【摘要】：水土流失是陸源徑流污染的重要因素和面源污染的關鍵源;海綿城市對減輕丘陵盆地城市水環(huán)境問題至關重要。在規(guī)劃前期采取系統(tǒng)性、前瞻性方法對提高海綿設施實效有重要意義。以黃石市環(huán)磁湖地區(qū)為例,基于水土流失防治探討丘陵盆地海綿城市規(guī)劃方法。首先基于IDRISI平臺結合修正通用土壤流失方程(RUSLE)對現(xiàn)狀進行模擬,得出平均土壤侵蝕模數(shù)[t/(hm~2·y)]和入湖沉積物總量(t/y),診斷現(xiàn)狀水土流失不利地區(qū),引導海綿設施布局;對規(guī)劃情景采用相同的模擬和分析方法,通過比較規(guī)劃前、后的結論揭示海綿城市策略對水土流失污染防治的實效性。根據(jù)結果,規(guī)劃將使平均土壤侵蝕模數(shù)和入湖沉積總量分別降低10.76%和3.337%,土壤流失緩解地區(qū)比例顯著大于加重地區(qū)。
[Abstract]:Soil and water loss is an important factor of land runoff pollution and a key source of non-point source pollution, and sponge city is very important to alleviate urban water environmental problems in hilly basin. It is important to adopt systematic and prospective methods to improve the effectiveness of sponge facilities in the early stage of planning. Based on soil erosion prevention and control, the planning method of sponge city in hilly basin is discussed in this paper, taking Huangshi City as an example. Based on the IDRISI platform and modified general soil erosion equation (RUSLE), the current situation is simulated, and the average soil erosion modulus [t / (hm~2 y)] and the total sediment amount (t / y) into the lake are obtained to diagnose the unfavorable soil erosion areas. Guide sponge facility layout; The same simulation and analysis methods were used for planning scenarios, and the effectiveness of spongy city strategy on soil erosion pollution control was revealed by comparing the results before and after planning. According to the results, the average soil erosion modulus and the total sediment amount into the lake will be reduced by 10.76% and 3.337%, respectively, and the proportion of soil erosion mitigation area will be significantly larger than that of the accentuated area.
【作者單位】： 上海市政工程設計研究總院(集團)有限公司;
【分類號】：S157;TU992
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本文編號：2421354