Exploration of Eco-economic Development in Ecological Fragile Region——A Case Study on Wuqi County in Shaanxi Province

[Objective] The aim was to explore eco-economy in ecological fragile region with Wuqi County in Shaanxi Province as an example. [Method] Eco-economy development and major environmental problems in Wuqi County in Shaanxi Province were researched based on local social and economic conditions, population of impoverished people and environment vulnerability. [Result] The areas with vulnerable environment and backward economy should establish a virtuous circle between economy and environment and a sustainable model of economic development. [Conclusion] It is significant to change the severe situation of environment deterioration and to promote ecological civilization.

GEOMORPHOLOGICAL CHARACTERISTICS AND REGIONAL DIFFERENTIATION OF LANDSCAPE OF NORTH SHAANXI

Northern Shaanxi is located on the Erdos syncline, a subdivision of North China Shield. The loess landforms are the main landform types, additionally, there are low rocky mountains and hills, valleys and eolian landforms. Changes of techonic bases and of water-heat conditions in the region cause obvious regional differentiations of the landcape. From south to north,accompanying with uprising of the relief and decrease of mean annual temperature and precipitation, the types of landforms, degree of dissection,vegetation cover-degree and intensity of soil and water loesses show clearly latitudinal zonation.

Analysis of a Regional Rainstorm Process in South Shaanxi during July 17-18,2010

Based on conventional high-altitude aerial and ground data, regional intensive rainfall data, Doppler weather radar and satellite cloud data, the occurrence and development process of a regional rainstorm in South Shaanxi during July 17 -18, 2010 was discussed deeply. The results showed that the occurrence and development of the mesoscale weather system resulted in the heavy storm directly besides favorable large-scale background, and the the occurrence and development of the system had strong local and sudden characters. In addition, heavily concentrated wa- ter vapor in the troposphere at low and middle altitudes as well as existence of unstable conditions of convection might be favorable to the develop- ment of the system, while dynamic action of terrain, ground weak cold front and disturbance of the low-level jet stream might trigger the occurrence and development of the system.

Quantitative analysis of the dynamic change and spatial differences of the ecological security: a case study of Loess Plateau in northern Shaanxi Province

Using the theory and method of the ecological footprint, and combining the changes of regional land use, resource environment, population, society and economy, this paper calculated the ecological footprint, ecological carrying capacity and ecological surplus/loss in 1986-2002 on the Loess Plateau in northern Shaanxi Province. What is more, this paper has put forward the concept of ecological pressure index, set up ecological pressure index models, and ecological security grading systems, and the prediction models of different ecological footprints, ecological carrying capacity, ecological surplus and ecological safety change, and also has assessed the ecological footprint demands of 10,000 yuan GDE The results of this study are as follows： （1） the ecological carrying capacity in northern Shaanxi shows a decreasing trend, the difference of reducing range is the fastest; （2） the ecological footprint appears an increasing trend; （3） ecological pressure index rose to 0.91 from 0.44 during 1986-2002 on the Loess Plateau of northern Shaanxi with an increase of 47%; and （4） the ecological security in the study area is in a critical state, and the ecological oressure index has been increasing rapidlv.

The Extension Methods and Fecision-making Analysis on the Planting Dtructure of Dlope Garmland in Northern Shaanxi

Based on the resent research about the planting structure of slope farmland in northern Shaanxi,in order to increase the native's income,we use the theory of the extension methods to analyze the planting structure of slope farmland,so that we can get the extensive strategy,and put them into use for planting of slope farmland to make the native's income higher.

