Region Of Inner Mongolia Research Articles

Semantic Web-Based Structural Equation Modeling and Mediating Effects Are Used to Investigate Key Factors

Land desertification is the key contradiction restricting the sustainable development of Chinese society. Farmers and herders' behavior in desert management is particularly important for the smooth development of the desertification control project. Although farmers and herders express willingness, they do not engage in desert management behavior. The research through random sampling survey analyzes survey data from 572 farmers and herders in the Kubuqi Desert region of Inner Mongolia using structural equation modeling and mediation analysis, based on the TPB. The aim is to understand the paradoxical willingness and behavior of farmers and herders to participate in desert management. The study found that farmers and herders' willingness to participate is a crucial factor that influences their behavior. The authors suggest cultivating a sense of ecological responsibility and strengthening ecological education to guide the behavior of farmers and herders towards more sustainable practices.

Evaluation of net carbon sequestration and ecological benefits from single biochar-incorporated sorghum farmland systems in saline-alkali areas of Inner Mongolia, China

Biochar is widely recognized as a soil amendment to reduce greenhouse gas emissions and enhance soil carbon storage in agroecosystems; however, the systematic focus on carbon balance and ecological benefits in cropping systems remains unclear in saline-alkali areas under water-saving irrigation. Here, a 2-yr field experiment with carbon footprint method was conducted to determine soil carbon budgets, biochar carbon efficiency performance, and the economic and ecological benefits of mulched drip-irrigated sorghum production, in an arid salinized region of Inner Mongolia, China. Corn straw-derived biochar dosages of 0 (CK), 15 (B15), 30 (B30), and 45 (B45) t hm−2 were just applied into the soil in the first crop growing season. A single application of biochar to soil significantly reduced CO2 emissions for the current and subsequent crop-growing seasons, with 13.1%, 16.7%, and 12.5% reductions for B15, B30, and B45, respectively. Compared with the non-biochar control plots, B15, B30, and B45 also increased NPP by 36.7%, 38.4%, and 27.1%, respectively. The actual effects on improving net carbon sequestration for B15, B30, and B45 in the first year were higher than those in the second year, with mean increases of 1.27, 1.47, and 1.36 times, respectively; however, the efficiencies of biochar for fixing carbon per biochar dosage input for B15 were 72.8% and 64.1% higher than those of B30 and B45, respectively. Net profits were significantly improved by 57.2–87.1% by biochar treatments. The environmental benefits of biochar carbon trading revenues for B15, B30, and B45 increased by 105.9%, 162.1%, and 109.6%, respectively. The minimum observation for carbon productivity and the maximum measurements for both the economic and ecological benefits were B15. The B15 also significantly increased sorghum yield and grain number. Results demonstrate that biochar application in the current growing season helps reduce soil carbon emissions, increases net carbon sequestration for current and subsequent sorghum agroecosystems, and enhances net profit and ecological benefits. The optimal positive synergistic effect was observed at a biochar application rate of 15 t hm−2 for reducing soil carbon emissions, increasing crop production, and improving the ecological environment.

First complete mitochondrial genome of the Alashan ground squirrel (Spermophilus alashanicus) (Rodentia: Sciuridae) from Ningxia, China

The Alashan ground squirrel (Spermophilus alashanicus) is primarily distributed in the regions of Inner Mongolia and Ningxia, China. In this study, we present the first complete mitochondrial genome of S. alashanicus. The genome spans 16,464 base pairs and comprises 13 protein-coding genes, 22 tRNA genes, two rRNA genes, and a single control region with a marked AT bias. The overall GC content is 35.4%. Phylogenetic analyses indicate that S. alashanicus clusters are closely associated with S. dauricus. This comprehensive characterization of the S. alashanicus mitochondrial genome serves as a foundational resource for future studies on mitochondrial evolution, species identification, population genomics, and phylogenetics.

