Spatiotemporal evolution and prediction of habitat quality in Hohhot City of China based on the InVEST and CA-Markov models

With the acceleration of urbanization,changes in the urban ecological environment and landscape pattern have led to a series of prominent ecological environmental problems.In order to better coordinate the balanced relationship between city and ecological environment,we selected land use change data to evaluate the habitat quality in Hohhot City of China,which is of great practical significance for regional urban and economic development.Thus,the integrated valuation of ecosystem services and tradeoffs(InVEST)and Cellular Automata-Markov(CA-Markov)models were used to analyze,predict,and explore the Spatiotemporal evolution path and characteristics of urban land use,and forecast the typical evolution pattern of land use in 2030.The results showed that the land use types in Hohhot City changed significantly from 2000 to 2020,and the biggest change took place in cultivated land,grassland,shrub,and artificial surface.The decrease of cultivated land area and the increase of artificial surface area were the main impact trend of land use change.The average value of habitat quality had been decreasing continuously from 2000 to 2020,and the values of habitat degradation were 0.2605,0.2494,and 0.2934 in 2000,2010,and 2020,respectively,showing a decreasing trend.The decrease of habitat quality was caused by the needs of economic development and urban construction,as well as the impact of land occupation.During this evolution,many cultivated land and urban grassland had been converted into construction land.The simulated land use changes in 2030 are basically the same as those during 2000-2020,and the habitat quality will still be declining.The regional changes are influenced by the urban rapid development and industrial layout.These results can provide decision-making reference for regional urban planning and management as well as habitat quality evaluation.

Early Cretaceous overprinting of the Mesozoic Daqing Shan fold-and-thrust belt by the Hohhot metamorphic core complex,Inner Mongolia,China

The Early Cretaceous Hohhot metamorphic core complex （mcc） of the Daqing Shan （Mtns.） of central Inner Mongolia is among the best exposed and most spectacular of the spatially isolated mcc＇s that developed within the northern edge of the North China ＂craton＂. All of these mcc＇s were formed within the basement of a Late Paleozoic Andean-style arc and across older Mesozoic fold-and-thrust belts of variable age and tectonic vergence. The master Hohhot detachment fault roots southwards within the southem margin of the Daqing Shan for an along-strike distance of at least 120 km. Its geometry in the range to the north is complicated by interference patterns between （1） primary, large-scale NW-SE-trend- ing convex and concave fault corrugations and （2） secondary ENE-WSW-trending antiforms and syn- forms that folded the detachment in its late kinematic history. As in the Whipple Mtns. of California, the Hohhot master detachment is not of the Wernicke （1981） simple rooted type; instead, it was spawned from a mid-crustal shear zone, the top of which is preserved as a mylonitic front within Carboniferous metasedimentary rocks in its exhumed lower plate. 4~Ar-39Ar dating of siliceous volcanic rocks in basal sections of now isolated supradetachment basins suggest that crustal extension began at ca. 127 Ma, although lower-plate mylonitic rocks were not exposed to erosion until after ca. 119 Ma. Essentially synchronous cooling of bornblende, biotite, and muscovite in footwall mylonitic gneisses indicates very rapid exhumation and at ca. 122--120 Ma. Contrary to several recent reports, the master detachment clearly cuts across and dismembers older, north-directed thrust sheets of the Daqing Shah foreland fold-and-thrust belt. Folded and thrust-faulted basalts within its foredeep strata are as young as 132.6 ± 2.4 Ma, thus defining within 5--6 Ma the regional tectonic transition between crustal contraction and profound crustal extension.

