矿区废弃地土壤微生物及其生化活性  

Preliminary study on soil microbes and soil biochemical activities in mining wasteland

作　　者：龙健[1] 黄昌勇[1] 滕应[1] 姚槐应[1] 

机构地区：[1]浙江大学环境与资源学院资源科学系,杭州310029

出　　处：《生态学报》2003年第3期496-503,共8页Acta Ecologica Sinica

基　　金：国家自然科学基金资助项目 (4 0 1710 54 )~~

摘　　要：通过对浙江哩浦铜矿废弃地土壤的微生物、土壤酶活性及生化作用强度研究表明 :矿区土壤微生物总数下降 ,各主要生理类群数量均呈下降趋势 ,土壤酶活性减弱 ,土壤生化作用强度降低。土壤微生物活性降低是矿区复垦土壤微生物的重要生态特征之一。Mining,manufacture and disposal of metals and metal-containing meterials inevit ably cause soil contamination.One of the industries formerly causing severe cont amination of soils was the non-ferrous metallurgical industry. Pyrometallurgica l production process lead to large emissions of metals such as Cd,Zn,Pb,Cu,etc.D ue to the phytotoxicity of soil containing high levels of available metals,the n atural vegetation cover might have disappeared to leave a bare site behind. Such bare sites pose a risk for the surroundings because the absence of vegetation f acilitates lateral wind erosion of metal contamination particles,and may enhance the volume of water percolating through the soil and eventually reaching the un derlying ground water.Metal contamination of soil ecosystems negatively impact s a number of soil microbiological properties that could be potential indicators of soil quality and thus could be used as measures of reclamation progress and/ or success.Historically,soil chemical and physical parameters have been used as indicators of soil quality.but due to the role of the microorganisms in total ec osystem function and the sensitivity of soil microbial communities to disturbanc e,biological indicators may also be useful as measures of minesoil reclamation, The microbial community is an integral component of soil quality due. for exampl e,to the critical role it plays in the cycling of nutrients and formation of soi l structure. Soil microorganisms are also highly sensitive to disturbance in the soil ecosystem,and changes in soil microbes activities may be effective early s ignals of degradation or improvement of soil. Because the goal of the mining was teland remediation strategy was a reduction in bioavailability of the metals, mi crobial indicators should be especially useful in assessing its effectiveness. The copper mining wasteland in Lipu,Zhejiang Province,China,is consisted of stri pped mining topsoil and abandoned minning stone,which is stabilized by a tail mi ne dam. The wasteland sample

关 键 词：废弃地 矿区土壤 土壤微生物活性 土壤酶 重金属污染 

分 类 号：S154.34[农业科学—土壤学]