期刊：
Landscape and Urban Planning,2024年241:104924 ISSN：0169-2046
通讯作者：
Xiao, CW
作者机构：
[Wang, Yi; Xiao, Chiwei; Xiao, CW; Yan, Mingyan; Chiaka, Jeffrey Chiwuikem] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, 11A Datun Rd, Beijing, Peoples R China.;[Wang, Yi; Xiao, Chiwei; Xiao, CW] Univ Chinese Acad Sci, Coll Resources & Environm, 1 Yanqihu East Rd, Beijing, Peoples R China.;[Wang, Yi; Yan, Mingyan] Cent China Normal Univ, Coll Publ Adm, 382 Luoyu Rd, Wuhan, Peoples R China.;[Chiaka, Jeffrey Chiwuikem] Beijing Normal Univ, Sch Environm, 19 Xinjiekou, Beijing, Peoples R China.
通讯机构：
[Xiao, CW ] C;Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, 11A Datun Rd, Beijing, Peoples R China.;Univ Chinese Acad Sci, Coll Resources & Environm, 1 Yanqihu East Rd, Beijing, Peoples R China.
关键词：
Land -use change;Landscape pattern;Geo-economic cooperation;Cross-border transportation corridors;China -Laos Railway
摘要：
Regional integration initiatives have triggered impacts on land use changes (LUC) and landscape patterns through geo-economic cooperation like cross-border infrastructure, which are often presented, but comprehensive studies on the extent and degree remains insufficient. The China-Laos Railway (CLR), a cross-border transportation corridor connecting Kunming in China with the Laotian capital, Vientiane, which was launched in December 2016 and operation started in December 2021, has recently witnessed rapid and notable changes in landscape and land use. This case study provides a distinctive opportunity to evaluate the relative significance of political and socioeconomic factors on LUC and landscape patterns. In this study, we integrate 10-m land-use data products (2017–2022) provided by Environmental Systems Research Institute, Inc (ESRI) with geospatial analysis to quantify and compare the impacts of cross-border transportation corridors on LUC within a 10 km buffer area along the CLR. The results showed that since 2017, about 3 % deforestation caused by the expansion of cropland (8 %) and construction land (38 %) along the CLR. The comprehensive dynamic degree along the CLR displays two peaks, appearing within the 2–4 km and 8–10 km buffer zones. Interestingly, the fragmentation of land patches within the buffer zone decreases as the distance from the CLR increases. Moreover, the construction of the CLR has a greater impact on the Laotian side, while its completion and operation triggered more significant changes on the Chinese side. The study quantitatively assesses the extent, type, and intensity of the impacts of cross-border transportation corridors on LUC and landscape patterns.
摘要：
Understanding the formation process and pattern of production-living-ecological spaces (PLES) is crucial for sustainable land-use management and adaptive city governance. However, previous studies have neglected the symbiotic relationships between land-use functions (LUFs) in identifying and optimizing PLES. To address this gap, this paper proposes a technical framework for assessing PLES from a LUF symbiosis perspective. A case study was conducted in Xiangyang City, China, to identify PLES and analyze its urban-rural differentiation using the symbiosis degree model and landscape pattern indices. Our findings revealed that the symbiotic relationships between LUFs varied. There were 25 combination types of PLES in Xiangyang City, with significantly varied area proportions and spatial distribution. The landscape types and fragmentation of PLES increased along with the gradient change from the old urban area to the rural area. Furthermore, we proposed a PLES optimization strategy involving LUFs symbiosis and the urban-rural gradient. Our study enriches the dimensions of PLES assessment and supports better-coordinated planning and the protection of PLES.
摘要：
Cropland displacement, as an important characteristic of cropland change, places more emphasis on changes in spatial location than on quantity. The effects of cropland displacement on global and regional food production are of general concern in the context of urban expansion. Few studies have explored scale-effects, however, where cropland is displaced not only within, but also outside, the administrative boundary of a certain region. This study used a spatially explicit model (LANDSCAPE) to simulate the potential cropland displacement caused by urban land expansion from 2020 to 2040 at four scales of the Chinese administration system (national, provincial, municipal, and county levels). The corresponding changes in potential cereal production were then assessed by combining cereal productivity data. The results show that 4700 km(2) of cropland will be occupied by urban expansion by 2040, and the same amount of cropland will be supplemented by forest, grassland, wetland, and unused land. The potential loss of cropland will result in the loss of 3.838x10(6) tons of cereal production, and the additional cropland will bring 3.546x10(6) tons, 3.831x10(6) tons, 3.836x10(6) tons, and 3.528x10(6) tons of potential cereal production in SN (national scale), SP (provincial scale), SM (municipal scale), and SC (county scale), respectively. Both SN and SC are observed to make a huge difference in cereal productivity between the lost and the supplemented cropland. We suggest that China should focus on the spatial allocation of cropland during large-scale displacement, especially at the national level.
作者：
Ji, Zhengxin;Liu, Chao;Xu, Yueqing;Sun, Minxuan;Wei, Hejie;...