Tourism-guided Planning of Immigrant Relocation:A Case Study of Phoenix Mountain Resort Park in Hanyin County, South Shaanxi

The implementation of the rural resettlement policy in southern Shaanxi has produced a lot of rural immigrants that need urgent resettlement. The subsequent settlement problem is the core issue of migration policy. All kinds of special background and demand of these "rural immigrants" put forward new requirements for resettlement planning. This paper explored the planning of rural immigrant relocation under the guidance of tourism industry, so as to create a new living environment for immigrants inheriting traditional cultural context, and revitalize the new urbanization of south Shaanxi. First, the paper briefly introduced the background of the rural resettlement policy in south Shaanxi. Second, taking the Phoenix Mountain Resort Park in Hanyin County for example, this paper used SWOT to analyze the feasibility of immigrant relocation in comprehensive tourist service area. Third, this paper elaborated the specific concepts and schemes.

Wet-dry changes in the borderland of Shaanxi,Gansu and Ningxia from 1208 to 1369 based on historical records

More than 240 items of historical records containing climatic information were retrieved from official historical books, local chronicles, annals and regional meteorological disaster yearbooks. By using moisture index and flood/drought （F/D） index obtained from the above information, the historical climate change, namely wet-dry conditions in borderland of Shaanxi Province, Gansu Province and Ningxia Hui Autonomous Region （BSGN, mainly included Ningxialu, Hezhoulu, Gongchanglu, Fengyuanlu and Yan＇anlu in the Yuan Dynasty） was studied. The results showed that the climate of the region was generally dry and the ratio between drought and flood disasters was 85/38 during the period of 1208-1369. According to the frequencies of drought-flood disasters, the whole period could be divided into three phases. （1） 1208-1240： drought dominated the phase with occasional flood disasters. （2） 1240-1320： long-time drought disasters and extreme drought events happened frequently. （3） 1320-1369： drought disasters were less severe when flood and drought disasters happened alternately. Besides, the reconstructed wet-dry change curve revealed obvious transition and periodicity in the MongoI-Yuan Period. The transitions occurred in 1230 and 1325. The wet-dry change revealed 10- and 23-year quasi-periods which were consistent with solar cycles, indicating that solar activity had affected the wet-dry conditions of the study region in the Mongol-Yuan Period. The reconstructed results were consistent with two other study results reconstructed from natural evidences, and were similar to another study results from historical documents. All the above results showed that the climate in BSGN was characterized by long-time dry condition with frequent severe drought disasters during 1258 to 1308. Thus, these aspects of climatic change, might have profound impacts on local vegetation and socio-economic system.

Geodetection analysis of the driving forces and mechanisms of erosion in the hilly-gully region of northern Shaanxi Province

This paper analyzes the spatial variation in soil erosion in the loess hilly-gully region of northern Shaanxi Province, China. It sums up existing research, describes the factors that drive soil erosion, and uses geodetection to investigate the factors individually and in pairs.Our results show that soil erosion in the loess hilly-gully region of northern Shaanxi is mainly hydraulic erosion. There are significant spatial differences in the severity of soil erosion in the region. Generally, it is more severe in the north and west and less severe in the south and east. Individual factor detection results show that the major risk factors affecting soil erosion are human population distribution, precipitation, land-use type, elevation, and soil type. Interactive detection results show that interacting factors play much bigger roles in soil erosion than do individual factors. Based on forced detection results from different periods of time, we can see that forest and grass coverage, urbanization, and economic development in the study area all clearly inhibit soil erosion.

Quantifying the vertical distribution pattern of land-use conversion in the loess hilly region of northern Shaanxi Province 1995–2015