Multi-faceted analysis of dust storm from satellite imagery, ground station, and model simulations, a study in China

An intense dust storm from 8 April to 11 April 2023 originated from the Gobi deserts bordering Mongolia and Inner Mongolia of China and affected most parts of northern, central, and eastern China, the Korean Peninsula, and Japan. It has a significant impact on air quality in these regions and alters the optical and microphysical properties of the aerosols. In this work, a comprehensive analysis of the storm was carried out by using reanalysis data, model simulation, satellite, and ground-based observations. The geopotential height along with the wind flow reveals that the development, transportation, and dissipation of the dust storms were closely related to the movement of the Mongolia cyclones caused by Mongolia low and its surrounding highs. The Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) data showed a two-layer dust vertical distribution, with the bottom one below 5 km and the upper one stretching from 5 to 10 km over the Japan Sea. The Hybrid Single-Particle Lagrangian Integrated Trajectory model (HYSPLIT) backward trajectory uncovered Central Mongolia being the origin of the dust storm that arrived over the Japan Sea on April 9, 2022, and the forward trajectory revealed that the dust aerosols would be further transported to the Pacific Ocean. Air quality analysis demonstrated that the regions of inner Mongolia (IMG) and Jing-Jin-Ji (JJJ) suffered the most from the dust storm events, followed by the Yangtze River Delta (YRD), while the Pearl River Delta (PRD) was hardly affected, as indicated by the regional-averaged PM10 and PM2.5. It was also found that the dust storm event has almost no significant influence on the other air quality indicators including CO, NO2, O3, and SO2. Historical record tracking revealed that the springtime averaged PM10 and PM2.5 of the year 2023 are comparable to those in 2021 which has the record-breaking dust storm case. AERONET data indicated dramatic increments of aerosol optical depth at 550 nm (AOD550) and effective radius of total size (ReffT) in regions of Gobi and JJJ, accompanied by low Angstrom Exponent (AE), and high SSA870 values, while in the regions of Korea and Japan, minor increments of AOD550 and ReffT were found. This study provides a holistic scientific view of the dust storm which could aid in the implementation of protective measures against dust storms.

Five-dimensional assessment of China's centralized and distributed photovoltaic potential: From solar irradiation to CO2 mitigation

Owing to China's escalating demand for renewable energy and carbon emissions reduction, and given its prominent position as one of the fastest-growing nations in photovoltaic (PV) development, a comprehensive assessment of the potential of both centralized and distributed photovoltaic systems in China is crucial. However, current research on PV potential assessment presents several challenges. Therefore, this study presents a five-dimensional assessment model, encompassing geographical, technical, economic, CO2 mitigation, and realizable potential, to systematically map China's centralized photovoltaic (CPV) and distributed photovoltaic (DPV) potential. The findings underscore the vast PV potential across the country, with areas of 3.11 million km2 and 252.72 thousand km2 deemed suitable for CPV and DPV development, respectively. This corresponds to a technical potential of 416,383.27 and 28,261.53 TWh/yr for CPV and DPV, respectively. Furthermore, this study explored the economic potential of CPV and DPV, revealing that the generation costs of both CPV and DPV in China are in proximity to the feed-in tariffs. With technological advancements and economies of scale, a broader PV potential is projected to be economically feasible by 2030. Full implementation of the current economic potential can yield an annual CO2 mitigation of 54.20 and 8.39 gigatonnes (Gt) using CPV and DPV, respectively. Notably, China's PV potential exhibits distinct regional heterogeneity, with CPV potential concentrated primarily in the western region and DPV potential distributed predominantly across the eastern provinces. This study identified the most resource-intensive areas in the western region of Inner Mongolia for CPV and in the coastal regions of Guangdong and Shandong provinces for DPV. Considering policy imperatives and the development status, China's PV sector holds tremendous potential to significantly contribute to carbon reduction targets. Based on the findings, policy recommendations are proposed, emphasizing the imperative of jointly developing CPV and DPV systems, as well as implementing phased and planned growth strategies for PV growth.

Light grazing intensity enhances ecosystem services in semi-arid grasslands through plant trait associations