期刊：
地理学报：英文版,2023年33(4):779-800 ISSN：1009-637X
通讯作者：
Xu, YQ
作者机构：
[Xu, YQ; Sun, Minxuan; Xu, Yueqing; Li, Yaoyao; Sun, Qiangqiang; Sun, Danfeng; Ji, Zhengxin; Zhang, Ping] China Agr Univ, Coll Land Sci & Technol, Beijing 100193, Peoples R China.;[Xu, YQ; Sun, Minxuan; Xu, Yueqing; Li, Yaoyao; Sun, Qiangqiang; Sun, Danfeng; Ji, Zhengxin; Zhang, Ping] Minist Nat Resources, Key Lab Agr Land Qual, Beijing 100193, Peoples R China.;[Liu, Chao] Cent China Normal Univ, Coll Publ Adm, Wuhan 430079, Peoples R China.;[Wei, Hejie] Henan Agr Univ, Coll Resources & Environm Sci, Zhengzhou 450002, Peoples R China.
通讯机构：
[Xu, YQ ] C;China Agr Univ, Coll Land Sci & Technol, Beijing 100193, Peoples R China.;Minist Nat Resources, Key Lab Agr Land Qual, Beijing 100193, Peoples R China.
关键词：
land use function;value evaluation;production-living-ecological space;spatial and temporal variation;Zhangjiakou
摘要：
Developed here is an integrated framework for identifying production-living-ecological space (PLES) quantitatively at grid scale from the perspective of multifunction land use, and 25 compound space types are classified to highlight the multiple functions of PLES. As a typical mountainous city in northern Hebei province, Zhangjiakou is used as a case study, and the results show that more than 80% of the land space in Zhangjiakou has remarkable triple functionality. The living-dominated space and the production-dominated space are distributed mainly in the valleys of the Yanghe, Sanggan, and Huliu rivers and have obvious spatial consistency, while the ecological-dominated space is concentrated mostly at the eastern Yanshan Mountains and southern Taihang Mountains and complements the other two types of space. The former two are spatially fragmented, while the latter has been expanding to the periphery over time. From 1990 to 2015, the ecological-dominated space has increased the most by 1555.02 km(2), while the living-dominated space has increased the least by 816.79 km(2). The types of PLES are more diverse in the medium and low mountains and the areas with gentle slope, and the influencing factors include natural ecological environment, socioeconomic development, human consumption demand, and institutional policies. Therefore, these findings can mitigate conflicts among PLES in mountainous and similar areas, and promote the balanced development of land space.
期刊：
Journal of Cleaner Production,2023年396:136464 ISSN：0959-6526
通讯作者：
Jia Li<&wdkj&>Limin Jiao
作者机构：
[Li, Jia; Jiao, Limin] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China.;[Jiao, Limin] Wuhan Univ, Key Lab Geog Informat Syst, Minist Educ, Wuhan 430079, Peoples R China.;[Li, Fenghang] Wuhan Univ, Dong Fureng Inst Econ & Social Dev, Wuhan 430072, Hubei, Peoples R China.;[Lu, Xinhai; Li, Runpeng] Cent China Normal Univ, Coll Publ Adm, Wuhan 430079, Peoples R China.;[Hou, Jiao] Wuhan Polytech Univ, Coll Management, Wuhan 430023, Peoples R China.
通讯机构：
[Jia Li; Limin Jiao] S;School of Resource and Environmental Sciences, Wuhan University, Wuhan, 430079, China<&wdkj&>Key Laboratory of Geographic Information System, Ministry of Education, Wuhan University, Wuhan, 430079, China<&wdkj&>School of Resource and Environmental Sciences, Wuhan University, Wuhan, 430079, China
关键词：
Construction land;Carbon emissions;Spatial disequilibrium;Spatial panel quantile regression
摘要：
Revealing the spatial disequilibrium and influencing factors of carbon emission intensity of construction land (CEICL) is of great significance for improving the sustainable utilization of urban land, and helping to achieve global green and low-carbon development. This study estimates the CEICL of 285 cities in China from 2008 to 2019. Then, this paper analyzes the spatial disequilibrium of CEICL, and discusses the spatial heterogeneity of the influencing factors at different levels of CEICL. The results show that the CEICL has an inverted “U-shape”, increasing first and decreasing later, with most cities concentrating on 0.3 million tons/km2 and some cities breaking through 3 million tons/km2. Also, the results imply a relatively large gap in CEICL among cities, despite a gradually narrowing trend of this gap. Among regions, the average annual difference of CEICL is about 0.1–0.4 million tons/km2 for cities of the same scale. Within regions, CEICL decreases with increasing city scale, and the agglomeration characteristics of high-high and low-low values within regions are significant and stable, and the spatial lock-in effect is strong. Moreover, the results infer a negative spatial spillover effect in CEICL in China, and the significant spatial heterogeneity effect of the seven factors (i.e., population agglomeration intensity, industrial structure upgrading, land development intensity, land investment intensity, economic output level, technological R&D and innovation, and ecological resource endowment) on CEICL in cities of different regions and scales. This study provides a scientific basis and empirical support for developing differentiated and feasible carbon reduction policies based on cities' own characteristics.
