## 3 Methodology
### Design of Garbage Dump Based on Ecological Restoration Theory  
Effective management of urban garbage landfills involves comprehensive land use planning and factors such as economic, social, and ecological considerations. We use an integrated assessment approach that synergizes our understanding of the impact of natural factors and human activities on the potential functionality and recoverability of landfills. The integrated assessment approach includes two dimensions: natural impacts and human impacts, as shown in Table 2. Each dimension contains a number of specific indicators that help provide a comprehensive assessment of potential landfills. The Natural Impact Index focuses primarily on the characteristics of the natural environment surrounding potential landfills. Using detailed analysis of GIS, we studied elements such as topography (extracted by DEM), slope properties, dominant wind direction (using Hebei meteorological data), and vegetation cover (calculated from the dimidiate pixel model). To understand the influence of human activities, our attention was focused on land use types, existing transport systems, and the distribution of facilities like plants, scenic spots, and residential areas. The OpenStreetMap vector data provided essential support for assessing traffic levels, with distance classifications included. To ensure the validity of our evaluation, we employed the analytical hierarchy process (AHP), a renowned decision-making method for complex, multi-criteria problem-solving. By determining the weight of each evaluation indicator, we were able to guide the planning process by giving precedence to indicators of vital importance. By employing cluster analysis on metrics derived from evaluation indicators, we segmented regions into hierarchical levels of suitability for landfill development. Each class of suitability had its inherent characteristics that informed the design allocated to that region. The culmination of our evaluation resulted in the strategic design of functional partitions in the dump area. Our design diverged from traditional landfill structures by dividing the landfill site into four functional regions--a garbage collection and distribution area, a garbage art area, an \begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Model** & **Acc** & **Pre** & **Re** & **Spe** & **Dice** \\ \hline SEVnet & 0.91783 & 0.90293 & 0.81753 & 0.89754 & 0.95695 \\ Unet & 0.85976 & 0.84675 & 0.73622 & 0.85093 & 0.91398 \\ Unet++ & 0.88539 & 0.86773 & 0.75724 & 0.89231 & 0.92594 \\ Attention Unet & 0.89636 & 0.90154 & 0.82736 & 0.88452 & 0.94534 \\ \hline \hline \end{tabular}
\end{table} 
Table 1: The performance indicators of the four models. \begin{table}
\begin{tabular}{c c c c} \hline \hline
**Dimension** & **Factor** & **Specific Indicators** & \begin{tabular}{c} **Calculation Method** \\ **and Data** \\ \end{tabular} \\ \hline \multirow{4}{*}{Natural influence} & Terrain & \begin{tabular}{c} Terrain \\ Slope \\ \end{tabular} & Extracted by DEM \\ \cline{2-4}  & & Climate & \begin{tabular}{c} Dominant wind \\ direction \\ \end{tabular} & \
\begin{tabular}{c} Meteorological data \\ of Hebei \\ \end{tabular} \\ \cline{2-4}  & Vegetation & Vegetation coverage &
\begin{tabular}{c} Dimidiate pixel \\ model \\ \end{tabular} \\ \hline \multirow{4}{*}{Human influence} & Land use & Types of land use & Land use type data \\ \cline{2-4}  & & Traffic level \\ \cline{2-4}  & & Plant distribution \\ \cline{1-1} \cline{2-4}  & Socioeconomic & Distribution of scenic spots & OSM vector data, distance classification \\ \cline{1-1} \cline{2-4}  & & Distribution of residential areas \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Evaluation index system for urban garbage landfill sites. experimental field research area, and an ecological restoration area. The functional content of each functional area is shown in Table 3.  
Urban household waste in China has the basic characteristics of mixed components, high moisture content, and low calorific value.