Full
Outline
To analyze the spatial distribution characteristics and equity of methadone maintenance treatment (MMT) resources in Guangdong Province from 2017 to 2022，and to provide evidence for optimizing resource allocation.
Kernel density analysis was used to analyze the spatial distribution characteristics. The Gini coefficient, Lorenz curve, and Health resource agglomeration degree (HRAD) was employed to evaluate the overall and inter-regional equity of MMT resource allocation in Guangdong Province.
The spatial distribution of MMT clinics in Guangdong Province showed significant clustering, mainly concentrated in the Pearl River Delta (PRD) region, Jieyang and Shantou City in the eastern region, and Zhanjiang and Maoming City in the western region of the province. From 2017 to 2022, the number of MMT participants in Guangdong Province decreased from 8 237 to 3 630, whereas the number of MMT clinics increased from 66 to 75. During the same period, the Gini coefficient increased from 0.22 in 2017 to 0.29 in 2021, and then decreased to 0.23 in 2022. The HRAD of MMT resource increased from 1.65 to 5.23, and then declined to 2.08 in 2022, with marked variation across regions. Taking the year 2020 as an example, HRAD across cities in Guangdong Province ranged between 0.46 to 73.79. Specifically, the western region had an HRAD closest to 1 (0.87), while the eastern region had the highest value of 18.13, followed by the northern region (6.03) and the PRD (1.65), respectively.
From 2017 to 2022, MMT resources in Guangdong Province showed a clustering distribution, mainly in PRD region. The overall allocation of MMT resource was relatively equitable; however, a significant inter-regional disparities remained, suggesting an oversupply in eastern and northern Guangdong. MMT resource allocation should therefore be dynamically adjusted according to the local scale and changing trends of MMT participants in order to improve equity and utilization efficiency.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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