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首页> 外文期刊>Journal of Forestry Research >Stream water quality and its influencing factor in lower order streams in upriver sections of Ashihe River
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Stream water quality and its influencing factor in lower order streams in upriver sections of Ashihe River

机译：阿什河上游河段下游水流水质及其影响因素

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摘要

For understanding the reasons that caused the degradation of water quality in lower order streams, systematic sampling was conducted at different spatial locations along the low order streams (1st-5th) of Ashihe River continuum in Maoershan Experimental Forest of Northeast Forestry University, Shangzhi City, Heilongjiang Province, China. The indexes of stream water quality, i.e., the pH, dissolved oxygen(DO), turbidity, temperature, PO_4~(3-)-P, NO~(3-)-N and NH_4~+-N concentrations, total dissolved inorganic nitrogen (TDIN-N, including concentrations of NO_3~--N and NH_4~+-N), and total phosphorus (inorganic and organic phosphorous, TP) were measured and analyzed. The stream order, related environmental settings and land-use type were recorded for each sampling location. The indexes of stream water quality at different locations with different stream orders and land use types were compared by ANOVA analysis. The indexes of stream water quality at different sampling locations were analyzed by Hierarchical cluster analysis. Result showed that water quality had significant difference in different stream orders and land use types; some locations with different stream features (stream order and land use type) were grouped into same clusters, indicating that random disturbances produced the variations in water quality, which made the spatial variances of stream water quality inconsistent with the general rules.
机译：为了解造成低阶流水质恶化的原因，在上官市东北林业大学茅尔山实验林中，在沿阿什河连续体低阶流（1-5号）的不同空间位置进行了系统采样。中国黑龙江省。溪水水质的pH值，溶解氧（DO），浊度，温度，PO_4〜（3-）-P，NO〜（3-）-N和NH_4〜+ -N浓度，总溶解无机物的指标测定并分析了氮（TDIN-N，包括NO_3〜--N和NH_4〜+ -N的浓度）和总磷（无机和有机磷，TP）。记录每个采样地点的河流次序，相关的环境设置和土地利用类型。通过ANOVA分析比较了不同流域，不同土地利用类型的流域水质指标。采用分层聚类分析方法，对不同采样点的溪水水质指标进行了分析。结果表明，不同溪流次序和土地利用类型的水质差异显着。一些具有不同溪流特征（溪流顺序和土地利用类型）的位置被归为同一类，这表明随机扰动引起水质的变化，这使得溪流水质的空间变化与一般规则不一致。

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