Effect of ecological restoration on topsoil phosphorus following afforestation on abandoned ponds in northern Chaohu Lake, China

Afforestation is an approach for ecological restoration. Soil total phosphorus one of the important and evolutionary elements carbon cycles plant growth following afforestation. However, studies on soil afforestation abandoned ponds with different slopes are still lacking. other properties from sites were investigated. phosphorus, nitrogen, bulk density, water contents pH poplar ( Populus spp.) plantation (Slope 1) a steep slope pond cypress Taxodium 2) flat determined. nitrogen stocks, stocks ratio to (N:P) calculated. Results showed that content, three layers at Slope 1 significantly lower than those 2. N:P was higher, but no significant difference found between two sampling sites. content had positive relationships both stocks. No obvious correlation or Redundancy analysis (RDA analysis) suggested density most individual effect values 59.3% 59.5%, respectively. It recommended gentle rather gradient could be helpful accumulation decrease risk loss, when used