Effects of climate variability and land use/land cover change on the Daihai wetland of central Inner Mongolia over the past decades

Xia, Chun-hong; Qin, Fuying; Zhou, Haijun; Dan, Dan; Xia, Yingying; Khukhuudei, Ulambadrakh

doi:10.1007/s11629-020-6108-1

Cited by 15 publications

(6 citation statements)

References 43 publications

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“…This scenario prioritizes food security but restricts economic development to some extent. Lastly, the EP scenario demonstrates a noteworthy decrease in cultivated land, while the total area of ecological land increases to 1197.87 km 2 . This indicates a shift towards preserving and expanding ecological resources, necessitating a reduction in cultivated land.…”

Section: Land Use Simulation Under Multiple Scenariosmentioning

confidence: 97%

“…Land is the foundation of human civilization and provides a habitat for various ecosystems. However, the development of human society has continuously impacted the functions and structures of land [1], such as modern urbanization, agricultural production methods, and industrialization efforts [2]. Land use change, which refers to changes in land use types and their proportions within a given spatial unit [3,4], can reflect dynamic changes in land cover influenced by natural environmental, economic, and social factors [5].…”

Section: Introductionmentioning

confidence: 99%

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Simulation and Analysis of Land Use Change in Jianghuai Hilly Area Based on PLUS Model

Xu,

Guo,

Jia

2023

Pol. J. Environ. Stud.

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The Jianghuai-Huai Hilly Region (JHHR), being a crucial agricultural and forestry hub within the Yangtze River Economic Belt, holds immense significance in investigating land use dynamics under diverse scenarios. Such exploration not only facilitates the sustainable utilization of land resources but also contributes to ecological environmental preservation and the advancement of regional economic and social development. This study aims to analyze the spatial and temporal characteristics and driving forces of land use in JHHR over the past three decades (1990-2020) using 18 driving factors selected from both the natural environment and social economy. We have considered four different scenarios, including Natural Development (ND), Rapid Development (RD), Cultivated Land Protection (CLP), and Ecological Protection (EP). We used the PLUS model to simulate land use changes in JHHR until 2040, and we analyzed the spatial distribution pattern of land under different objectives. The results show that: (1) The main types of land use in the Jianghuai hilly area are arable land and woodland. In the past 30 years, the land use changes have been relatively stable, the area of arable land and woodland has continued to decrease, and the construction land has continued to grow; unused land and grassland have the highest dynamic degree, with the highest comprehensive dynamic degree from 2000 to 2005, at 0.42%; (2) In 2020, the simulation accuracy of land use in different time spans is high, with a Kappa coefficient higher than 0.85 and an overall accuracy higher than 92%, both higher than the standard.(3) The main driving factors for land expansion from 1990 to 2020 were natural factors such as DEM and slope, and the driving forces for construction land mainly came from socio-economic factors.(4) There are obvious gaps in land use changes under different scenarios. A comprehensive comparison of the growth of other types of land use to varying degrees under the ecological protection scenario and under the protection of ecological land use can be used as the optimal development scenario model. The scenario simulation can provide an effective reference for the rational planning and management of land in the Jianghuai hilly area.

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Section: Land Use Simulation Under Multiple Scenariosmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Simulation and Analysis of Land Use Change in Jianghuai Hilly Area Based on PLUS Model

Xu,

Guo,

Jia

2023

Pol. J. Environ. Stud.

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“…The annual average wind speed was 2.6 m/s, and the maximum wind speed was up to 15 m/s. In recent decades, the semiarid climatic condition makes the precipitation of Daihai Basin a natural shortage, and then the anthropogenic-induced climate warming and agricultural activities make Daihai rapidly shrink (Liu et al, 2019;Chun et al, 2020).…”

Section: Study Areamentioning

confidence: 99%

Optical Stimulation Luminescence Dating of Deltas Revealed the Early to Mid-Holocene Lake-level Fluctuations of Daihai, Inner Mongolia, Northern China

Huang

Xia

2021

Front. Earth Sci.

