CAJ | 학술논문

根据嘉善平原区表层土壤3次不同时间的调查结果,对其表层土壤的重金属元素含量及酸碱度变化进行了分析.结果表明,重金属元素As、Cd、Cu、Hg在1990-2002年表现为累积,相对变化率最大的为Cu.2002-2008年Cd、Hg、Cu、Ni、Pb、Zn表现为累积,As、Cr略有下降,累积速率最大的为Cd.1990～2008年土壤环境质量下降显著,Ⅰ类土壤区从有到无,Ⅲ类土壤区增加了91.31 km2.土壤酸化明显,全县弱酸性土地从1990年到2008年增加了97.13 km~2.预测到2013年Ⅱ类土壤区面积为116.58 km~2,Ⅲ类土壤区面积为390.46 km~2,占全县面积的77%.强酸性土壤区面积为29.62 km~2,占5.84%,酸性土壤区面积为392.46 km~2,占77.4%.
근거가선평원구표층토양3차불동시간적조사결과,대기표층토양적중금속원소함량급산감도변화진행료분석.결과표명,중금속원소As、Cd、Cu、Hg재1990-2002년표현위루적,상대변화솔최대적위Cu.2002-2008년Cd、Hg、Cu、Ni、Pb、Zn표현위루적,As、Cr략유하강,루적속솔최대적위Cd.1990～2008년토양배경질량하강현저,Ⅰ류토양구종유도무,Ⅲ류토양구증가료91.31 km2.토양산화명현,전현약산성토지종1990년도2008년증가료97.13 km~2.예측도2013년Ⅱ류토양구면적위116.58 km~2,Ⅲ류토양구면적위390.46 km~2,점전현면적적77%.강산성토양구면적위29.62 km~2,점5.84%,산성토양구면적위392.46 km~2,점77.4%.
The heavy metal elements and pH values of the topsoil in Jiashan County northern Zhejiang Province have been investigated in three different periods. The result shows that the As, Cd, Cu and Hg were acumulated between 1990 and 2002, dominated by Cd. From 1990 to 2008, the soil quality markedly declined. For example, I-type soil increased from zero to acumulation, and III-type soil increased by 91.31 km2. Soil acidification is significant. While the soil area with weak acidification increased by 97.13 km~2 between 1990 and 2008. It is then predicted that II-type soil will cover an area of 116.58 km~2 and the Ⅲ-type soil, of 390.46 km2 by 2013, which may take up the 77% of the whole area. Also, the area of strong acid and acid soil will be 29.62 km~2 and 392.46 km~2, taking up 5.84% and 77.4%, respectively.