| Stream water quality and its influencing factor in lower order streams in upriver sections of Ashihe River |
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| 作者姓名： | GUO Bao-qin WANG Qing-cheng YU Hong-li Paul E Mou |
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| 作者单位： | [1]Forestry college of Northeast Forestry University, Harbin 150040, P. R China [2]University of North Carolina at Greensboro, NC 27402-6170, USA |
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| 基金项目： | This research was supported by a grant of the National Nature Science Foundation of China （No. 30370277）. |
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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 aiong the low order streams （1 st-5th） of Ashihe River continuum in Maoershan Experimental Forest of Northeast Forestry University, Sharlgzhi 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.
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| 关 键 词： | 森林水文学 水分蒸发 土壤 上游水源 林地渗透 |
| 文章编号： | 1007-662X（2005）03-0181-06 |
| 收稿时间： | 2005-01-23 |
| 修稿时间： | 2005-03-28 |
Stream water quality and its influencing factor in lower order streams in upriver sections of Ashihe River |
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| GUO Bao-qin WANG Qing-cheng YU Hong-li Paul E Mou.Stream water quality and its influencing factor in lower order streams in upriver sections of Ashihe River[J].Journal of Forestry Research,2005,16(3):181-186. |
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| Authors: | Guo Bao-qin Wang Qing-cheng Yu Hong-li Paul P Mou |
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| Institution: | (1) Forestry college of Northeast Forestry University, 150040 Harbin, P. R. China;(2) University of North Carolina at Greensboro, 27402-6170, NC, USA |
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| Abstract: | 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 qual- ity 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 dif- ference 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. |
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| Keywords: | Stream water quality Land-use Stream order Hierarchical cluster analysis |
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