Climatic and human drivers of recent lake-level change in East Juyan Lake, China

Xiao, Suguang; Peng, Xianzhi; Tian, Qian

doi:10.1007/s10113-015-0822-1

Cited by 18 publications

(11 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Table 5 shows that 11 of the 18 surveyed of the water quality indices has a significant contribution defined in this analysis of volatility, particularly strong positive correlations showed Chl a, temperature, pH, and thus parameters characterizing the processes of proliferation of biomass phytoplankton, COD-Cr, TN, TH, Ca 2+ , which variation is associated primarily with the inflow of water from the river Gunica rich in organic matter and the suspension, and -SO 4 2-and Fe tot , which means the existence of persisting coagulant (FeSO 4 ) impact on the ecosystem of the Glebokie Lake. Wilks 'λ -standard statistics used to determine the statistical significance of the current discriminative power of the model (range from 1 to 0, where 0 indicates perfect discriminatory power); Partial Wilks' λ -defining the specific contribution of the variable to discrimination group (the smaller the value, the greater the discriminatory power of the variable); Tolerance -determines the redundancy of a given variable, defined as 1 -R 2 [26,32].…”

Section: Principal Component Analysis/factor Analysismentioning

confidence: 93%

“…Also PC3 (13.6% of total variance) was positively correlated with Chl a and NO 2 -and negatively with SRP and Fe tot while PC4 (7.8% of the total variance) showed only negative correlation with Chl a, SRP, TP and alkalinity -showing a big influence of phytoplankton blooms (multiplication phytoplankton biomass). The last principal component -PC5 -described 6.1% of the total variance and was strongly positively correlated with SO 4 2-and Fe tot and negatively with pH. PC5.…”

Section: Principal Component Analysis/factor Analysismentioning

confidence: 97%

“…The results of partial Wilks' λ (Table 5) indicate that ammonia, BOD 5 , temperature, TP and SO 4 2-are the most important variables in the first discriminant criterion. It points to the overlap of processes of assimilation, dissimilation, and a significant decomposition of organic matter of anthropogenic origin.…”

Section: Discriminant Analysismentioning

confidence: 99%

“…These parameters indicate the increased inflow of phosphorus compounds and the decomposition of organic matter (in the case of the III criterion) and the very significant impact of anthropopression on the ecosystem (criterion IV). The analysis indicated water quality parameters of the Glebokie Lake which variability was the most affected by pressure factors -seasonality, water supply from the river Gunica: BOD 5 , COD-Cr, SO 4 2-, TP, NO 3 -and NH 4 + . The BOD 5 and COD-Cr presence among the most affected variables was also indicative of additional pressure factor influencing water quality in the Glebokie Lake -the shifting balance between assimilation and dissimilation processes.…”

Section: Discriminant Analysismentioning

confidence: 99%

“…In a drastic way phenomenon occurs, eg in Asia [1][2][3][4]. However, it is also present in central Europe [5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Glebokie Lake in Szczecin after hydrotechnical regulations

Miller

Svobodová

Meller

et al. 2016

Ecological Chemistry and Engineering S

View full text Add to dashboard Cite

Water quality of the Glebokie Lake in Szczecin (NW-Poland) was studied in years 2012-2014. Glebokie Lake is a reservoir with a negative water balance related to the location draining groundwater drinking water intake for Szczecin agglomeration. In 2004 hydrotechnical regulations were conducted aimed at maintaining a constant amount of water in the lake, which involved a temporary feeding Glebokie Lake with Gunica River waters. In order to determine the hydrochemical status of the Lake waters and the factors shaping water quality -19 water quality indices within 25 months were measured: temperature, pH and water oxygen status, nutrients (N, P) and ionic macrocomponents and Fetot. Trophic status of the lake waters using the Carlson criteria was defined. On the basis of chemometric analysis of measurement data (CA, PCA/FA and DA) we established that statistically significant factors affecting water quality in the study period were: seasonal (the climatic seasons) changes in the biological processes activity, periodical (in April and November) waters inflows from the Gunica River, anthropopressure in during swimming season and the coagulant (FeSO4) presence in the ecosystem. The possibility of applying the chemometric techniques to interpret measurement data in the lake type like Glebokie Lake with a small amount of data has been shown.

show abstract

Section: Principal Component Analysis/factor Analysismentioning

confidence: 93%

Section: Principal Component Analysis/factor Analysismentioning

confidence: 97%

Section: Discriminant Analysismentioning

confidence: 99%

Section: Discriminant Analysismentioning

confidence: 99%

“…In a drastic way phenomenon occurs, eg in Asia [1][2][3][4]. However, it is also present in central Europe [5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Glebokie Lake in Szczecin after hydrotechnical regulations

Miller

Svobodová

Meller

et al. 2016

Ecological Chemistry and Engineering S

View full text Add to dashboard Cite

show abstract

The potential risk of soil salinization on vegetation restoration by ecological water conveyance project in Qingtu Lake Wetland, northwestern China

Hu,

Meng,

et al. 2023

Land Degrad Dev

View full text Add to dashboard Cite

The Ecological Water Conveyance Project (EWCP) is an important measure to restore the degraded vegetation ecosystem in Qingtu Lake Wetland (QLW), a terminal lake wetland of an arid inland river basin in northwestern China. Although many previous studies have demonstrated the positive effect of EWCP for vegetation restoration, they have ignored the possible soil salinization by EWCP which could lead to re‐degradation of restored vegetation in QLW. Therefore, the purpose of this study is to reveal the potential risk of soil salinization on sustainable vegetation restoration in QLW. Three satellite remote sensing‐based indices (i.e., Normalized Difference Vegetation Index (NDVI), Salinity Index, and Normalized Difference Water Index) are used to indicate the spatio‐temporal evolutions of vegetation growth status, surface soil salinity, and water surface. Additionally, ground data of groundwater, soil, and ecological water volume are collected. The development of soil salinization and its risk on vegetation restoration as well as its controlling factors are subsequently studied by combining remote sensing and ground‐based data. The results indicate that the vegetation restored during the first few years of EWCP in the southwest, west, and north of QLW has degraded again due to the aggravation of soil salinization in these regions since 2019. Soil salinization was accelerated by the low groundwater depth with high mineralization and high evaporation capacity of climate without adequate inundation of ecological water. Under current ecological water management in QLW, soil salinization will intensify and vegetation will further degrade. The artificial management of ecological water in QLW has created a complex relationship among vegetation growth, soil salinization, and groundwater. This indicates the irrationality of using a fixed relationship between groundwater depth and NDVI for the computation of optimal ecological water volume in previous studies. More field monitoring of groundwater‐soil‐surface water‐plant‐atmosphere continuum and process‐based modeling of water‐salt transport and vegetation growth should be conducted in the future.

show abstract

Potential assessment of floating photovoltaic solar power in China and its environmental effect

Liang

Yang

et al. 2023

Clean Techn Environ Policy

View full text Add to dashboard Cite

Climatic and human drivers of recent lake-level change in East Juyan Lake, China

Cited by 18 publications

References 31 publications

Glebokie Lake in Szczecin after hydrotechnical regulations

Glebokie Lake in Szczecin after hydrotechnical regulations

The potential risk of soil salinization on vegetation restoration by ecological water conveyance project in Qingtu Lake Wetland, northwestern China

Potential assessment of floating photovoltaic solar power in China and its environmental effect

Contact Info

Product

Resources

About