The variation differences of cultivated land ecological security between flatland and mountainous areas based on LUCC

Wu, Li; Xie, Binggeng

doi:10.1371/journal.pone.0220747

Cited by 15 publications

(13 citation statements)

References 36 publications

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“…Similar findings have been attained in the Pearl River delta [42] ( Li et al, 2020). Some case studies have also focused on the city level, such as [43] in Yuxi in Yunnan, revealing that flat cropland appears to have lower ecological security than mountainous cropland due to urban expansion. In line with these findings, our results suggest a higher proportion of changes in ecological security around urban areas, especially capital cities such as in Hunan, Hubei, Jiangxi and Anhui.…”

Section: Evaluation Of Ecological Security With the Cvor Frameworkmentioning

confidence: 99%

Impact of Cropland Reclamation on Ecological Security in the Yangtze River Economic Belt, China

Yin¹,

Zhou

2021

Sustainability

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Ecological security is important both for maintaining the function of an ecosystem and for providing ecosystem services to the human wellbeing. The impact of land use change/cover on ecological security has attracted considerable attention, whereas the role of cropland reclamation remains unclear. The indirect loss of ecological land that occurs upon the request of cropland requisition-compensation policies offer further changes to ecological security. In order to ascertain the impact of cropland reclamation on ecological security, in this study three scenarios are established, addressing cropland returning to ecological lands without a slope limitation, with a slope <25°, and with a reclaimed cropland slope ≥25°. This study was conducted in the Yangtze River economic belt (YREB) due to its important contribution to ecological security in China. Land uses in different scenarios in 2030 are projected using the land use simulation model LANDSCAPE. Accordingly, ecological security in each scenario was evaluated using the contribution–vigour–organization–resilience framework, comprising the variables carbon storage, water purification, water yield, habitat quality, net primary productivity, mean patch area, Shannon’s diversity index, largest patch index and contagion, as well as the normalized difference vegetation index. The results indicate that about 62% of YREB land is projected to remain stable in terms of ecological security, while about 21% will deteriorate and 17% will improve between 2015–2030. Land where ecological security is projected to improve is concentrated in areas where broad and connected croplands are distributed. The fact that a higher proportion of areas will deteriorate than improve suggests that the negative impact of cropland change on ecological security should not be ignored. Comparing different scenarios, croplands returning to ecological lands pose a particularly significant impact on ecological security, particularly in the upper reaches of the YREB, where steep croplands are concentrated.

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Section: Evaluation Of Ecological Security With the Cvor Frameworkmentioning

confidence: 99%

Impact of Cropland Reclamation on Ecological Security in the Yangtze River Economic Belt, China

Yin¹,

Zhou

2021

Sustainability

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“…This study believes that this is not only the result of the formation of different geographical patterns, but also the driving factors for further development of geographical pattern differences. At the same time, the different land use structure and change characteristics of the mountainous area and the basin area are closely related to the local natural environment, social and economic factors (Wu and Xie, 2019). One of the biggest inspirations of this research process is that geography, on the basis of being divided into three branches: physical geography, human geography and information geography, has once again moved towards synthesis in the field of human-earth system research (Fan, 2018).…”

Section: Discussionmentioning

confidence: 99%

“…Yuxi City is located in the mountainous area of southwest China, with typical mountain-basin landform characteristics (Wu and Xie, 2019). The basin area is flat, suitable for farming and construction, and is an important carrier of human economic activities, while the natural conditions in the mountainous area are complex and difficult to use (Meybeck et al, 2001;Li et al, 2014;Liu and Li, 2020).…”

Section: Introductionmentioning

confidence: 99%

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

Zhou

Xie

et al. 2022

Front. Environ. Sci.

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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.

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“…The western part is mainly deep-cut alpine and valley landforms, the central and eastern parts belong to the mountainous areas of central Yunnan and are dominated by mid-mountain landforms, and the eastern part is mainly plateau lake basin landforms. The Chengjiang, Jiangchuan and Tonghai lacustrine basins are formed around three plateau rifted lakes, the Fuxian Lake, Xingyun Lake and Qilu Lake, with flat and open terrain [45]. According to its special topography, combined with administrative regions, it can be divided into two types of geographical spaces: mountainous areas and basin areas [44].…”

Section: Study Areamentioning

confidence: 99%

“…With the migration of the population from mountainous areas to basin areas, the agglomeration of the population leads to the occupation of agricultural land and the expansion of urban land [45,48]. Early on, due to the limited population, the urbanization level is not high, and coupled with the influence of the policy constrains, the migration of the population is also rare.…”

Section: Coupling Spatiotemporal Parameters Of Mountain-basin Human-l...mentioning

confidence: 99%

Modeling Analysis on Coupling Mechanisms of Mountain–Basin Human–Land Systems: Take Yuxi City as an Example

Yang

Xie

2022

Land

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The result of a human–land relationship in geographical environment systems is a human–land coupling system, which is a comprehensive process of interaction and infiltration between human economic and social systems and the natural ecosystem. Based on the recognition that the human–land system is a nonlinear system coupled by multiple factors, a time delay fractional order dynamics model with a Holling-II-type transformation rate was constructed, the stability analysis of the system was carried out, the transformation times of different land classes were clarified, and the coupled dynamics model parameters of mountainous areas and basin areas were obtained by using the land-use change survey data and socio-economic statistical data in Yuxi City, respectively: the transformation parameter of the production and living land to the unused land in mountainous areas and basin areas (aM, 0.0486 and aB, 0.0126); the transformation parameter of unused land to production and living land in mountainous areas and basin areas (bM 0.0062 and bB, 0.0139); the transformation parameter of unused land to the forest and grass land in mountainous areas and basin areas (sM, 0.0051 and sB, 0.0028); the land area required to maintain the individual unit in mountainous areas and basin areas (hM, 0.0335 and hB, 0.0165); the average reclamation capacity in mountainous areas and basin areas (dM, 0.03 and dB, 0.05); the inherent growth rate of populations in mountainous areas and basin areas (rM, 0.0563 and rB, 0.151). Through analyzing the coupling mechanisms of human–land systems, the countermeasures for the difference between mountainous areas and basin areas in the future development are put forward. The mountainous area should reduce the conversion of forest and grass land to production and living land by reducing the average reclamation or development capacity, reducing the excessive interference of human beings on unused land, and speeding up its natural recovery and succession to forest and grass land. In addition to reducing the average reclamation or development capacity in basin areas, the reclamation or development rate of the idle land and degraded land should be increased, and the conversion of idle land and degraded land into productive and living land should be encouraged by certain scientific and technological means.

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The variation differences of cultivated land ecological security between flatland and mountainous areas based on LUCC

Cited by 15 publications

References 36 publications

Impact of Cropland Reclamation on Ecological Security in the Yangtze River Economic Belt, China

Impact of Cropland Reclamation on Ecological Security in the Yangtze River Economic Belt, China

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

Modeling Analysis on Coupling Mechanisms of Mountain–Basin Human–Land Systems: Take Yuxi City as an Example

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