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LI Jing-wen, SHI Wen, YU Li-fan, LUO Hong, DA Liang-jun, SHEN Kungen. Approxnatural ecological restoration engineering and effectivenessanalysis of degraded Liwa Creek ecosystems[J]. Journal of East China Normal University (Natural Sciences), 2010, (4): 35-43.
Citation:
LI Jing-wen, SHI Wen, YU Li-fan, LUO Hong, DA Liang-jun, SHEN Kungen. Approxnatural ecological restoration engineering and effectivenessanalysis of degraded Liwa Creek ecosystems[J]. Journal of East China Normal University (Natural Sciences), 2010, (4): 35-43.
LI Jing-wen, SHI Wen, YU Li-fan, LUO Hong, DA Liang-jun, SHEN Kungen. Approxnatural ecological restoration engineering and effectivenessanalysis of degraded Liwa Creek ecosystems[J]. Journal of East China Normal University (Natural Sciences), 2010, (4): 35-43.
Citation:
LI Jing-wen, SHI Wen, YU Li-fan, LUO Hong, DA Liang-jun, SHEN Kungen. Approxnatural ecological restoration engineering and effectivenessanalysis of degraded Liwa Creek ecosystems[J]. Journal of East China Normal University (Natural Sciences), 2010, (4): 35-43.
Based on the eutrophication status and river channel characteristics of Liwa Creek, with the establishment of threedimentional plant communities and animal communities, the approxnatrual restoration engineering was carried out after traditional environmental engineering techniques. By comparing the changement of water quality, plant and animal communities in Liwa Creek before and after the engineering, the effects of this approxnatural restoration engineering were validated in this paper. The results show that after oneyear’s approxnatural restoration engineering measurement, TN and TP dropped respectively to 0.41 mg/L and 0.03 mg/L; contents of chlorophyll a dropped to 7.86 μg/L; Water quality was improved to a large degree, changing from the original class V to class Ⅱ standard. Besides, with the direct introduction of zoo benthos which filter feeding algae, Silver carp and bighead carp, biodiversity of animal communities is improved to a certain degree during the regulation of algae biomass. Practice proves that approxnatural restoration engineering is effective in the case of Liwa Creek based on low cost, which can finally be promoted during the approxnatural restoration practice of urban ecosystem.