), two of those treatments with high input of fertilizer (MBSB-HI and MS-HI), and bare soil (BS). Soil losses were quantified in erosion plots. The design was completely randomized. The greater vegetation cover crop, provided by intercropping/succession with brachiaria, increased microbial biomass carbon. The lack of vegetation cover affected the basal soil respiration and metabolic quotient. Basal soil respiration proved to be inversely related to soil and water losses. Vegetation cover was a key factor regulating water erosion. Penetration resistance and aggregate stability correlated with soil and water losses. Thus, not only physical and chemical, but also biological properties are deeply affected by erosion, aiding in early monitoring of water erosion. Soil quality improvement in ecologically supported management contributes to mitigating erosion.

引用

页数：15

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