Revenue Sharing in Dairy Industry Supply Chain-A Case Study of Hohhot,China

Dairy industry has become an increasingly important enterprise in China as people＇s dietary preferences and composition have changed dramatically with rapid economic development in the past several decades.A number of problems,however,exist in China＇s relatively young dairy industry,including the imbalanced allocation of profits throughout the dairy supply chain.One of the root causes of the melamine infant powered milk scandal in 2008 was the unfair profit allocation mechanism in dairy supply chain.The revenue sharing contract approach has proven to be effective in generating market shares and total profits.In this study,we apply the three-stage revenue sharing contract model of Giannoccaro and Pontrandolfo（2004） in an analysis of dairy supply chain to explore its problems in profit allocation and possible solutions to them.The analysis was conducted by a case study of Hohhot,often called as ＂milk capital of China＂.Our results show that the current profit distribution in the dairy supply chain is not balanced：the supermarket＇s profitfarmer＇s profitmanufacturer＇s profit.Under the revenue sharing contract setting,the dairy industry＇s total profit increased by 12.49%.By exploring different parameters in the revenue sharing contract model,we have found that a win-win situation can be created among all the members of the supply chain.In dairy supply chain,the ratio of the revenue reserved for the supermarket itself is equal or greater than 47% and the ratio of the revenue reserved for the manufacturer itself is between 46.4 and 50.2%.The values of the parameters that generate a sustainable or win-win situation are related to the bargaining position in the dairy supply chain.The revenue sharing contract has proven to be effective and desirable by all the dairy chain partners in dairy supply chain.The results of this study provide relevant information for improving the dairy supply chain structure and the revenue sharing contract model can be applied to other industries,sectors and regions.

GENESIS OF SOIL ALKALIZATION WITH SODIUM CARBONATE IN HOHHOT PLAIN

Hohhot Plain, lying in the front of the Yingshan Mountains in inner Mongolia, isbounded by the mountain north, the Yellow River south, the Manhan Mountain east andloess hills southeast. Being 986 to 1100 meters above ses level, the plain generally slopesdown to the southwest, just in accordance with the flowing direction of the Great Heihe Riv-er and the Small Heihe River.

Numerical Simulation of a Severe Convection Weather in Spring in Hohhot

[Objective] The aim was to simulate the development process of one spring hailstone weather in Hohhot. [Method] By dint of three dimensional cumulus numerical models, and considering real time radar echo document and ground hailstorm data, numerical simulation was conducted to the development process of one hailstorm in Hohhot. [Result] The numerical simulation suggested that in the early period of the development of hailstorm cloud, the low layer convergence and high layer divergence were weak and the divergence layer height was low (4.5 km), Vor had weak symmetric dual structure; in the maturing period of the formation of hail cloud, the low layer convergence and high layer divergence strengthened and the divergence layer height increased obviously (9.5 km). Vor has obvious dual symmetric structure. Qg and Qt value increased rapidly and the top of Qt uplifted (10.5 km). The maximum upward airstream speed of output model Wm, divergence Div, vertical vector of vortex Vor, specific water content of graupel Qg, total specific water content Qt, ground solid precipitation Rs and theoretical value, radar echo and ground observation fit well. [Conclusion] The model had capacity to simulate strong convective cloud development process and could be developed and used continuously in the professional work of the weather modification.

Study on the Anisotropy of the Underground Medium in Hohhot

In this paper,the data of earthquake events of magnitude MS6.0 and above produced in Hohhot Seismic Station from 2008 to 2015 and the data of0 seismic events from2015 to 2016 in Horinger Seismic Station and the surrounding mobile stations in southern Hohhot are selected.Using Splitlab and SAM software,the spin-correlation method,the least-energy method and the cross-correlation coefficient method are used to analyze the teleseismic and near-seismic phases(SKS,S).The results of this study are in good agreement with the results previously obtained by other researchers.The study of teleseismic SKS splitting reflects the characteristics of the anisotropy of the upper mantle beneath Hohhot,that is,the anisotropy of the upper mantle shows NW,which reflects"fossil"Anisotropy,mainly in the continental structure of stable units and preserves the history of mantle deformation information.The crustal anisotropy reflected by the nearearthquake S-wave splitting study is similar to that of the active fault zone,trending NE as a whole and is consistent with the tectonic stress field background of the northeastern margin of Ordos block.

Research on the Perception of Green Visual Exposure Space Based on SD Method:Taking Saishang Old Street Cultural Area in Hohhot as an Example

With the rapid development and improvement of urban construction,the influence of green environmental exposure on mental health has attracted increasing attention,but the relationship between the psychological perception and the object index has been less explored.From the perspective of the individual and environmental perception,space optimization of cultural blocks was discussed to provide a reference for the development of other old streets.

