Evaluation of Phosphorus Flows in the Dianchi Watershed, Southwest of China

Liu, Yi; Chen, Jining; Mol, Arthur P.J.

doi:10.1023/b:poen.0000039068.58963.11

Cited by 36 publications

(23 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(4) The existing wrong connections alone contribute more than twice the TP tolerance of Dianchi Lake. Table 4 compares the TP results of Liu et al (2004); Liu (2005) and of this paper. As can be seen from the table, previous studies greatly underestimated the overflow load because they overlooked the large amount of sewer infiltration, including both groundwater and river water, entering the sewerage system.…”

Section: Current Conditionsmentioning

confidence: 85%

“…Its outflow is ultimately discharged into the Yangtze River. Urbanisation and lifestyle changes have on the one hand supplied citizens with convenient water and sanitation, but have on the other hand caused severe eutrophication of the lake since the 1980s (Liu et al, 2004).…”

Section: Study Area Descriptionmentioning

confidence: 99%

“…Wastewater discharge from urban drainage systems currently accounts for the main nutrient load to Dianchi Lake (KIES, 2003;Liu et al, 2004). Reliable quantifications of the flows of total nitrogen (TN) and TP in urban drainage systems are currently of major concern.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Confronting limitations: New solutions required for urban water management in Kunming City

Dongbin

Bader

Scheidegger

et al. 2007

Journal of Environmental Management

View full text Add to dashboard Cite

Section: Current Conditionsmentioning

confidence: 85%

Section: Study Area Descriptionmentioning

confidence: 99%

See 1 more Smart Citation

Confronting limitations: New solutions required for urban water management in Kunming City

Dongbin

Bader

Scheidegger

et al. 2007

Journal of Environmental Management

View full text Add to dashboard Cite

“…The widespread use of P and its disturbances on natural flows have resulted in serious P-related environmental issues. Today, P is considered to be a pollutant due to its contribution to the eutrophication of surface water (Carpenter et al, 1998;Chen et al, 2008;Liu et al, 2004). Eutrophication, which is caused by excessive input of P and nitrogen (N), is both a frequent and escalating problem in lakes, rivers, and coastal ocean zones (Smith et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

Understanding the anthropogenic phosphorus pathway with substance flow analysis at the city level

Yuan

Shi

et al. 2011

Journal of Environmental Management

View full text Add to dashboard Cite

“…exerting great pressure on the water quality of Lake Dianchi (Liu et al, 2004;Pan and Gao, 2010). Over the last 40 years, the total population density in Kunming rose from 142 individuals per km 2 in 1970 to 1260 individuals per km 2 in 2010, while the gross domestic product increased 65-fold (data sources: Kunming Statistical Yearbook, 2011).…”

Section: Characterization Of the Lake Dianchi Basinmentioning

confidence: 99%

Estimating net anthropogenic nitrogen inputs (NANI) in the Lake Dianchi basin of China

et al. 2014

View full text Add to dashboard Cite

Abstract. Net anthropogenic nitrogen inputs (NANI) with components of atmospheric N deposition, synthetic N fertilizer, agricultural N fixation and N in net food and feed imports from 15 catchments in the Lake Dianchi basin were determined over an 11-year period (2000-2010). The 15 catchments range in size from 44 km 2 to 316 km 2 with an average of 175 km 2 . To reduce uncertainty from scale change methodology, results from data extraction by area-weighting and land use-weighting methods were compared. Results show that the methodology for extrapolating data from the county scale to watersheds has a great influence on NANI computation for catchments in the Lake Dianchi basin, and that estimates of NANI between the two methods have an average difference of 30 % on a catchment basis, while a smaller difference (15 %) was observed on the whole Lake Dianchi basin basis. The riverine N export has a stronger linear relationship with NANI computed by the land useweighting method, which we believe is more reliable. Overall, nitrogen inputs assessed by the NANI approach for the Lake Dianchi basin are 9900 kg N km −2 yr −1 , ranging from 6600 to 28 000 kg N km −2 yr −1 among the 15 catchments. Synthetic N fertilizer is the largest component of NANI in most subwatersheds. On average, riverine flux of nitrogen in catchments of the Lake Dianchi basin averages 83 % of NANI, far higher than generally observed in North America and Europe. Saturated N sinks and a limited capacity for denitrification in rivers may be responsible for this high percentage of riverine N export. Overall, the NANI methodology should be applicable in small watersheds when sufficiently detailed data are available to estimate its components.

show abstract

Evaluation of Phosphorus Flows in the Dianchi Watershed, Southwest of China

Cited by 36 publications

References 19 publications

Confronting limitations: New solutions required for urban water management in Kunming City

Confronting limitations: New solutions required for urban water management in Kunming City

Understanding the anthropogenic phosphorus pathway with substance flow analysis at the city level

Estimating net anthropogenic nitrogen inputs (NANI) in the Lake Dianchi basin of China

Contact Info

Product

Resources

About