Phytoremediation for Oily Desert Soils
Phytoremediation for Oily Desert Soils
复制标题
油性沙漠土壤的植物修复
DOI：
10.1007/978-3-540-89621-0_15
复制
发表时间：
2009
期刊：
影响因子：
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通讯作者：
S. Radwan
中科院分区：
文献类型：
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作者：
S. Radwan
本章讨论通过根际技术清洁含油沙漠土壤的策略。生物修复包括两种主要方法：用合适的微生物播种和用微生物生长促进材料施肥。在石油污染的沙漠土壤中种植合适的作物可以实现这两个目标。许多豆科和非豆科植物的根际比非植物土壤更富含利用石油的微生物。此外，这些根际还窝藏共生和非共生固氮细菌，并富含植物根系分泌的简单有机化合物。这些渗出物是利用石油的微生物的极好营养物。由于许多根际细菌具有烃类利用和固氮的双重活性，植物修复为石油污染土壤，特别是贫氮荒漠土壤的修复提供了一种可行的环境友好型生物技术。
This chapter deals with strategies for cleaning oily desert soils through rhizosphere technology. Bioremediation involves two major approaches; seeding with suitable microorganisms and fertilization with microbial growth enhancing materials. Raising suitable crops in oil-polluted desert soils fulfills both objectives. The rhizosphere of many legume and non-legume plants is richer in oil-utilizing micro-organisms than non-vegetated soils. Furthermore, these rhizospheres also harbour symbiotic and asymbiotic nitrogen-fixing bacteria, and are rich in simple organic compounds exuded by plant roots. Those exudates are excellent nutrients for oil-utilizing microorganisms. Since many rhizospheric bacteria have the combined activities of hydrocarbon-utilization and nitrogen fixation, phytoremediation provides a feasible and environmentally friendly biotechnology for cleaning oil-polluted soils, especially nitrogen-poor desert soils.