Particulate matter trends and quantification of the spring sand-dust contribution in Hohhot,Inner Mongolia,from 2013 to 2017

2013年9月国务院颁布了《大气污染防治行动计划》.研究其实施前后呼和浩特市大气污染物浓度变化及及原因;同时,分析了春季沙尘天气对于呼和浩特市大气环境颗粒物浓度的定量影响.结果表明:呼和浩特市大气环境质量持续改善,但大气污染物浓度仍然较高.PM_(2.5)和PM10年均浓度分别超过国家二级标准22.9%和35.7%;2013-2017年春季PM_(2.5)和PM10浓度降幅较大,沙尘天气对呼和浩特市PM_(2.5),PM10,和TSP浓度的绝对贡献范围分别在0.6-5.2μg m^(-3),9.0-16.9μg m^(-3)和14.7-30.0μg m^(-3).

Optimization of Urban Land Use Structure Based on the Perspective of GMOP-GA——A Case Study of the Urban Districts of Hohhot

Taking the urban districts of Hohhot as the study area,using the classification data of land use change and relevant socio-economic statistical yearbook data in 2001-2016,taking the dual targets of economic-ecological and related constraint factors as the optimal decision of optimization of land use structure,using the Grey Multi-objective Programming( GMOP) and Genetic Algorithm( GA) to estimate the intervals of predictive threshold value of the factors and inequality constraint equations,and on the basis of it to designed two schemes for optimization of land use structure for the study area in 2030 and made them in comparison and optimization. The results show that in contrast to the primitive land use structure,the optimized scheme based on the economic-ecological comprehensive benefit is better than the current land use structure as the two aspects of the overall land output benefit and the scale combination of single type land use and the current land use structure.

History of Paleoseismic ActivityAlong the Hohhot Segment of Daqingshan Piedmont Fault in the Late Quaternary

A detailed study on geomorphic surfaces and a set of trenches on the Hohhot segment of Daqingshan piedmont fault at three sites, Kuisu, Ulan Blang, and Qingshan Grassland, revealed 7 paleoseismic events occurred along the fault segment since 19 ka BP. Those events occurred at 18.75±.75 ka, 16.97 ±.96 ka, 14.65±.67 ka, 11.82±.69 ka, 9.45±.26 ka, 6. 83±.26 ka, and 4. 50 ±0. 23 ka BP, respectively, and their average recurrence interval is 2375±432 years. From the results of constraining fault displacement and correlation between the sediments in these trenches, we found a complete paleoseismic activity history along the fault segment during this period of time.

Contribution of Agricultural Input to Output in Hohhot City

Based on the research data from the economics and management platform of Inner Mongolia Agricultural University,we analyze the changes in the input of agricultural production factors,such as farmland,labor and capital in Hohhot City. Based on the principle of econometrics,we select the agricultural production input-output data in Hohhot City during the period 1992-2010,and establish the econometric model using Cobb-Douglas production factor,to estimate the rate of contribution of agricultural input to the growth of agricultural output value,and study the quantitative relations between agricultural input and agricultural output value. The results show that in Hohhot City,the contribution of chemical fertilizer input to the growth of agricultural output value is the greatest; the contribution of mechanical power to agricultural output value is still not brought into full play; the contribution of remaining production inputs ( including technical progress) accounts for 35. 69% . In the future,Hohhot City should pay more attention to the technical input to develop agriculture.

A Study on Average Velocity Ratios(V_P/V_S) in the Hohhot-Baotou Area

The geological structure is complex in the Hohhot-Baotou area.Several earthquakes with MS≥6.0 have occurred in the area in history.This article selected the Hohhot-Baotou area as the study region and divided it into 2 sub-regions,each with a spatial scope of 3°×2°,according to the spatial distribution of ML≥1.0 earthquakes occurring between January 2001 and April 2010,and the layout of the seismic network in the study region.Average velocity ratios of respective sub-regions were calculated,and comparative analysis was made on their temporal and spatial variations.Results show that there are slight differences between sub-regions in the variation amplitude of average velocity ratio curves over time,which mostly remains between 2.5% to 2.584%.In the Hohhot area,the average velocity ratio is 1.722,significantly lower than the average velocity ratio of 1.733 in the Baotou area.We preliminarily concluded that this was related to the distribution of fault structures and properties of underground media in the Hohhot area.

