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为研究土地利用对溪流水质的影响 ,对黑龙江省尚志市帽儿山境内阿什河流域的 1～ 5级溪流河水进行采样 ,同时记载森林覆盖度、邻近土地利用类型及地貌特征。对溪水样品的的 p H,浑浊度 ,NH+ 4- N、NO- 3- N和 PO3+ 3- P浓度进行分析测定。对不同溪流级别和土地利用类型的溪流河水进行分析。结果表明 :随着溪流级别的升高和土地利用类型由森林变为农田和村镇 ,溪流河水的 p H,浑浊度 ,NH+ 4- N、NO- 3- N和 PO3- 3- P浓度均显著升高。森林植被保存相对较好的 1、2级溪流水质最佳 ,但溪水中溶解无机磷和无机氮的浓度与美国温带地区相似的低级溪流相比 ,分别高 30倍和 1 0 0倍。河岸带破坏 ,土地利用的变化 ,放牧、樵采等频繁干扰造成的土壤侵蚀和养分流失输入是造成该流域溪流富营养化的主要原因
In order to study the impact of land use on the water quality of streams, sampling of streams 1 ~ 5 in streams of Mao River in Mao’er Mountain, Shangzhi City, Heilongjiang Province, and record of forest coverage, adjacent land use types and geomorphological features. The p H, turbidity, NH + 4-N, NO-3- N and PO3 + 3-P concentrations in the stream samples were analyzed and determined. Analysis of stream streams of different streams and land use types. The results showed that the concentrations of p H, turbidity, NH + 4-N, NO-3-N and PO3- 3 -P were significantly higher in the brook streams as the level of the streams increased and the types of land use changed from forests to farmlands and villages Rise. The first and second grade streams with the best preserved forest vegetation had the best water quality. However, the concentrations of dissolved inorganic phosphorus and inorganic nitrogen in stream water were 30 times and 100 times higher than those of similar low grade streams in the temperate regions of the United States. The main reason for the eutrophication of streams in the river basin is the input of soil erosion and nutrient loss due to frequent disturbance such as riparian zone destruction, land use change, grazing,