Observation of mineral nutrients change and resorbtion of nitrogen and phosporus in some taxons which are deciduous and spread in Karaçalılık damaged forest in Amasya

This study was carricd out in Amasya Karaçalılık damaged forest on four plant taxons, two bushes which are(Lonicera etrusca Santi var. etrusca) and (Paliurus spina- christi P.Mill.), and disribution South and north two tree (Cerasus mahaleb (L.) Mill. var mahaleb ) and (Populus tremula L. subsp. tremula ). Annual change dynamics of N and P and leaf resorption change in samples taken from taxon leaves were investigated. In addition, the effects of soil factors and lignin concentration in the leaf on leaf resorption were investigated. Plant taxa were classified according to Grime plant strategies. Leaf emergence patterns were determined based on phenological observations in each plant taxon and the effects of phenological developmental phases on resorption were determined. All the species studied have a flush type with a short leaf emergence period and a nearly simultaneous emergence of all leaves. When the SLA values of the species were examined, it was found that the SLA values of the species selected in the North direction were lower. In all the species, it was observed that the N content was high in the young leaf phase, the N contents showed similar values from the leaves ripened to the senescence period, and the contents decreased during the senescence period. In contrast, the P contents were found to be more irregular. Except for P. tremula subsp. tremula, the N content was found to be higher in the northern slopes, and the P value was observed to be higher in tree species than in shrub species. In general, the lignin ratio was high in the South direction in the species. In the study, P. tremula subsp. tremula and C. mahaleb var. mahaleb N/P ratio is less than 14, in L. etrusca var. etrusca the upper limit of the N/P ratio in the parcels was found to be less than 16. In the species of P. spina-christi, the N/P ratio in the south direction is greater than the 16 limit. P. spina-christ type, the N/P ratio in the south direction was greater than the 16 limit. In the currunt study N concentration deficiency was observed in P. tremula subsp. tremula and C. mahaleb var. mahaleb. According to the Grime strategies L. etrusca var. etrusca C/CR, P. spina-christi C/CR, P. tremula subsp. tremula CR and C. mahaleb var. mahaleb were found to have C/CR strategy. NRE and PRE values were found to be higher in tree-formed species. NRP values were found to be higher in shrub-form species, while PRP values were found to be higher in tree-form species. At the same time, higher N efficiency was observed in the south direction in trees and in the north direction in shrubs. RRE, except for L. etrusca var. etrusca was found to be higher in the south direction. A negative relationship was found between the soil N content and NRE in the north direction in L. etrusca and C. mahaleb var. mahaleb found a negative relationship between the soil P value and PRE, while a negative relationship was found between the soil pH value and NRP and PRP in tree species Lonicera. etrusca var. etrusca, P. tremula subsp. tremula and C. mahaleb var. mahaleb species. L. etrusca var. Except for the P. spina-christi, a negative relationship was found between NRE and lignin. P. spina-christi and P. tremula subsp. tremula a negative relationship between PRE and lignin in species. In conclusion, the findings show that the N and P contents, the efficiency and proficiency values change depending on the geographical direction, and the amount of lignin in leaves affects the phenological development phases, the soil values and the efficiency and proficiency of resorption.