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Lake-level reconstruction of inland enclosed lakes especially for monsoon-sensitive areas is of great significance to reveal regional climate changes. Daihai, a typical enclosed lake at the marginal of the East Asian summer monsoon (EASM) area in north China, is sensitive to climate changes due to its unique regional characteristics. There were a series of lakeshore terraces, highstand lacustrine sediments, and braided river deltas, providing sufficient geomorphologic and stratigraphic evidence for the reconstruction of lake-level fluctuations of Daihai. Reconstructed lake-level variations during the early and mid-Holocene were constructed based on 22 quartz optical stimulated luminescence (OSL) ages from six well-preserved profiles around Daihai Basin. Our results indicated Daihai showed a relatively low level at 10.2 ka, and a gradually increasing lake level following the enhanced monsoon precipitation during the mid-Holocene. Specifically, the high lake level began to develop at 8.1 ka and reached the maximum at 5.2 ka, with ∼40 m higher than present. At this time, the lake area expanded to ∼400 km2, approximately six times as large as that of present, corresponding to the maximum monsoon precipitation and intensity of EASM during the mid-Holocene. However, our stratigraphic records showed a part of the depositional records in the north and east of the Daihai was missed after 5.2 ka, probably indicating a sudden drop of the Daihai lake level. These rapid level fluctuations were likely to be interpreted by some local scenarios and need to be further investigated in the future. Overall, the lake-level fluctuation of Daihai during the early and mid-Holocene was slightly different from that observed in the previously published regional records. Possibly, the interaction of the EASM and regional feedback from topography, and hydrology factors might have contributed to the spatial complexity and distinction.

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“…Frequently, the transformation of wetlands is the consequence of the cumulative effects of many variables [16]. Generally, natural elements such as temperature, precipitation, and evaporation are regarded as internal driving forces [17]; however, human activities have gradually become the most influential component in wetland evolution [18].…”

Section: Introductionmentioning

confidence: 99%

The Main Drivers of Wetland Evolution in the Beijing-Tianjin-Hebei Plain

Yang

et al. 2023

Land

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Analysis of the driving mechanism of wetland change can help identify the spatial differences in the mechanisms of different elements in order to better scientifically prevent and utilize wetlands. The Beijing-Tianjin-Hebei Plain (BTHP) was selected as the study area, and the dynamic degree model and change intensity index were utilized to examine the spatial and temporal changes of wetlands based on four periods of land use data. After establishing a wetland change evaluation system that included topography, geology, meteorological, and human activities, we utilized a random forest model to study the driving mechanism of wetland change from 1990–2020. Based on the developed zoning map, we then offered specific protection policies. We have four major findings: (1) the wetlands reduced significantly in the BTHP and underwent a change process from decreasing to increasing, and reservoirs and rivers, particularly along the Bohai Rim, were the primary determinants of wetland changes; (2) the impact of topographic factors such as elevation showed a significant gradient effect, the impact of geological factors such as hydrogeological division was low and indirect, the impact of meteorological factors was nonlinear, and the impact of anthropic factors was most significant and showed clear spatial directivity; (3) the urban expansion and agricultural reclamation had significant dominant effects, coupled with the topographical effects of elevation and slope, the geological environmental effects of surface subsidence and hydrogeological division, and the cumulative effects of temperature and precipitation, which resulted in the spatial change of wetlands; and (4) protecting wetland integrity, dynamic monitoring, restricting human activities, and establishing wetland buffer zones should be applied to the general area, natural factors area, anthropic factors area, and significant comprehensive area, respectively.

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Effects of climate variability and land use/land cover change on the Daihai wetland of central Inner Mongolia over the past decades

Cited by 15 publications

References 43 publications

Simulation and Analysis of Land Use Change in Jianghuai Hilly Area Based on PLUS Model

Simulation and Analysis of Land Use Change in Jianghuai Hilly Area Based on PLUS Model

Optical Stimulation Luminescence Dating of Deltas Revealed the Early to Mid-Holocene Lake-level Fluctuations of Daihai, Inner Mongolia, Northern China

The Main Drivers of Wetland Evolution in the Beijing-Tianjin-Hebei Plain

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