CAJ | 학술논문

为了解低级溪流水质下降的原因,对黑龙江省尚志市帽儿山境内阿什河流域内的1～5级溪流河水进行采样,测定了溪水样品的pH值,溶解氧(DO),浑浊度,温度,NO3--N、NH4+-N、TDIN、全磷(TP,包括无机磷和有机磷)和PO43+-P含量,记录各采样点的溪流级别和土地利用类型.根据各样点水质的测定结果,对不同溪流级别和土地利用类型溪流的水质进行比较,并对各样点进行聚类分析.结果显示不同级别和土地利用类型的溪流水质之间存在显著差异.具有不同环境特征的采样点归于同一类的原因主要是随机的人类干扰.这种随机的干扰导致了溪流水质的恶化,使溪流水质的空间变化不遵从一般的规律.表4图1参37.
위료해저급계류수질하강적원인,대흑룡강성상지시모인산경내아십하류역내적1～5급계류하수진행채양,측정료계수양품적pH치,용해양(DO),혼탁도,온도,NO3--N、NH4+-N、TDIN、전린(TP,포괄무궤린화유궤린)화PO43+-P함량,기록각채양점적계류급별화토지이용류형.근거각양점수질적측정결과,대불동계류급별화토지이용류형계류적수질진행비교,병대각양점진행취류분석.결과현시불동급별화토지이용류형적계류수질지간존재현저차이.구유불동배경특정적채양점귀우동일류적원인주요시수궤적인류간우.저충수궤적간우도치료계류수질적악화,사계류수질적공간변화불준종일반적규률.표4도1삼37.
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, PO43--P, NO3--N and NH4+-N concentrations, total dissolved inorganic nitrogen (TDIN-N, including concentrations of NO3--N and NH4+-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.