Grasslands provide multiple ecosystem services (ESs) including provisioning, regulating, supporting, and cultural services that are largely affected by livestock grazing. Linking plant functional traits (PFTs) to ecosystem processes and functions has attracted extensive ecological research to explore the responses and inter-relations of ecosystem services to environmental and management changes. However, little information is available on the links between PFTs and ESs in most ecosystems. We conducted a grazing experiment to investigate the response of PFTs at different levels, including in plant organs (leaves and stems), individual plants, and the overall community in a typical steppe region of Inner Mongolia. Additionally, we examined the effect of animal grazing at four intensities (nil, light, moderate, and heavy) and explored the dynamic interconnections between PFTs and ecosystem services in grasslands. Our analysis revealed that the highest total ecosystem service and provisioning service were achieved under light- and moderate-grazing treatments, respectively. Heavy grazing also increased provisioning service but with a large decline in regulating and total ecosystem services. These changes in ESs were closely associated with grazing-induced variations in PFTs. Compared to no grazing, light grazing increased plant size-related functional traits, such as height, leaf length, leaf area, stem length, and the ratio of stem length to diameter. In contrast, heavy grazing decreased these PFTs. Provisioning and regulating services were determined by plant above-ground community function and structural properties, while supporting service was jointly affected by the below-ground community and soil properties. Our results indicate that light grazing should be recommended for the best total ESs, although moderate grazing may lead to high short-term economic benefits. Moreover, PFTs are powerful indicators for provisioning and regulating services. These findings provide a valuable reference for developing effective management practices to achieve targeted ESs using PFTs as indicators.

Loss and conservation of soil organic carbon and nutrients in arid and semiarid China during aeolian dust emissions

In this study, based on the application of the integrated wind erosion modeling system (IWEMS), we comprehensively simulated the loss and conservation of soil organic carbon (SOC), total nitrogen (TN), total phosphorus (TP), and total potassium (TK) during aeolian dust emissions over 2001–2020 in the arid and semiarid areas of China (ASAC). It was found that the past two decades witnessed decreasing trends in nutrient losses over the central-eastern region of Inner Mongolia, most parts of Qinghai Province, the southern part of the Xinjiang Autonomous Region, and the northwestern part of the Tibet Autonomous Region. The results, being model-based estimates, showed that the ecosystems of the ASAC were crucial in preventing annual losses of SOC, TN, TP and TK: approximately 27318.25 Gg, 2311.18 Gg, 1077.28 Gg and 35780.10 Gg, respectively. Both the losses and conservation of SOC, TN, TP and TK were consistently greater in spring and winter than in summer and autumn. The losses of SOC and nutrients during aeolian dust emissions were more serious in the west of the ASAC than in the east, both in the actual situation and the potential degenerative status. The prevention rates of SOC, TN, TP and TK for different land cover types were all greater than 92%. Comparatively speaking, the prevention rates of SOC, TN, TP and TK were the lowest for barren or sparsely vegetated land (∼92.85%−93.12%), open shrublands (∼95.65%−96.10%) and grasslands (∼98.44%−98.50%). For other land cover types, the prevention rates of SOC, TN, TP and TK were all over 99.62%.

Identification of Fusarium solani f. sp. cucurbitae Causing Zucchini Fruit Rot in Inner Mongolia, China

Fruit rot is one of the major diseases impacting the production and quality of zucchini (Cucurbita pepo). In August 2021, fruit rot symptoms were observed on the zucchini fruit ‘Jindi 1’ in the Wuyuan region in Inner Mongolia, China with an incidence ranging from 10% to 30%. Where the pepo was in contact with the soil, dark grey and spongy corky lesions 4–5 cm in diameter with a light brown halo were observed. The internal necrosis of the fruit rind was also recorded. From the affected fruits, fungal colonies belonging to the Fusarium species were exclusively isolated. Molecular analysis of the ITS, TEF-1α, and RPB2 sequences identified the isolates as Fusarium solani f. sp. cucurbitae. Inoculated on ‘Jindi 1’, the strain Fx-1a induced typical fruit rot on the pepo and wilting on seedlings, while negative-controls remained asymptomatic. The impact of this disease on seed quality and yield in zucchini seed production needs to be further studied.

