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首页> 外文期刊>Applied Soil Ecology >Soil nutrition, microbial composition and associated soil enzyme activities in KwaZulu-Natal grasslands and savannah ecosystems soils
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Soil nutrition, microbial composition and associated soil enzyme activities in KwaZulu-Natal grasslands and savannah ecosystems soils

机译：夸祖鲁 - 纳塔尔草原和大草原生态系统土壤营养，微生物组成及相关土壤酶活性

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摘要

Successful agriculture is dependent on soil quality and nutrition. Soil is the primary source of nutrients that are assimilated by plant root-systems to promote plant growth and development. The availability of these soil nutrients is regulated by factors such as pH, microbial composition and soil nutrient enzyme activities in ecosystem soils. This study aim was to determine the nutrition, microbe composition, and soil enzyme activities in four soils from different KwaZulu-Natal (KZN) grassland and savannah ecosystems. The four sites were found to differ significantly in their physical, chemical and biological properties. Microorganisms identified in the soils were from the families Bacillaceae, Hypocreaceae, Mucoraceae, and Nectriaceae. Bacterial and fungal genera identified among these soils showed varying diversity and species richness. Bergville soils had the lowest pH, cation exchange capacity, micro, and macro nutrient concentrations. Furthermore, Bergville soils showed reduced asparaginase and lignin peroxidase activities and had the lowest dehydrogenase activities. Therefore Bergville soils showed the minimum geochemical properties which may affect the growth of grassland and savannah ecosystem vegetation and sustainable agricultural practices.
机译：成功的农业取决于土壤质量和营养。土壤是由植物根系和促进植物生长和发育的植物根系同化的营养素的主要来源。这些土壤营养素的可用性受到生态系统土壤中pH，微生物组成和土壤养分酶活性等因素的调节。该研究目的是在不同夸祖鲁 - 纳塔尔（KZN）草地和大草原生态系统中的四种土壤中确定营养，微生物组成和土壤酶活性。发现四个地点在其物理，化学和生物学性质中显着不同。土壤中鉴定的微生物来自家庭杆菌，胚泽，粘膜酸和奈斯蒂亚乙醚。这些土壤中鉴定的细菌和真菌属性显示出不同的多样性和物种丰富性。 Bergville土壤具有最低的pH，阳离子交换能力，微观和宏观营养浓度。此外，Bergville土壤表现出芦冬蛋白酶和木质素过氧化物酶活性，并且具有最低的脱氢酶活性。因此，Bergville土壤显示出的地球化学性质最小，可能影响草原和大草原生态系统植被和可持续农业实践的增长。

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