Contest: 2022 My Story of Chinese Hanzi held successfully in Hohhot, Inner Mongolia

On Jan 10, the final round of a contest—2022 My Story of Chinese Hanzi — was held in Hohhot, Inner Mongolia autonomous region. It was hosted by the Chinese People’s Association for Friendship with Foreign Countries, and jointly operated by the Hohhot Committee of the Communist Party of China, the Hohhot People’s Government and People’s Daily Online.

高铁呼南通道邵永铁路引入邵阳地区方案研究

研究目的:呼南通道作为“八纵八横”国家高铁主通道之一,邵阳至永州铁路是呼南通道的重要组成部分。本文基于邵阳地区既有铁路、客流特点、城市规划等因素,研究提出邵永铁路在邵阳地区的引入方案,再根据运输能力适应、既有设备利用、工程投资节省、运营成本控制、未来持续发展等需求,进一步细化比选,形成邵永铁路引入邵阳地区的优选推荐方案。研究结论:(1)根据邵阳地区既有铁路概况,以及邵阳市城市总体规划和客运需求,研究提出邵永铁路引入邵阳站和新设邵阳南站两大系列方案;(2)通过比较分析各项具体方案的线路布局、工程投资、运输质量、未来发展等控制因素,推荐采用按线路别引入邵阳站娄邵场调整到发线分工的方案,并预留未来娄邵高铁引入邵阳站的条件;(3)本研究结果可应用于高铁呼南通道邵永段的勘察设计中,对引入工程的建设具有指导作用。

呼和浩特地区类蒙古包建筑结构现状研究

随着人们对民族文化重视程度的加深,越来越多的类蒙古包建筑出现在内蒙古地区,越来越多的建筑师及学者以民族文化为出发点进行地域建筑设计,然而类蒙古包建筑的结构却很少出现在研究体系内,结构形式与建筑设计的合一性与规范化被忽视。文章旨在通过对现阶段呼和浩特地区类蒙古包建筑结构的调查研究,归纳总结类蒙古包建筑的结构形式、材料、跨度和结构构造,以期补充目前对内蒙古地域建筑结构研究的不足,并且为相关类蒙古包建筑的研究提供结构方面的支持。

基于绿色与安全理念的城市韧性评价研究——以呼和浩特市街道为例

以呼和浩特市街道为例,采用熵权与GIS相结合的方法,构建城市绿色与安全韧性评价指标体系,并对33个街道进行韧性评价,其中2/3的街道韧性水平值低于平均值,并存在较大的差异性。在空间上韧性水平较低的街道在研究区西南集聚,高韧性街道从中心往外大致呈“高-低-高”分布格局,研究结果与城市用地扩建方向与时间、功能布局等实际情况比较吻合。最终从街道、市辖区和市级角度提出韧性提升对策建议,对绿色安全城市建设和防灾规划从“多城一策”向“一城一策”转变有重要的参考价值。

基于PLUS-InVEST模型的呼和浩特市多情景土地利用变化动态模拟及碳储量评估

为探究呼和浩特市土地利用变化对生态系统碳储量的影响,本研究基于InVEST模型与PLUS模型模拟预测呼和浩特市在自然发展、生态保护、耕地保护、城市发展4种情景下的土地利用与碳储量。结果表明:1990-2020年呼和浩特市不透水面、林地、草地、水体等土地利用类型的面积呈增加状态,耕地、裸地、灌木地等土地类型的面积呈减少状态,其中灌木地和裸地的土地转出率较高,分别为93.63%和98.24%。InVEST模型估算结果显示,不透水面不断扩张,侵蚀耕地等高碳密度土地类型,造成呼和浩特市1990-2020年碳储量呈逐年递减趋势。2030年自然发展、生态保护、耕地保护、城市发展情景模拟下的呼和浩特市的碳储量与2020年相比均呈现减少状态,其中耕地保护情景碳储量降幅最小,其次为生态保护情景,说明采取合理的保护措施能够有效抑制碳储量下降。耕地保护情景能够有效减缓城市建筑的扩张趋势,生态保护情景则可有效增加水体、草地等生态类用地面积。研究表明,落实耕地和生态保护政策、优化土地利用结构、提高土地利用效率对呼和浩特市的可持续发展均有重要意义。

