## 4 Conclusions and Discussion
Further analysis demonstrated that along with the social-economic development, urbanization, and industrialization of Ningde City during the past 20 years, non-agricultural construction has occupied a large amount of cultivated land, resulting in the continuous decline of cultivated land area, which makes the per-capita cultivated land area of Ningde City increasingly tight, making it another important factor for the decline of Ess; the percentage of ESV of cultivated land decreased from 2.36% to 1.83%, which was the biggest decline among all land types. Apart from the decrease in cultivated land area, the possible reason for the decline of cultivated land in ESV may also be related to the implementation of \"the balanced system of cultivated land occupation and compensation\" (hereinafter referred to as the \"Compensation System\") by the government. According to the survey, in order to compensate cultivated land occupied for built-up land, e.g., urbanization and industrial uses, the Chinese government introduced this Compensation System. According to the stipulations, the local government must provide the same amount of cultivated land of the same quality (hereinafter referred to as the \"same amount and same quality\") as compensation. But the government has not been strictly in accordance with this provision for compensation in the actual implementation process. Thus, the government should strictly implement the principle of the \"same amount and same quality\" in carrying out the \"CompensationSystem\". In formulating relevant policies, it should also consider the changes in ecosystem services value brought by land-use transformation, and control the transfer of cultivated land to ecosystem services value that decreases synergistically, such as built-up land and unutilized land. Meanwhile, farmers should be guided to establish the concept that \"the natural environment and ecological functions are valuable\" in order to reduce the negative effects which are generated by the agricultural production to the ecological environment and finally enhance the overall ESV of cultivated land. Furthermore, from the perspective of the types of ecosystem services in this region, regulating services are the most important function of its ecosystem services, and their value has reached CNY \(2092.64\times 10^{8}\) over the past 20 years, accounting for \(68.43\%\) of the total value of ESV. The second is supporting services, which account for \(21.39\%\), but the cultural services value is the lowest, accounting for only \(4.31\%\) of the total value. This phenomenon has also been verified in the planning analysis of township area. Consequently, we suggest that the development and utilization of resources in Ningde City attach importance to the constraints of ecological sensitivity and ecological suitability. Simultaneously, farmers' production activities are guided by the development conviction that lucid waters and lush mountains are invaluable assets, and sticks to the path of green and sustainable development. The preceding discussion underscores the importance of embracing environmentally friendly and resource-conserving technologies to foster the development of ecological agriculture, thereby facilitating the ecologicalization and ecological industrialization of rural industries. Given Ningde City's location in a hilly mountainous area characterized by complex geological structures and high fragmentation degrees, human activities strongly impact its ecological environment. In response to this situation, we advocate for meticulous planning prior to the formulation of regional economic development plans. The Ningde municipal government should undertake scientific spatial control planning and functional regionalization for industrial development based on the analysis results of the ecological sensitivity of regional resources and land ecological suitability.