СARBON POOL AND BIOLOGICAL ACTIVITIES OF SOILS IN DIFFERENT ECOSYSTEMS
Journal Title: International journal of ecosystems and ecology science (IJEES) - Year 2019, Vol 9, Issue 1
Abstract
The content and stocks of carbon and the activity of microbiological destruction of organic matter in three types of chernozem soils in Ukraine have been investigated. An imbalance was found in the accumulation of the main components of the soil organic matter, as well as between mineralization processes, humus accumulation and degradation of cellulose in arable soils and their natural analogs. In the soil of natural ecosystems, the processes of mineralization -immobilization, destruction of organic matter and humus accumulation are balanced, which is confirmed by a high carbon pool (Сtot) and a fraction of Сmic in Сtot. In the soil of natural ecosystems processes of mineralization-immobilization, destruction of organ resources and humus-accumulating are balanced, which is confirmed by high-quality carbon pool and partial Сmic in Сtot. In agroecosystem is going destabilization of organic matter in the soil, which leads to a decrease of humus content in 1.1-1.5 times, stocks of organic matter - in 1.3-1.8 times. In arable soils, part of Соrg in the total soil carbon pool is 80-82% and 92-94% in the soil of the natural ecosystem. The losses of Соrg from chernozem soils in agroecosystem are 19-29% and this is due to a significant reduction in the content of Сmіc (63-71%). The application of different fertilizers causes destabilization of the soil microbial community, reduces microbial productivity and activates mineralization processes of organic matter, which leads to loss of Соrg and a decrease in the total carbon pool (Сtot) in the soil by 6-18%. The soil of natural ecosystems is characterized by a high content of Сmіc in the Соrg (3.14-3.70%), which indicates a high microbial productivity and fixation of organic substances in biomass of microorganisms. In the arable soils, was the low content of Сmіc in the organic matter of the soil (1.19-1.52%) which indicates the predominance of mineralization processes over the processes of humification. The application of exogenous mineral substances in the soil activates the processes of mineralization (Кmіn increases by 7-18%) and provides a high degree of using by microorganisms of soil organic matter (Кped increases by 6-9%). Organic fertilizers contribute to the formation of a maximum microbial pool, optimizing the structure of soil microbial community, decrease the intensity of mineralization processes (Кmіn) by 15-29% and the decomposition of soil organic matter by 6 to 37%. A significant difference in the parameters of the potential cellulolytic activity of the soil in the natural ecosystems and agroecosystems had been established. At the same time, the soil of natural ecosystems is characterized by a slight fluctuation of the emission СО2 (3.3-4.4 mg СО2 / kg of soils per day).
Authors and Affiliations
Olena Demyanyuk, Lyudmyla Symochko, Hosam E. A. F. Bayoumi Hamuda, Vitaliy Symochko, Olga Dmitrenko
MICROBIOLOGICAL CONTROL OF SOIL-BORNE ANTIBIOTIC RESISTANCE HUMAN PATHOGENS IN AGROECOSYSTEMS
The spread of antibiotic-resistant microorganisms is one of the biggest problems, for the solution of which is necessary a detailed study of this process. We detected the presence of pathogenic bacteria in soil of agroec...
THE ROLE OF IT IN THE DEVELOPMENT OF DISTANCE LEARNING IN PUBLIC AND PRIVATE UNIVERSITIES IN KOSOVO
Distance learning is a neologism in the context of computer-based learning and lies in the use of IT and communication in the teaching process. Learning is based on internet services (in distance) or through a CD-ROM (of...
EXPERIMENTAL STUDY ON THE EFFECT OF CARBON BLACK ON MECHANICAL PROPERTIES OF MORTAR SAMPLES
Today, the methods of recovering finished tires are becoming more and more widespread. Recycling of finished tires is done for various sizes from full to dust-free. The pyrolysis method, which is used in the recovery of...
INVESTIGATION OF AN IMPORTED MEASLES OUTBREAK
Measles virus infection remains a significant cause of childhood mortality and morbidity despite continued global efforts and the availability of a safe and effective vaccine.. After a 9 year period without confirmed mea...
RENEWABLE ENERGY: LEARNING BY MODELING
Modeling is one of the preferred methods to make learning permanent in science education. The aim of this research is to determine the students' perceptions about renewable energy by using modeling method. This research...