# Study of the Dynamic Adaptive Calculation Method for River Water Environmental Capacity
## 5 Conclusions  
The WEC of the river is a quantity that dynamically changes over time. It is influenced by numerous factors, including hydrological conditions, model parameters, spatial scales, and human activities. The calculation of WEC should adopt a dynamic method rather than a static one. At present, most scholars at home and abroad use a specific hydrological condition or a deterministic model to calculate the WEC. In order to solve the problem that traditional WEC calculation is difficult to adapt to the needs and changes in hydrological conditions, in this study, a dynamic adaptive calculation method is proposed for WEC. The implementation of this method necessitates the support of information technology. Based on an integrated platform, knowledge graph technology is used to visualize the river water function area. The WEC calculation model is componentized by integrating component technology, SOA architecture, and Web service technology. The knowledge \begin{table}
\begin{tabular}{l l c c c c c c c c c c} \hline \hline
**Level** & **WEC** & **Jan.** & **Feb.** & **Mar.** & **Apr.** & **May.** & **Jun.** & **Jul.** & **Aug.** & **Sep.** & **Oct.** & **Nov.** & **Dec.** \\ \hline
90\% &
\begin{tabular}{c} Upper \\ limit \\ Lower \\ limit \\ \end{tabular} & 396.4 & 39.6 & 59.9 & 1089.7 & 2489.9 & 2364.6 & 1282.6 & 539.1 & 3004.6 & 1176.8 & 423.9 & 604.5 \\
237.8 & 6.4 & 8.3 & 363.9 & 1252.2 & 1072.3 & 790.5 & 315.9 & 1399.6 & 814.1 & 274.3 & 216.1 \\ \hline
75\% &
\begin{tabular}{c} Upper \\ limit \\ Lower \\ limit \\ \end{tabular} & 559.7 & 288.9 & 414.8 & 1530.2 & 3467.8 & 3573.9 & 1947.5 & 1772.6 & 4302.3 & 2173.3 & 1664.5 & 863.9 \\
233.6 & 23.3 & 119.6 & 611.6 & 1853.4 & 1692.3 & 1152.6 & 922.1 & 2389.5 & 1174.9 & 557.4 & 390.6 \\
230\% &
\begin{tabular}{c} Upper \\ limit \\ Lower \\ limit \\ \end{tabular} & 1102.9 & 738.6 & 1319.9 & 2242.4 & 4278.6 & 5019.3 & 4557.5 & 4979.1 & 5681.2 & 5321.9 & 2686.1 & 1861.9 \\
231.1 & 421.1 & 90.4 & 637.8 & 1196.9 & 2545.7 & 2183.1 & 2853.2 & 3139.5 & 3732.3 & 3375.5 & 1626.5 & 1140.7 \\ \hline \hline \end{tabular}
\end{table} 
Table 2: The calculation results interval of COD WEC of different design frequencies in Gansu-Shaanxi buffer zone of Wei River in each month. unit: t/a. \begin{table}
\begin{tabular}{l l c c c c c c c c c c c} \hline \hline
**Level** & **WEC** & **Jan.** & **Feb.** & **Mar.** & **Apr.** & **May.** & **Jun.** & **Jul.** & **Aug.** & **Sep.** & **Oct.** & **Nov.** & **Dec.** \\ \hline
90\% &
\begin{tabular}{c} Upper \\ limit \\ Lower \\ limit \\ \end{tabular} & 55.9 & 41.9 & 27.3 & 104.0 & 204.5 & 230.7 & 143.2 & 112.5 & 281.9 & 170.5 & 79.0 & 104.7 \\
38.4 & 20.9 & 5.4 & 55.3 & 131.1 & 154.7 & 112.3 & 59.5 & 208.2 & 123.5 & 43.0 & 47.9 \\
375\% &
\begin{tabular}{c} Upper \\ limit \\ Lower \\ limit \\ \end{tabular} & 114.4 & 80.2 & 89.0 & 140.8 & 227.9 & 244.8 & 265.3 & 252.5 & 359.5 & 292.9 & 131.5 & 103.8 \\
35.3 & 32.0 & 34.5 & 76.9 & 143.5 & 177.4 & 203.4 & 136.9 & 254.9 & 229.9 & 86.0 & 65.4 \\
350\% &
\begin{tabular}{c} Upper \\ limit \\ \end{tabular} & 155.7 & 109.4 & 144.8 & 293.0 & 359.7 & 328.4 & 464.7 & 505.1 & 622.8 & 537.8 & 280.8 & 230.5 \\
35.3 & 32.0 & 34.5 & 96.0 & 128.9 & 264.5 & 229.1 & 297.5 & 320.3 & 445.3 & 349.4 & 117.8 & 102.5 \\ \hline \hline \end{tabular}
\end{table} 
Table 3: The calculation results interval of NH\({}_{3}\)-N WEC of different design frequencies in Gansu-Shaanxi buffer zone of Wei River in each month. unit: t/a. graph and components are used to build a dynamic adaptive WEC calculation simulation system quickly and flexibly. The WEC dynamic adaptive calculation method is applied to the Shaanxi section of the Wei River, and the WEC dynamic adaptive calculation simulation system of the Shaanxi section of the Wei River is constructed. The following conclusions are obtained:  
1. The size of the river WEC is closely related to factors such as design flow, water period, spatial scale, parameters, water quality objectives, and others.