Quantitative analysis of spatiotemporal changes and driving forces of vegetation net primary productivity (NPP) in the Qimeng region of Inner Mongolia

Vegetation is an essential component of terrestrial ecosystems, and understanding the drivers of vegetation change is of great importance for ecological management. In recent years, vegetation growth has increased under the combined effect of global warming and human activities in Inner Mongolia. The net primary productivity (NPP) was used as an indicator to study the spatial and temporal changes in vegetation in the Qimeng Region (QR). The residual trend analysis method was used to analyze the relative contributions of climate variations (CV) and human activities (HA) to NPP changes across the QR, while their drivers were explored using a geographical detector approach to quantify the driving forces of NPP. The results show that (1) NPP exhibited a fluctuating growth trend from 2003 to 2020, with an overall growth rate of 2.91%/year. (2) Precipitation, GDP and population density were the dominant driving factors for the spatial distribution of NPP. The combined explanatory power of any two dominant factors exceeded the power of any dominant individual factor, and the interaction between climate and human factors had a significant effect on NPP. (3) The change in NPP was influenced by the combined effect of HA and CV, accounting for 37.69% of the total area, with the relative contribution of HA being 51.75%. Finally, the relative contribution of human activities was slightly higher than that of climate change, confirming the initial success of the Grain to Green Program as well as ecological conservation projects. This paper provides a scientific basis for the local government to carry out the conversion of cropland to forest.

Study on properties of graphene-SBS double-modified asphalt

In this paper, different proportions of graphene modifiers were used to double-modify the SBS-modified asphalt. The needle penetration, softening point, and ductility of modified asphalt with different proportions of graphene incorporation were measured by the national standard test method. As affected by adding different proportions of graphene on the three indexes of SBS modified asphalt was studied. Through the analysis and comparison of the experimental results, when the graphene parameter is 0.5%, the performance of graphene-SBS double-modified asphalt reaches the optimum, which provides technical reference for the diversification of modified asphalt materials in the alpine region of Inner Mongolia.

Collaborative governance in strong state settings: perceived voluntariness and the role of the state in Rural China

ABSTRACT Can collaborative governance as understood through Western scholarship be enacted in strong state settings? We explore the perceived nature of voluntary participation and the role of the state in long-standing local efforts at cross-sector collaboration in grassland management in China’s autonomous region of Inner Mongolia. We find that collaborative governance appears to be enacted but with variable levels of collaboration and with limited voluntary participation. We also find that the state plays multiple roles in collaboration governance, some coercive while others enabling of performance and that when voluntary participation is present, it raises levels of collaboration and performance outcomes.

Microbial Community and Fermentation Quality of Alfalfa Silage Stored in Farm Bunker Silos in Inner Mongolia, China

Alfalfa is conserved in silo-type bunkers in the cold and humid regions of Inner Mongolia, China. Its quality is essential to ensure a healthy and sustainable dairy production. However, the impact of environmental factors on the microbiota and fermentation products of alfalfa silage remains unclear. The present research examined changes in the microbiota and fermentation products and their association with environmental parameters in 72 samples collected from 12 farms located at 4 different latitudes and longitudes across four regions. The samples were labeled with distinct codes, A, B, and C, from the cold–rainy region, D, E, and F, from the warm–rainy region, G, H, and I from the cold–dry region, and J, K, and L from the warm–dry region. The lactic acid levels ranged from 14.25 to 24.27 g/kg of DM across all samples. The pH and concentrations of NH3-N and butyric acid in samples A, B, and H were higher (p < 0.01) than in the other samples. Samples D and E had higher acetic acid concentrations and 1, 2-propanediol content (p < 0.01). The fresh material was dominated by Pantoea and Pseudomonas, whereas Lactobacillus was the most dominant genus in all silages, except for the B silage. The A, B, and H silages contained more Clostridium but less Lactobacillus than the other silages. The lactic acid levels were strongly associated with Lactobacillus plantarum, Weissella paramesenteroides, Lactobacillus acetotolerans, Pedobacter borvungensis, and Lactobacillus brevis (p < 0.01). In contrast, the pH and the NH3-N and butyric acid concentrations were strongly associated (p < 0.01) with the presence of Clostridium estertheticum. A correlation analysis revealed that precipitation, temperature, longitude, and latitude were the most critical factors influencing epiphytic microbes in the fresh material. After silage fermentation, low-temperature conditions significantly affected the fermentation products and microbial community composition. In conclusion, the microbial community of silages is distinctive in cold and humid regions, and climatic parameters ultimately affect the microbiota and fermentation products. Furthermore, the findings of this study demonstrate that Illumina MiSeq sequencing combined with environmental factor assessment might provide new information about the microbiota composition and fermentation quality of silages, facilitating the achievement of high-quality silage.

