الفقد الكتلي وديناميكية بعض المغذيات والتغير الكمي والنوعي في البكتيريا والفطريات خلال عملية تحلل الأوراق الأبرية البنية للعرعر الفينيقي في الجبل الأخضر- ليبيا

Abstract

This study aims to track the change in the mass of brown fallen leaves of juniper in the Aljabal Alakhdar, as well as the quantitative and qualitative change in bacteria and fungi during the stages of decomposition and the dynamics of nitrogen, phosphorous and potassium and determine the concentrations and pathways of their change during the decomposition process. It was found that the mass loss in the leaves of the juniper plant increased with the decomposition stages. As for the concentrations of total nitrogen, total phosphorus and total potassium (%) were varied during the decomposition stages. Within 24,12,8,6,4,2 months of incubation, a Leaching wash, restriction, and release process occurred. As for total phosphorus, it tended to increase from the beginning of incubation in the field where its concentration in brown needle leaves before incubation changed from 0.10 to 0.12, 0.10, 0.10, 0.10, 0.10, 0.10 north and 0.22, 0.22, 0.17, 0.17, 0.22, 0.07 south to the first site As for potassium, it was reported that it washes in clear quantities from the beginning of incubation, as it decreased from 0.10 in the sample before incubation to 0.12, 0.10, 0.10, 0.10, 0.10, 0.10 N and 0.10, 0.08, 0.10, 0.12, 0.14, 0.12 S for the first site. For the second site 0.10 0.09, 0.12, 0.08, 0.12, 0.10 north, and the south side of the tree in the second location 0.10, 0.20, 0.08, 0.10, 0.06, 0.10 with fluctuations in concentrations. And the results of the statistical analysis showed the mass loss and the presence of significant differences between the two sites, as well as the presence of significant differences between the north side and the south side in the two sites and the comparison was made between the averages and it was found that there were significant differences as well as the lack of significant differences between the first site and time Sampling (after two months and after 4 months), and the differences were not significant between the south side and the time of sampling (after 8 months and after 12 months). As for the nitrogen component, the results showed that there were no significant differences between the time of sampling (after two months and after 6 months and early) and also showed no significant differences when comparing the time of sampling and sites (the second site and after 6 months the first site and After 8 months and the second site after 24 months) and when comparing (the first and second site and the time after two months) there are no significant differences. As for the potassium component, there was no significant difference when comparing the sampling time (after 8 months and after 6 months). As for the microbial colonies, the mean of preparation for bacteria and fungi were varied during the stages of decomposition. The results of the statistical analysis showed that there were significant differences between the stages of decomposition of kidney bacteria and the absence of significant differences between the stages of decomposition after two months and the early stage of azotobacter bacteria as well as the absence of significant differences For the stages of decomposition after two months, after four months, after 12 months for fusarium, and after 8 months, and after 24 months for penicillium, there are no significant differences between the stage of decomposition after six months and after 12 months.