Spatiotemporal differences of land use pattern between mountainous areas and basin areas at township scale: A case study of Yuxi City

Abstract

Land use/land cover change is an important carrier for the study of human-land relationship. Yuxi City is a typical area of with alternating mountain and basin landforms, forming a special human-land system with “mountains” and “basins” as the core elements. Taking 75 towns in Yuxi City, Yunnan Province as a case study, this paper uses a comprehensive evaluation model of land use/land cover change and related analysis methods to analyze the changes of land use pattern in mountainous areas and basin areas respectively from 1995 to 2018, and to reveal their spatial differences and its influencing factors. The results show that: 1) The dynamic evolution of land use in the mountainous area and the basin area presented obvious stage characteristics. From 1995 to 2005, the average comprehensive dynamic degree of land use in the mountainous area was 1.7861, which was significantly higher than the 1.7033 in the basin area. The average comprehensive dynamic degree of land use in mountainous areas from 2005 to 2018 was 1.1284, which was significantly lower than 1.9427 in the basin area. 2) From 1995 to 2018, the land use degree and the comprehensive dynamic degree of land use continued to rise in the basin area, while the mountainous area showed a trend of rising first and then falling. The overall change trend of land use depletion in the mountainous area was consistent with that in the basin area, but the mountainous area was always higher than that in the basin area. 3) The land use change in mountainous areas and basin areas was mainly reflected in the difference of natural factors and socio-economic fators. The radiation and agglomeration functions of the basin area have always attracted people to migrate from the mountains to the basin, which was beneficial to the ecological restoration of the vegetation in the mountains. Since the mountainous area and the basin area are geographically adjacent, the coupling and coordination of the two is the premise and foundation for the sustainable development of the region. This causal relationship of land use changes provides a reliable basis for the regulation of mountain-basin human-land coupling relationship.

Accounting for Value Changes in Cultivated Land Resources within the Karst Mountain Area of Southwest China, 2001–2020

“…Among them, it reached a peak of CNY 7775.25 million in 2009, but the overall decrease was no more than 3%, indicating that the ecological function of the cultivated land resources in Guizhou Province is still well-protected while the economy is developing (Table 12). and steep sloped terraces, the conversion of all of which are examples of remarkable achievements [44,59]. At the same time, it is worth mentioning that on the premise of the obvious outflow of the physical account of the cultivated land resources, the output of agricultural products has still shown a huge increase [60,61].…”

Comparative Analysis of Temporal-Spatial Variation on Mountain-Flatland Landscape Pattern in Karst Mountainous Areas of Southwest China: A Case Study of Yuxi City

“…Due to the imbalance between social and economic development and the natural ecological process [1], as well as the instability, sensitivity and complexity of the natural system of the mountainous area itself, the mountainous area has become the most intense region of global environmental change and ecological degradation in recent years [2], and the conflicts between human and land have become more prominent and complex. In the southwest of China, the terrain is fragmented and sensitive, and the generalized mountain landscape is an important and unique natural-human geography unit composed of "mountain" and "flatland" as the core elements [3,4], which is an important content of the scientific research of human-land systems in mountainous areas. To fully guarantee the ecological security and sustainable development of mountainous areas, it is necessary to take land resources as the main constraint condition [5], coordinate the linkage relationship between "mountain" and "flatland" in the whole region, and study the changes and correlation of "mountain" and "flatland" elements in mountainous landscapes, in order to provide Land 2023, 12, 435 2 of 17 more scientific and accurate strategies for rural revitalization, mountain development, spatial governance, as well as the maintenance and improvement of ecosystem services.…”