Monitoring of long‐term vegetation dynamics and responses to droughts of various timescales in Inner Mongolia

AbstractThe characteristics of vegetation and drought for different seasons between 1982 and 2015 in Inner Mongolia were studied based on the normalized difference vegetation index (NDVI) and the standardized precipitation evapotranspiration index (SPEI). The response of vegetation to drought over various timescales for different seasons and vegetation types was investigated using the maximum Pearson correlation, allowing a discussion about the possible causes of any changes. The results indicate that the vegetation NDVI in Inner Mongolia showed an increasing trend in different seasons, with spring vegetation NDVI (April–May) having the largest significant increasing rate, followed by the growing season (April–October), autumn (September–October), and summer (June–August). Accordingly, the proportion of stations with decreasing SPEI was, in descending order, summer, growing season, autumn, and spring. Additionally, the magnitude of the SPEI decrease was greater in eastern Inner Mongolia. NDVI and SPEI were positively correlated in most regions of Inner Mongolia, indicating that changes in vegetation in most parts of this region were affected by the spatial and temporal characteristics of drought, the correlation being them being strongest in the growing season, followed by summer, then spring and autumn. Considering the different types of vegetation, forests were less affected by drought, with broadleaf forests more affected than coniferous forests. The meadow steppes and typical steppes were more affected by 12‐month droughts in the growing season and summer, 6‐month droughts in spring, and 3‐month droughts in autumn, with desert steppes mainly affected by 3‐month droughts. The shrubs, sandy vegetation, and cropland were mostly affected by droughts in summer, and show a greater response to 3‐month droughts in autumn. Finally, the water balance was found to be the most important factor affecting the response of vegetation to drought in Inner Mongolia.

Screening and the ability of biogenic amine-degrading strains from traditional meat products in Inner Mongolia

Biogenic amines (BAs) are widely contained in fermented meat products and are harmful to human health with high level content. Reducing BAs content with microorganisms that don't produce decarboxylase seems beneficial. This study screened three strains had the capacity to degrade BAs from meat products in different regions of Inner Mongolia. Three strains were screened because they didn't have amino acid decarboxylase activity and had good growth performance and abilities of acid producing, salt resistance and antibacterial. X22-2 and HX2-1 were identified as Lactiplantibacillus plantarum, and X6-6 was identified as Pediococcus pentosaceus through 16S rDNA sequencing. All the three strains could degrade seven kinds of BAs, especially the tryptamine and phenethylamine. The reduced content of tryptamine of the three strains were all above 93 mg/L. Both the suspension and supernatant of the three strains effectively degraded BAs content produced by BA-producing bacteria (Enterococcus faecium, E. faecalis, and Enterobacter aerogenes). Tryptamine and phenethylamine could not be detected both in suspension and supernatant of the three strains in the medium containing Enterobacter aerogenes. In view of their good fermentation capacity and strong ability to reduce BAs, the three strains can be used as starter cultures in meat products.

The Mongolian National Factor in the PRC and Sino-Mongolian Relations

The article examines the influence of the Mongolian national factor on Sino-Mongolian relations, as well as its repercussion in PRC domestic policy, primarily in the Autonomous Region of Inner Mongolia. Particular attention is paid to ethno-cultural reasons and conditions that hinder the stable development of bilateral relations between China and Mongolia: the existence of world pan-Mongolian and nationalist movements, the dispute over the status of the XIV Dalai Lama, China's actions to appropriate the symbols of traditional Mongolian culture and the commercialization of Genghis Khan's personality. In the study of Beijing's national policy in Inner Mongolia, the historical prerequisites that served to complicate the Mongolian issue in the modern PRC were identified, and the features of the policy of forming the "consciousness of the community of the Chinese nation" in relation to the IMAR were discovered. Special attention is paid to Beijing's attempts to acculturate the Mongols living in the PRC by translating educational programs from Mongolian into Chinese, regulating the rituals of Buddhism, and appropriating common Mongolian intangible cultural heritage sites to China.Separately, the growing economic interaction between China and Mongolia, which results in China's leading position in the foreign trade turnover of Mongolia and in foreign investment in the country's enterprises, is considered. The Beijing's sanctions pressure on Ulaanbaatar is analyzed in connection with disagreements on national and religious grounds, as a result of which the Mongolian leadership made concessions to the PRC. The study concludes that, from a rational viewpoint, it is beneficial for China and Mongolia to maintain a stable and predictable bilateral political and economic interaction. At the same time, the Mongolian national factor forces both states to treat each other with a certain degree of apprehension. Beijing sees Mongolia as a country bearing the threat of pan-Mongolian separatism, and Ulaanbaatar, based on the historically established Sinophobic mentality of the Mongols, is afraid of falling into total economic and cultural dependence on the PRC.

