Variations in soil phosphorus fractionations in different water-stable aggregates under litter and inorganic fertilizer treatment in Korean pine plantation and its natural forest
Anwaar Hussain,
Muhammad Atif Jamil,
Kulsoom Abid,
Lixin Chen,
Kashif Khan,
Wenbiao Duan,
Tajwar Alam,
Umair Riaz
Affiliations
Anwaar Hussain
School of Forestry, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Sustainable Forest Ecosystem Management, Ministry of Education, Northeast Forestry University, Harbin 150040, China
Muhammad Atif Jamil
School of Forestry, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Sustainable Forest Ecosystem Management, Ministry of Education, Northeast Forestry University, Harbin 150040, China
Kulsoom Abid
Department of Natural Resource Management (NRM), National Agricultural Research Center (NARC), Islamabad 44000, Pakistan
Lixin Chen
School of Forestry, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Sustainable Forest Ecosystem Management, Ministry of Education, Northeast Forestry University, Harbin 150040, China; Corresponding author. School of Forestry, Northeast Forestry University, Harbin 150040, China.
Kashif Khan
School of Forestry, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Sustainable Forest Ecosystem Management, Ministry of Education, Northeast Forestry University, Harbin 150040, China
Wenbiao Duan
School of Forestry, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Sustainable Forest Ecosystem Management, Ministry of Education, Northeast Forestry University, Harbin 150040, China; Corresponding author. School of Forestry, Northeast Forestry University, Harbin 150040, China.,
Tajwar Alam
Institute of Soil and Environmental Sciences, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi 46300, Pakistan
Umair Riaz
Department of Soil & Environmental Sciences, MNS University of Agriculture, Multan-60000, Pakistan
Soil aggregation in forest ecosystem is considered as a significant physical process mainly influenced by manure, fertilizers or combination. This aggregation may directly alter the soil nutrient and their fractions in soil. So, soil samples were collected from two types of forests i.e. Natural Korean pine forests (NKPF) and Korean pine plantation (KPP) in order to know the quantities of organic and inorganic Phosphorus (P) amounts in different aggregate sizes viz. >5 mm, 2–5 mm, 0.25–2 mm, 5 mm) and decreased with the decreasing aggregate size, while other variables, i.e., NaOH-Pi, NaHCO3-Po, pH and T-N were not affected in aggregate size. H2O-Pi (48 ppm), NaHCO3-Pi (68 ppm), NaHCO3-Po (80 ppm), NaOH-Po (623 ppm), HCL-Po (67 ppm), SOC (20.36 ± 1.6) was estimated in medium fertilizer treatment. PCA analysis showed that spread/variance of data points on F1 (62.90%) is more than spread/variance of data points on F2 (57.74%) in NKPF and KPP, respectively, while correlation matrix showed high correlation between H2O-Pi and NaOH-Pi (0.63) and H2O-Pi and NaHCO3-Pi (0.63) while a strong negative correlation was present between Res-Pi and Po (−0.61). Moreover, litter inputs increased the organic-P fractions in soil particularly at medium treatment.
