Human disturbance affects enzyme activity, microbial biomass and organic carbon in tropical dry sub-humid pasture and forest soils

被引:25
作者
De Barros, Jamilly Alves [1 ]
De Medeiros, Erika Valente [1 ]
Da Costa, Diogo Paes [1 ]
Duda, Gustavo Pereira [1 ]
De Sousa Lima, Jose Romualdo [1 ]
Dos Santos, Uemeson Jose [2 ]
Dantas Antonino, Antonio Celso [2 ]
Hammecker, Claude [3 ]
机构
[1] Univ Fed Rural Pernambuco, Acad Unit Garanhuns, Garanhuns, Brazil
[2] Univ Fed Pernambuco, Recife, PE, Brazil
[3] IRD UMR Eco & Sol, Montpellier, France
关键词
Microbial activity; carbon cycling; low-disturbance pasture; microbial diversity; fatty acids profiles; COMMUNITY STRUCTURE; COLORIMETRIC DETERMINATION; PATTERNS; SYSTEMS; BIOREMEDIATION; AVAILABILITY; CONVERSION; DIVERSITY; DYNAMICS; TILLAGE;
D O I
10.1080/03650340.2019.1622095
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
The Brazilian dry forest occupies an area of about 1 million km(2) approximately 46% of which has been deforested. Many studies have been done on the effects of this on productivity and soil chemical attributes. However, little is known about soil enzymatic activity, which is sensitive to environmental changes. The objective of this study was to evaluate the effects of deforestation using different levels of human disturbance on soil enzyme activities, organic carbon content, microbial biomass, and microbial community. We studied areas covered with forest (TDF), old grass (OG), or new grass (NG). Soils from NG had increased microorganisms, which restored important processes related to carbon, sulfur, and nitrogen cycling, so that they resembled those in the forested area. The results of this study showed that the conversion of forest to pasture with a high level of human disturbance could decrease the activities of beta-glucosidase, urease, alkaline phosphatase, and fluorescein diacetate in the soil by up to 87%, 66%, 62%, and 58%, respectively. These findings suggest that human disturbance can cause substantial changes in the enzymatic activity and microbial community in the soil. We suggest that maintaining grass pasture with low human disturbance should have fewer impacts on soil quality.
引用
收藏
页码:458 / 472
页数:15
相关论文
共 26 条
[21]   Drying and wetting in saline and saline-sodic soils—effects on microbial activity, biomass and dissolved organic carbon [J].
Manpreet S. Mavi ;
Petra Marschner .
Plant and Soil, 2012, 355 :51-62
[22]   Effects of Different Straw Incorporation Amounts on Soil Organic Carbon, Microbial Biomass, and Enzyme Activities in Dry-Crop Farmland [J].
Zhang, Xinyi ;
Ren, Xiaoyan ;
Cai, Liqun .
SUSTAINABILITY, 2024, 16 (23)
[23]   Drying and wetting in saline and saline-sodic soils-effects on microbial activity, biomass and dissolved organic carbon [J].
Mavi, Manpreet S. ;
Marschner, Petra .
PLANT AND SOIL, 2012, 355 (1-2) :51-62
[24]   A comparative account of the microbial biomass-N and N-mineralization of soils under natural forest, grassland and crop field from dry tropical region, India [J].
Singh, Jay S. ;
Singh, D. P. ;
Kashyap, A. K. .
PLANT SOIL AND ENVIRONMENT, 2009, 55 (06) :223-230
[25]   LONG-TERM EFFECT OF ORGANIC AND CONVENTIONAL FARMING PRACTICES ON MICROBIAL BIOMASS CARBON, ENZYME ACTIVITIES AND MICROBIAL POPULATIONS IN DIFFERENT TEXTURED SOILS OF HARYANA STATE (INDIA) [J].
Sheoran, H. S. ;
Phogat, V. K. ;
Dahiya, R. ;
Gera, R. .
APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH, 2018, 16 (03) :3669-3689
[26]   Integrating seasonal dynamics and human impact on microbial biomass carbon across deep soil profiles in tropical Sal forest of Achanakmar-Amarkantak Biosphere Reserve, India [J].
Singh, Samyak ;
Dixit, Bhavana ;
Singh, Ashish ;
Prajapati, Lata ;
Chandrakar, Shishir ;
Tamrakar, Aakriti .
SCIENTIFIC REPORTS, 2025, 15 (01)