Land suitability assessment is a prerequisite phase in land use planning; it guides toward optimal land use by providing information on the opportunities and constraints involved in the use of a given land area. A geo...Land suitability assessment is a prerequisite phase in land use planning; it guides toward optimal land use by providing information on the opportunities and constraints involved in the use of a given land area. A geographic information system-based procedure, known as rural settlement suitability evaluation(RSSE) using an improved technique for order preference by similarity to ideal solution(TOPSIS), was adopted to determine the most suitable area for constructing rural settlements in different geographical locations. Given the distribution and independence of rural settlements, a distinctive evaluation criteria system that differed from that of urban suitability was established by considering the level of rural infrastructure services as well as living and working conditions. The unpredictable mutual interference among evaluation factors has been found in practical works. An improved TOPSIS using Mahalanobis distance was applied to solve the unpredictable correlation among the criteria in a suitability evaluation. Uncertainty and sensitivity analyses obtained via Monte Carlo simulation were performed to examine the robustness of the model. Daye, a resource-based city with rapid economic development, unsatisfied rural development, and geological environmental problems caused by mining, was used as a case study. Results indicate the following findings: 1) The RSSE model using the improved TOPSIS can assess the suitability of rural settlements, and the suitability maps generated using the improved TOPSIS have higher information density than those generated using traditional TOPSIS. The robustness of the model is improved, and the uncertainty is reduced in the suitability results. 2) Highly suitable land is mainly distributed in the northeast of the study area, and the majority of which is cultivated land, thereby leading to tremendous pressure on the loss of cultivated land. 3) Lastly, 12.54% of the constructive expansion permitted zone and 8.36% of the constructive expansion conditionally permitted zone are situated in an unsuitable area, which indicates that the general planning of Daye lacks the necessary verification of suitability evaluation. Guidance is provided on the development strategy of rural settlement patches to support decision making in general land use planning.展开更多
Since the second half of the 20th century in Italy, following farming conversion or abandonment, many traditional agricultural systems and the connected landscapes along with them have disappeared. We discuss a concep...Since the second half of the 20th century in Italy, following farming conversion or abandonment, many traditional agricultural systems and the connected landscapes along with them have disappeared. We discuss a conceptual framework to understand and describe changing in agricultural landscapes. According to us, the traditionality of the agricultural landscape is an expression of the local coevolution between the social project of the farmer and the constraints made by the natural system. The paper focuses on defining a spatial-temporal analytical model based on both the morphological recognition of different typologies of elements which contribute to the environmental landscape mosaic and the dynamic observation of the transformations of the mosaic itself. We identify the natural, social and economic driving forces involved in defining the agricultural space using a transdisciplinary approach so that ecological, agronomics and socio-economical information must be integrated as a basis for land use planning and management. The research approach and the methodology are applied to a couple of case studies.展开更多
基金Under the auspices of National Natural Science Foundation of China(No.41371429,41401196)
文摘Land suitability assessment is a prerequisite phase in land use planning; it guides toward optimal land use by providing information on the opportunities and constraints involved in the use of a given land area. A geographic information system-based procedure, known as rural settlement suitability evaluation(RSSE) using an improved technique for order preference by similarity to ideal solution(TOPSIS), was adopted to determine the most suitable area for constructing rural settlements in different geographical locations. Given the distribution and independence of rural settlements, a distinctive evaluation criteria system that differed from that of urban suitability was established by considering the level of rural infrastructure services as well as living and working conditions. The unpredictable mutual interference among evaluation factors has been found in practical works. An improved TOPSIS using Mahalanobis distance was applied to solve the unpredictable correlation among the criteria in a suitability evaluation. Uncertainty and sensitivity analyses obtained via Monte Carlo simulation were performed to examine the robustness of the model. Daye, a resource-based city with rapid economic development, unsatisfied rural development, and geological environmental problems caused by mining, was used as a case study. Results indicate the following findings: 1) The RSSE model using the improved TOPSIS can assess the suitability of rural settlements, and the suitability maps generated using the improved TOPSIS have higher information density than those generated using traditional TOPSIS. The robustness of the model is improved, and the uncertainty is reduced in the suitability results. 2) Highly suitable land is mainly distributed in the northeast of the study area, and the majority of which is cultivated land, thereby leading to tremendous pressure on the loss of cultivated land. 3) Lastly, 12.54% of the constructive expansion permitted zone and 8.36% of the constructive expansion conditionally permitted zone are situated in an unsuitable area, which indicates that the general planning of Daye lacks the necessary verification of suitability evaluation. Guidance is provided on the development strategy of rural settlement patches to support decision making in general land use planning.
文摘Since the second half of the 20th century in Italy, following farming conversion or abandonment, many traditional agricultural systems and the connected landscapes along with them have disappeared. We discuss a conceptual framework to understand and describe changing in agricultural landscapes. According to us, the traditionality of the agricultural landscape is an expression of the local coevolution between the social project of the farmer and the constraints made by the natural system. The paper focuses on defining a spatial-temporal analytical model based on both the morphological recognition of different typologies of elements which contribute to the environmental landscape mosaic and the dynamic observation of the transformations of the mosaic itself. We identify the natural, social and economic driving forces involved in defining the agricultural space using a transdisciplinary approach so that ecological, agronomics and socio-economical information must be integrated as a basis for land use planning and management. The research approach and the methodology are applied to a couple of case studies.