人口老龄化背景下呼和浩特市城区老年人医养结合服务需求及影响因素研究

目的:了解呼和浩特市城区老年人医养结合需求情况,探讨其影响因素,对本地区医养结合提出完善对策,助力医养结合的发展。方法:从呼和浩特市4个主城区随机抽样5个社区,每个社区随机选取20名老年人,共对400名老年人进行医养需求的问卷调查,对结果进行Logistic回归分析。结果:统计结果显示,72.5%的呼和浩特市城区老年人有医养结合服务需求。单因素Logistic回归结果显示,老年人性别、年龄、身体状况、患有慢病数量、子女个数、婚姻状况、职业、年收入、养老倾向等因素,医养结合服务需求间差异均有统计学意义(P<0.05)。文化程度、医疗保险险种,医养结合服务需求间差异均无统计学意义(P>0.05)。多因素Logistic回归结果显示,老年人性别、年龄、身体状况、患有慢病数量、子女个数、婚姻状况、职业、年收入、养老倾向是呼和浩特市城区老年人医养结合需求的影响因素(P<0.05)。结论:呼和浩特市城区老年人医养结合需求率较高,应尽快完善养老体系建设,创建地区养老模式,探索老年人内在能力筛查机制,加强预防保健宣传,提高社区医养服务能力,推进养老差异化建设。

不同植被类型城市绿地土壤碳氮分布及影响因素

城市绿地土壤在调节城市生态系统碳氮循环和缓解热岛效应中起关键作用,但受自然与人为因素交互影响,不同地区、土壤质地或植被类型土壤碳氮分布存在显著差异。本研究选取内蒙古林科院树木园内草地、灌木林、油松(Pinus tabuliformis)人工林和杨(Populus)树人工林为研究对象,分析了各样地不同土层间土壤碳氮含量、储量空间分布特征及其对环境因子的响应。结果表明:(1)不同植被类型城市绿地土壤容重、毛管孔隙度、非毛管孔隙度及饱和持水量变化范围分别为1.37~1.41 g.cm^(-3)、35.71%~39.13%、2.98%~6.75%和31.23%~36.11%,其中草地土壤容重最大,毛管和非毛管孔隙度及饱和持水量最小,杨树人工林则相反;(2)土壤有机碳和全氮含量变幅分别为16.70~38.34 g.kg^(-1)和0.54~1.64 g.kg^(-1),分别在20~40 cm和0~10 cm土层增幅最大,为57.01%和33.33%,且表现为:杨树人工林>油松人工林>灌木林>草地;(3)土壤有机碳和全氮储量变幅分别为126.89~163.33 t.hm^(-2)和4.44~6.24 t.hm^(-2),0~20 cm土层碳氮储量占比最大,均超过总储量的50%,且均在20~40 cm土层增幅最大,分别为53.83%和66.05%;(4)垂直剖面上,各样地土壤碳氮含量、储量均随土层加深而减小,具有明显的表聚性;(5)城市绿地土壤碳氮空间分布影响因素具有综合性和复杂性,本研究中土壤容重、植被类型和微生物数量是土壤碳氮空间分布的主控因子。

呼和浩特市草原鞘翅目昆虫多样性研究

为明确呼和浩特市草原鞘翅目昆虫种类及分布,对鞘翅目昆虫多样性进行详细研究。2022年6月—9月,使用网捕法对设定的7条踏查路线进行昆虫采集。通过外观形态进行种类鉴定,并确定鞘翅目害虫种类,采用物种丰富度指数、多样性指数、优势度指数、均匀度指数与Jaccad群落相似性系数对采集的鞘翅目昆虫进行多样性分析。结果表明,此次调查共获得1 015个昆虫标本,经鉴定,属于17科49种。其中优势科为芫菁科和叶甲科,各占昆虫总种数的19.15%和23.40%,苹斑芫菁在各地区均有分布。和林格尔县是鞘翅目昆虫物种丰富度指数、多样性指数和均匀度指数最高的地区,优势度指数居中。不同地区间物种均匀度指数差异不大。以期明确并丰富该地区鞘翅目昆虫多样性,同时加强对害虫的预防管理工作,预防草原虫害的发生。