Wind Power Increases the Plant Diversity of Temperate Grasslands but Decreases the Dominance of Palatable Plants

As an important clean energy source, the scale and quantity of wind power have steadily increased under the background of global change. The construction and operation of wind power facilities have massive impacts on grassland microclimates. However, the effect of wind power operation on the plant community composition is still unclear. To investigate this issue, we selected wind farms in 6 meadow grasslands and 6 typical steppes in the central region of Inner Mongolia, the province with the largest scale of grassland wind power operations in China. At these sites, we conducted field sample surveys to obtain species information, measure plant biomass, calculate plant diversity, and take soil samples to determine soil nutrients. The results showed that wind power operation significantly reduced the dominance of Poaceae and Cyperaceae plants in both types of grasslands and significantly increased the Shannon diversity of meadow grasslands. The inconsistent responses at each experimental site led to a nonsignificant overall effect of wind power operation on the plant beta diversity. In addition, wind power operation significantly increased plant biomass in meadow grasslands. Wind power operation did not change the soil total carbon, total nitrogen, ammonium nitrogen, or nitrate nitrogen. On the basis of the results, we suggest strengthening the long-term monitoring of temperate grassland plant community composition in wind farms, and replanting of community-building species could be done at appropriate times.

Burned vegetation recovery trajectory and its driving factors using satellite remote-sensing datasets in the Great Xing’An forest region of Inner Mongolia

Forest fire is one of the most important factors that alter a forest ecosystem’s biogeochemical cycle. Large-scale distributed burned areas lose their original vegetation structure and are more impacted by climate change in the vegetation recovery process, thus making it harder to restore their original vegetation structure. In this study, we used historical Landsat imagery and the LandTrendr algorithm in the Google Earth Engine platform to study and identify post-fire stages in the Great Xing’An Range of Inner Mongolia. Moreover, we categorized different post-fire vegetation recovery trajectories. The usefulness of spectral indices was also evaluated in the study region. We applied the Geodetector model to analyze the driving factors of the burned area vegetation regeneration process. The results show that burn severity and earth–atmosphere hydrological cycle are two main impacting factors in the short term after the fire (e.g. 5–6 years). Other climatical conditions affect vegetation recovery, including prolonged vegetation recovery process, hydrothermal circulation process and topographical conditions, seasonally frozen soil, freeze–thaw processes, and climate events. This study improves understanding of the dynamic successional processes in the burned area and the driving factors. Also, the outcomes can facilitate and support sustainable forest management of the Great Xing’An Range.

Influencing factors of crop planting structure change in the black soil region of Inner Mongolia

Influencing factors of crop planting structure change in the black soil region of Inner Mongolia

