The main biogenic element、trace metal and organic acid exudation in the root-soil interface of Kandelia obovata(S.L) under Phosphorus & Cadmium treatment
红树林生态系，广泛分布于热带亚热带的海岸潮间带，其独特的生物学和生态学特性为污染物的吸附治理提供了最佳的场所。然而，随着城市化和工业化的高度发展，大量生活污水和工业废水通过排污管道流向红树林湿地，近乎超出红树林系统的自净化能力，从而使得滨海湿地面临着日益严峻的金属污染和有机物污染。进入红树林湿地的污染物最先在根际区进行一系列的形态转化等过程而后才被植物吸收累积，因此，根际区物质循环已经成为近年来污染生态学的研究热点。对于红树林湿地而言，Cd作为一种常见的有毒金属污染物，尤为引起关注。Cd为植物非必需元素，然而其极易被红树植物吸收并累积，从而影响到红树植物生长和代谢；研究表明，Cd很大程度上影响...Mangrove ecosystem, distributed in the tropical and subtropical coastal line, is deemed as the best site for pollution removal. However, with the rapid development of urbanization and industry, large amount of waste water from daily life and industry has been dumped to the wetlands, almost exceeding the self-purification capacity of mangrove ecosystem. Coastal wetlands are facing increasing pollut...学位：理学博士院系专业：生命科学学院_生态学学号：2162010015387
