期刊论文

Gibbs free energy and chemical potentials of plant communities in a manganeseore tailing site undergoing ecological restoration

Wu, X.

中文

生态学报

1000-0933

2017

37

8

2694-2705

10.5846/stxb201512032425

基金项目：国家科技惠民计划项目（2012GS430203） 国家十二五科技支撑计划项目（2014BAC09800） 中南林业科技大学研究生科技创新基金项目（CX2015A02）

本校为第一且通讯机构

基于热力学理论建立了生态系统Gibbs自由能方程,用以计算湘潭锰矿生态修复区植被系统的自由能(G)和物种化学势(μ)。生态修复区(及对照区)以泡桐(Paulownia fortunei)和栾树(Koelreuteriα bipinnata)作为建群植物,总面积为4 hm2,修复区泡桐和栾树的根际施用了含有自试验点废弃矿渣中筛选出的耐性菌株的有机菌肥,目的是为植物生长提供必要养分和降低根际土壤重金属毒性,对照区泡桐和栾树的根际施用了等量的化肥。泡桐和栾树种植后5 a期间,修复区与对照区均自然萌发生长了许多本土植物种类。试验结果表明,修复区植物种类数达到48,为对照区的3.7倍;修复区的总生物量、锰吸收量分别达到23324 kg/hm...

Matter and energy exchanges constitute the basis of ecological processes. Therefore, ecosystems can be regarded as open thermodynamic systems, with bio-species as key components. The changes in ecosystem states can therefore be measured and compared in terms of Gibbs free energy (G) and chemical potential (µ). Based on thermodynamic theories, an ecosystem Gibbs free energy model was established for calculating the changes in G of plant communities and µ of the plant species, at an ecological restoration site of manganese-ore tailing in the Xi...