## 3 Results
### Hot Spot Identification  
The symbology and hot spots of biogas production from various types of manure are illustrated in Figures 7 and 8. Primarily, the northern part of the country demonstrates a higher potential for biogas production from large animal manure, with four districts (Dinajpur, Naogano, Shirajganj, Mymensingh) identified as hot spots with a 95% confidence interval (Figure 8a). Conversely, only two districts (Patuakhali and Bhola) were recognized as hot spots (99% confidence) for biogas production from buffalo manure, while the remainder of Bangladesh exhibits extremely low biogas potential from these animals due to a smaller buffalo population (Figure 8b). The western part of Bangladesh shows potential for biogas production from goat manure, with three districts (Meherpur, Chuadanga, Jhenaidah) identified as hot spots with 99% a confidence interval, and four other districts (Kushtia, Rajshahi, Naogano, Joypurhat) classified as hot spots with a 95% confidence interval (Figure 8c). The northern part of the country displays hot spots (Dinajpur, Kurigram, Naogano, Bogra, Tangail) for biogas production from sheep manure (Figure 8d). For biogas production from poultry manure, one district (Mymensingh) was recognized as a hot spot for chicken manure and two districts (Comilla, Noakhali) (Figure 8e) for duck (Figure 8f) manure, respectively.  
As for biogas potential, the hot spots for compost production from various types of manure were based on symbiology analysis (Figure 9), which showed a similar pattern in regard to symbiology and hot spots. Hot spots for compost production from cattle manure were identified in the Sirajganj, Naogano, Faridpur, and Narail districts (Figure 10a). For buffalo manure, the Gaibandha and Patuakhali districts were designated as hot spots for compost production (Figure 10b). Likewise, the compost potential of goat manure was notably high in five districts: Khagrachori, Rajshahi, Narail, Lakshimpur, and Comilla (Figure 10c). In comparison, five other districts (Bogra, Tangail, Kushtia, Faridpur, Narail) were categorized as having very high potential for compost production from sheep manure (Figure 10d). The potential for compost from chicken manure was highest in the Naogano district. In contrast, Noakhali and Cox's Bazar ranked highest for duck manure compost in 2023 (Figure 10e,f).  
However, the potential for total biogas and compost production is influenced by the manure of large animals, particularly cattle manure. Thus, the patterns of biogas and compost production potential from cattle manure (Figures 7a and 9a) closely resemble those of total biogas and compost production (Figures 5a and 6a).  
Figure 7: Symbology for biogas production from different livestock manures in Bangladesh: (**a**) cattle manure; (**b**) buffalo manure; (**c**) goat manure; (**d**) sheep manure; (**e**) chicken manure; (**f**) duck manure.  
Figure 8: Hot spots for biogas production from different livestock manures in Bangladesh: (**a**) cattle manure; (**b**) buffalo manure; (**c**) goat manure; (**d**) sheep manure; (**e**) chicken manure; (**f**) duck manure.  
Figure 9: Symbology for compost production from different livestock manures in Bangladesh: (**a**) cattle manure; (**b**) buffalo manure; (**c**) goat manure; (**d**) sheep manure; (**e**) chicken manure; (**f**) duck manure.  
Figure 10: Hot spots for compost production from different livestock manures: (**a**) cattle manure; (**b**) buffalo manure; (**c**) goat manure; (**d**) sheep manure; (**e**) chicken manure; (**f**) duck manure.