摘要：
Previous studies have suggested that childhood socioeconomic status (SES) is linked to geriatric depressive symptoms in many developed countries. However, the potential pathways of the relationship between childhood SES and geriatric depressive symptoms need to be further explored. This study aimed to assess the mediating effect of being abused during childhood on the association between childhood SES and geriatric depressive symptoms, using evidence from a longitudinal study in China. The study cohort included 8137 individuals. Childhood abuse was defined as experiences related to parental violence, sibling abuse, school violence, community violence, and parental quarrel. Results indicated poor childhood SES was associated significantly with geriatric depressive symptoms. The indirect effect of poor childhood SES to high geriatric depressive risk through community violence, sibling abuse, school violence, and parental quarrel were 0.02, 0.01, 0.02, and 0.01, respectively. Our findings shed new light on the literature regarding the impact of childhood SES on elderly depressive symptoms. Furthermore, childhood SES demonstrated a significant correlation with geriatric depressive symptoms through bullying behaviors. The findings highlight the need to promote both childhood social welfare and psychological well-being within the elderly population.
期刊：
International Journal of Environmental Research and Public Health,2023年20(1):818- ISSN：1661-7827
通讯作者：
Gui Jin
作者机构：
[Qin, Jingjing; Luo, Xiang] Cent China Normal Univ, Coll Publ Adm, Wuhan 430079, Peoples R China.;[Wan, Qing] Wuhan Inst Technol, Sch Management, Wuhan 430025, Peoples R China.;[Jin, Gui] China Univ Geosci, Sch Econ & Management, Wuhan 430078, Peoples R China.
通讯机构：
[Gui Jin] S;School of Economics and Management, China University of Geosciences, Wuhan 430078, China<&wdkj&>Author to whom correspondence should be addressed.
关键词：
HDI;Bayesian estimation;spatial spillover
摘要：
The development of urban agglomerations dominated by the service industry is an important driving force for further sustainable economic growth of China. Spatial analysis marked by population density and regional integration is an essential perspective for studying the human development index (HDI) in China. Based on Bayesian estimation, this paper examines the influence of a spatial factor on HDI by using a spatial hierarchical factor model within the framework of Sen Capability Approach theory, overcoming the neglect of spatial factors and their equal weight in traditional measurement of HDI. On this basis, the HDI including the spatial factor was measured based on the panel data from 2000 to 2018. The results reveal that (1) provinces with high population densities and regional integration have higher rankings and low uncertainties of HDI, which can be attributed to the improvement of education weights; (2) HDI has a certain spatial spillover effect, and the spatial association increases year by year; (3) robust test by using nighttime lighting as an alternative indicator of GDP supports that the spatial correlation is positively related to HDI ranking. The policy recommendations of this paper are to remove the obstacles for cross-regional population mobility and adjust the direction and structure of public expenditure.
作者机构：
[Yang, Qingke; Li, Ying; Fan, Yeting; Ding, Linlin] Nanjing Univ Finance & Econ, Sch Publ Adm, Nanjing 210023, Peoples R China.;[Yang, Qingke] Minist Nat Resources, Key Lab Coastal Zone Exploitat & Protect, Nanjing 210017, Peoples R China.;[Wang, Yazhu; Wang, Lei] Chinese Acad Sci, Nanjing Inst Geog & Limnol, Key Lab Watershed Geog Sci, Nanjing 210008, Peoples R China.;[Liu, Chao; Liu, C] Cent China Normal Univ, Coll Publ Adm, Fac Polit Sci, Wuhan 430079, Peoples R China.
通讯机构：
[Liu, C ] C;Cent China Normal Univ, Coll Publ Adm, Fac Polit Sci, Wuhan 430079, Peoples R China.
关键词：
urban land use efficiency (ULUE);new-type urbanization (NTU);impact mechanism;Yangtze River Delta;China
摘要：
Rapid urbanization in China has led to inefficient use of urban land and spatial structure disorder, attracting attention from academia and society. Taking the Yangtze River Delta, China as an example, this study constructed an index evaluation system that quantitatively analyses the impact of new-type urbanization (NTU) on urban land use efficiency (ULUE) from 2000 to 2020 using a panel data vector autoregressive model. The results show that NTU in the Yangtze River Delta promotes ULUE improvement. However, the promotion of NTU to ULUE is limited, and the level of urban economic development also plays a role in promoting the change of ULUE. Moreover, the study further analyzed the results of urbanization decomposition and found that population urbanization (PU), economic urbanization (EU), spatial urbanization (SU), and social urbanization (SCU) can explain changes in ULUE in the Yangtze River Delta to a certain extent. In terms of variance decomposition, PU contributed the most to ULUE, followed by EU, SU, and SCU. Some necessary measures should be taken to coordinate the development of different types of urbanization, improve the sustainable utilization level of land resources, and provide a reference for high-quality development in the Yangtze River Delta.
