首页|Establishment of a diatom-total phosphorus transfer function for lakes on the Songnen Plain in northeast China
Establishment of a diatom-total phosphorus transfer function for lakes on the Songnen Plain in northeast China
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国家科技期刊平台
NETL
NSTL
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To understand the relationship between planktonic diatoms and environmental variables in the lakes on the Songnen Plain,northeast (NE) China,we investigated water quality and planktonic diatoms from 71 sampling points in 27 lakes,based on which Canonical Correspondence Analysis (CCA) was conducted.The result show that planktonic diatoms displayed certain responses to environment gradients,and the total phosphorus (TP) explained the maximum variation of planktonic diatom species among the 15 environmental variables,suggesting that TP was the most important and significant environmental parameter affecting the distribution of diatom species.In addition,we established a diatom-total phosphorus transfer (DTPT) function,of which component 5 of the weighted averaging partial least squares regression (WA-PLS) was chosen to and compared with a series of weighted average regression (WA) models and WA-PLS models.According to the jackknifing statistical test,the component 5 of WA-PLS models provided a lower root-mean-square error prediction (RMSEP=0.202) and a higher correlation coefficient between observation and prediction (R2_Jack=0.759).After deletion of three outliers,the root-mean-square error prediction of the DTPT function was reduced (RMSEP=0.169) while the correlation coefficient between observation and prediction was increased (R2_Jack=0.823).Therefore,this DTPT function performed better than other regional TP models in the world.However,it remains demanding for expanding the background dataset to improve the prediction ability of the model.
Songnen Plaindiatomtotal phosphorustransfer function
SUI Fengyang、ZANG Shuying、FAN Yawen、LU Xinxin、HUI Hongkuan
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Key Laboratory of Remote Sensing Monitoring of Geographic Environment, College of Heilongjiang Province, Harbin Normal University, Harbin 150025, China
Key Laboratory of Biodiversity of Aquatic Organisms, Harbin Normal University, Harbin 150025, China
Qilu Normal University, Jinan 250200, China
Supported by the National Natural Science Foundation of ChinaSupported by the National Natural Science Foundation of ChinaSupported by the National Natural Science Foundation of China
国家科技期刊平台
NSTL
万方数据