2000-2018年内蒙古沙区“生态-经济-社会”复合系统脆弱性演变及关键影响因素

PDF HTML阅读 XML下载 导出引用 引用提醒 2000-2018年内蒙古沙区“生态-经济-社会”复合系统脆弱性演变及关键影响因素 DOI: 10.5846/stxb202203100586 作者: 作者单位: 作者简介: 通讯作者: 中图分类号: 基金项目: 国家自然科学基金面上项目(41971253) Vulnerability evolution of the ecological-economic-social complex system and the key influencing factors in the sandy region of Inner Mongolia from 2000 to 2018 Author: Affiliation: Fund Project: National Natural Science Foundation of China(41971253) 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:在气候变化和人类活动共同影响下,沙区"生态-经济-社会"复合系统快速变化,为沙漠化治理及区域可持续发展带来了严峻的挑战。因此,揭示沙区"生态-经济-社会"复合系统脆弱性演变规律,辨识影响脆弱性演化的关键因素及区域差异对沙区可持续管理具有重要意义。以内蒙古自治区为研究区,利用"暴露-敏感-适应"评估模型构建沙区"生态-经济-社会"复合系统脆弱性评价指标体系,将空间主成分分析与时空地理加权回归模型相结合,探讨2000-2018年内蒙古"生态-经济-社会"复合系统脆弱性时空演变及关键因素作用机制。结果表明:(1)脆弱性及暴露度、敏感性和适应性三个维度在空间上均有较强的异质性特征,脆弱性具有整体分散、局部聚集的分布格局;暴露度的空间分布为中部高,两边低;敏感性的空间分布为西部高,东部低;适应性的高低值分布与脆弱性相反。(2)脆弱性的变化在总体上呈现大部分区域降低,局部区域升高的趋势,显著升高区域主要聚集在内蒙古南部地区。(3)影响脆弱性分布的因素在每年均有所不同,但总体上植被覆盖度、沙漠化程度、气象指数等生态指标是影响脆弱性显著变化区域的主要因素。 Abstract:Under the combined effects of climate change and human activities, the rapidly change of the ecological-economic-social complex system in sandy areas poses serious challenges to desertification control and regional sustainable development. Therefore, it is of great significance to reveal the vulnerability evolution law of the ecological-economic-social complex system in sandy region, identify the key factors affecting the vulnerability evolution for the sustainable management of sandy region. In this paper, the Inner Mongolia Autonomous Region was taken as the research area, and the VSD (Vulnerability Scoping Diagram) model was used to construct the vulnerability assessment index system for the ecological-economic-social complex system. The spatial principal component analysis and spatio-temporal geographically weighted regression model were combined to explore the spatio-temporal evolution of the vulnerability of the ecological-economic-social complex system and the influencing mechanisms of the key factors from 2000 to 2018. The results show that: (1) vulnerability, exposure, sensitivity and adaptability have strongly heterogeneous characteristics in space, and vulnerability has a distribution pattern of overall dispersion and local aggregation; the spatial distribution of exposure is high in the middle and low on both sides; the spatial distribution of sensitivity is high in the west and low in the east; the distribution of high and low values of adaptability is the opposite of vulnerability. (2) Vulnerability changes generally show a trend of decreasing in most regions and an increasing trend in some areas. The areas with vulnerability significantly increase mainly concentrated in the southern Inner Mongolia. (3) The factors that affect the distribution of vulnerability are different each year, but in general, ecological indicators such as vegetation cover, desertification degree and meteorological indices are the main factors that affect significant change in vulnerability. 参考文献 相似文献 引证文献

A Study on the Spatial-Temporal Evolution and Driving Factors of Non-Grain Production in China's Major Grain-Producing Provinces.

Food self-sufficiency in a large country with 1.4 billion people is very important for the Chinese government, especially in the context of COVID-19 and the Russian-Ukrainian conflict. The objective of this paper is to explore the spatial-temporal evolution and driving factors of non-grain production in thirteen major grain-producing provinces in China, which account for more than 75% of China's grain production, using 2011-2020 prefecture-level statistics. In the present study, the research methodology included GIS spatial analysis, hot spot analysis, and spatial Durbin model (SDM). The findings of this study are as follows: (1) The regions with a higher level of non-grain production were mainly concentrated in the central and western regions of Inner Mongolia, the middle and lower reaches of Yangtze River and Sichuan, while the regions with a low level of non-grain production were mainly distributed in the Northeast Plain. The regions with a higher proportion of grain production to the national total grain production were concentrated in the Northeast Plain, the North China Plain, and the Middle and Lower Yangtze River Plain of China. The hot spot regions with changes in non-grain production levels were mainly distributed in the Sichuan region and Alashan League City in Inner Mongolia, and the cold spot regions were mainly distributed in Hebei, Shandong, Henan, and other regions. (2) An analysis of the SDM indicated that the average air temperature among the natural environment factors, the ratio of the sum of gross secondary and tertiary industries to GDP, the ratio of gross primary industry to the GDP of economic development level, the urbanization rate of social development, and the difference in disposable income per capita between urban and rural residents of the urban-rural gap showed positive spatial spillover effects. The grain yield per unit of grain crop sown area of grain production resource endowment, the total population of social development, and the area sown to grain crops per capita of grain production resource endowment all showed negative spatial spillover effects. The research results of this paper can provide a reference for the country to carry out the governance of non-grain production and provide a reference for China's food security guarantee.