摘要
为探讨贵州省百花湖(水库)消落带土壤磷的释放状况,采用实验室模拟法研究了不同消落带土壤和环境条件变化对百花湖消落带土壤磷释放的影响,分析磷的释放量与磷赋存形态的关系。结果表明:未淹的黄壤释磷量最大,砂石壤最低;温度升高,土壤中磷的释放强度随之增大;扰动上覆水比静置条件下更有利于磷的释放;酸性和碱性条件下土壤磷的释放量略高于中性条件,且碱性条件下最高;厌氧条件比好氧条件更能加速磷释放;不同形态磷与土壤磷释放量有不同程度相关,其中有机磷(OP)与磷的释放极显著相关;与铁铝结合态磷(Fe/Al-P)和钙结合态磷(Ca-P)显著性相关。
Effects of environmental factors on the phosphorus release were studied by laboratory simulated test. The quantity of releasing phosphorus and the relationships between the different forms of phosphorus in soils of water-level-fluctuating zone of Baihua Reservoir were studied. Results showed that the phosphorus release amount was the most in yellow soils, and the least in the sand soils. The release strength of phosphorus from the soils increased with rising of the temperature. The phosphorus release amount under the stirring condition was more than under still condition. The soils released more phosphorus under the non-neutral condition compared to the neutral condition; the anaerobic condition was propitious to the phosphorus than the aerobic condition. Phosphorus form was related to the release. The OP in soils played the most important roles in phosphorus release; the Fe/AI-P and Ca-P wcrc in high correlation with soil phosphorus release.
出处
《生态科学》
CSCD
北大核心
2013年第3期372-378,共7页
Ecological Science
基金
国家重点基础研究发展计划973前期(2012CB426506)
贵阳市重大科技专项([2010]5-03)
贵州师范大学学生科研重点项目
关键词
消落带
磷释放
土壤
百花湖
water-level-fluctuating zone
phosphorous release
soil
Baihua Reservoir.
