关键词: 兴凯湖, 沼泽, 玉米田, 土壤养分, 利用方式

Abstract: In order to explore the effects of land use on soil nutrients,the soil nutrient status of the typical land use mode in Xingkai Lake area was compared and analyzed in the swamps and corn fields. The results showed that the change of soil nutrient content was obvious. The mean distribution of soil pH was corn field>swamp; Soil organic matter was content swamp>corn field; Alkali hydrolysable nitrogen,available phosphorus and quick available potassium as swamp>corn field,of which the content of available potassium was about 1.9 times that of the corn field. The content of soil nutrients had large spatial differentiation,and the variation of alkali hydrolysable nitrogen,available phosphorus and soil organic matter were higher in the swamp soil,and the variation coefficient of different soil layers in the corn soil was the highest,and the other was lower. Person correlation analysis showed that there was a significant negative correlation between alkaline hydrolysable nitrogen and Ni in swamp soil,and there was a significant negative correlation between soil organic matter and Zn and Cr in corn field. There was a significant negative correlation between alkali hydrolysable nitrogen and Zn,and there was no significant correlation between other soil nutrient indicators and heavy metals.

Key words: Xingkai Lake, swamp, corn field, soil nutrients, use types