CAJ | 학술논문

对三峡库区长江干流和典型支流流域内不同消落带落干初期和后期土壤中有机质（OM）、全氮（TN）和全磷（TP）分布特征进行了分析。结果表明消落带土壤OM、TN和TP含量均值分别为9.87g·kg^-1,0.70g·kg^-1和0.59g·kg^-1,与前人研究结果相比均较低。落干期间消落带土壤营养物含量均有一定的积累,土壤OM、TN、TP含量分别增加了1.5%,7.6%和10.8%,淹水后具有向上覆水释放氮磷的风险。统计特征分析表明,落干初期和落干后期消落带土壤OM和TN的变异系数均较TP大,说明土壤OM和TN受环境和人为因素影响较大,在空间分布上具有较大的异质性。
대삼협고구장강간류화전형지류류역내불동소락대락간초기화후기토양중유궤질（OM）、전담（TN）화전린（TP）분포특정진행료분석。결과표명소락대토양OM、TN화TP함량균치분별위9.87g·kg^-1,0.70g·kg^-1화0.59g·kg^-1,여전인연구결과상비균교저。락간기간소락대토양영양물함량균유일정적적루,토양OM、TN、TP함량분별증가료1.5%,7.6%화10.8%,엄수후구유향상복수석방담린적풍험。통계특정분석표명,락간초기화락간후기소락대토양OM화TN적변이계수균교TP대,설명토양OM화TN수배경화인위인소영향교대,재공간분포상구유교대적이질성。
The distribution characteristics of organic matter（OM）,total nitrogen（TN） and total phosphorus in the soil of water-level-fluctuating zone（WLFZ） of the Three Gorges Reservoir Area during the non-flooded period were studied.The contents of OM,TN and TP in the soil of WLFZ were 9.87 g·kg^-10.70 g·kg^-1and 0.59 g·kg^-1respectively,all lower than the results obtained by previous researchers.The nutrients in the soil of WLFZ accumulated during the non-flooded period,and the contents of OM,TN and TP increased by 1.5%,7.6% and 10.8% respectively,which means there is a risk of nitrogen and phosphorus release due to rising water during flooding period.The analysis of statistical results showed that the variation coefficients of OM and TN in the soil of WLFZ were bigger than that of TP,suggesting that OM and TN in the soil were more influenced by the environmental and human elements and had heterogeneity in space distribution.