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1 材料与方法11 朔里塌陷区状况朔里塌陷区总面积约133ｈｍ2,水面面积约107ｈｍ2,其中水深超过4ｍ的水域面积近67ｈｍ2,为淮北市较大的水面。水质良好,透明度1ｍ以上,无污染,区周围为村庄及煤矿生活区,底质为石石千石及硬地,近岸为挺水植物,中央为沉水植物如轮叶黑藻。交通便
1 Materials and methods 11 Situation of Shuoli subsidence area The total area of Shuoli subsidence area is about 133hm2 and the surface area is about 107hm2. Among them, the water area exceeding 4m has an area of nearly 67hm2, which is the larger water surface in Huaibei. Good water quality, transparency 1m above, no pollution, the area around the village and coal mine living quarters for the stone stone and hard rock, nearshore for the emergent plants, the central submerged plants such as black algae. Traffic will be