Spatial and temporal distribution patterns of loadings of different phosphorous forms in Lake Dianchi

被引：2

作者：

Yu Y. ^{[1
,2
,3
,4
]}

Fang X. ^{[2
]}

Wang S. ^{[3
,4
]}

Zhang R. ^{[3
,4
]}

Jiao L. ^{[3
,4
]}

Li L. ^{[3
,4
]}

Wang X. ^{[1
]}

机构：

[1] College of Environmental Science and Engineering, Southwest Forestry University, Kunming

[2] Yunnan Academy of Forestry, Kunming

[3] State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing

[4] Research Center of Lake Eco-Environment, State Environmental Protection Key Laboratory for Lake Pollution Control, Chinese Research Academy of Environmental Sciences, Beijing

来源：

Jiao, Lixin (jiaolx@craes.org.cn) | 1600年 / Science Press卷 / 29期

关键词：

Contribution; Lake Dianchi; Phosphorous loading; Temporal and spatial changes;

D O I：

10.18307/2017.0107

中图分类号：

学科分类号：

摘要：

With the help of GIS spatial interpolation, based on the monthly observed data of water yield and phosphorous (P) concentrations in 36 sampling sites in Lake Dianchi, the loading contributions of different P forms was explored and the spatial and temporal patterns of the P concentrations and loadings were revealed in this paper, aiming at providing evidence for water pollution treatment and inner loading control. The results showed: The changes in total phosphorus (TP) concentrations in the water ranged between 0.13 and 0.64 mg/L, among which particulate phosphorus (PP) covered 72.6%, soluble reactive phosphorus (SRP) 12.8%, and dissolved organic phosphorus (DOP) 14%. During 2013 the average annual TP loading was 251 t/a, among PP loading 190 t/a, SRP 26 t/a, and DOP 34 t/a. TP loading in Lake Dianchi was mostly contributed by PP loading, averaging 76%, and secondly by DOP and SRP, averaging 10% and 13%, respectively. There was a significant difference in seasonal distributions in TP concentrations and loadings and in different P forms. The concentration was characterized with a higher value in summer and autumn in contrast to a relatively low value in winter and spring, while the loading was characterized with a higher value in autumn and winter in contrast to that in spring and summer. Thus, to quantitatively assess the loading of PP and SRP as well as their contributions to TP, was of great importance in guiding the control over the inner loading in Lake Dianchi. © 2017 by Journal of Lake Sciences.

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页码：59 / 68

页数：9

共 38 条

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