The mountainous and hilly region plays an important role in ecological safety and production in China. However, recent studies have poorly characterized the parallel structure of land use in the valleys of the mountainous and hilly region using topographic factors(e.g.elevation, slope, aspect). Here, the loess hilly region of northern Shaanxi Province is used as a representative case area to analyze the vertical distribution pattern of land-use conversion using the relative elevation concept and the HAND index. The differences in the vertical structure of land-use conversion between absolute elevation and relative elevation were compared. We found that the classifications of absolute and relative elevation had similar proportions of each relative elevation grade in each absolute elevation grade. Cropland,woodland, and grassland were distributed evenly in each grade of absolute/relative elevation,while water body, built-up land and unused land were more likely to spread in low grades of relative elevation than those of absolute elevation. The land-use conversion(i.e. loss of cropland and gain in woodland and built-up land) showed an apparently stepped distribution with relative elevation classification, suitable for revealing vertical distributions of land-use conversion in the loess hilly region. Cropland transformed to woodland was mainly distributed in high grade of relative elevation, decreasing with a decrease in grades, while built-up land transformed from cropland and grassland was mainly distributed in low grade of relative elevation, decreasing with increases in grades. The grade of relative elevation where cropland transformed to woodland descended with the implementation of the Grain for Green Project. Our results suggest that it is better to analyze the vertical distribution of land-use conversion with relative elevation classification in hilly regions.

Response of vegetation restoration to climate change and human activities in Shaanxi-Gansu- Ningxia Region

The ＂Grain for Green Project＂ initiated by the governments since 1999 were the dominant contributors to the vegetation restoration in the agro-pastoral transitional zone of northern China. Climate change and human activities are responsible for the improvement and degradation to a certain degree. In order to monitor the vegetation variations and clarify the causes of rehabilitation in the Shaanxi-Gansu-Ningxia Region, this paper, based on the MODIS-NDVI and climate data during the period of 2000-2009, analyzes the main charac- teristics, spatial-temporal distribution and reasons of vegetation restoration, using methods of linear regression, the Hurst Exponent, standard deviation and other methods. Results are shown as follows. （1） From 2000 to 2009, the NDVI of the study area was improved progres- sively, with a linear tendency being 0.032/10a, faster than the growth of the Three-North Shelter Forest Program （0.007/10a） from 1982 to 2006. （2） The vegetation restoration is characterized by two fast-growing periods, with an ＂S-shaped＂ increasing curve. （3） The largest proportion of the contribution to vegetation restoration was observed in the slightly improved area, followed by the moderate and the significantly improved area; the degraded area is distributed sporadically over southern part of Ningxia Hui Autonomous Region as well as eastern Dingbian of Shaanxi province, Huanxian and Zhengyuan of Gansu province. （4） Climate change and human activities are two driving forces in vegetation restoration; more- over anthropogenic factors such as ＂Grain for Green Project＂ were the main causes leading to an increasing trend of NDVI on local scale. However, its influencing mechanism remains to be further investigated. （5） The Hurst Exponent of NDVI time series shows that the vegetation restoration was sustainable. It is expected that improvement in vegetation cover will expand to the most parts of the region.

陕甘宁红色旅游流的网络结构特征研究

开展陕甘宁红色旅游流网络结构特征研究,可以指导目的地旅游网络结构优化,推动红色旅游高质量发展。运用地理信息技术系统(geographic information system,GIS)技术、社会网络分析等方法,对陕甘宁红色旅游流整体网络特征、网络节点特征进行系统研究。结果表明,陕甘宁红色旅游流网络结构松散,密度低,呈现典型的“核心-边缘”特征;红色旅游流网络凝聚特征显著,地域集中性强,跨区域合作有待强化;延安革命纪念馆等关键节点功能地位突出,网络极化效应显著;核心节点对周边节点存在“虹吸效应”。研究进一步从构建多极化红色旅游流网络体系、推动红色旅游与相关业态协调发展和创新融合等方面就推动陕甘宁红色旅游流网络优化提出了相关对策建议。

区域培育发展新质生产力的条件、原则与陕西实践

新质生产力是实现中国式现代化的重大战略举措,而区域是发展新质生产力的空间载体。区域应基于不同的区位条件和产业优势,因地制宜发展区域新质生产力。以陕西为例,通过总结区域培育发展新质生产力的条件和原则,结合陕西培育发展新质生产力的发展成效和存在问题,探寻以科技创新引领培育发展具有陕西特色的新质生产力的路径,提出要进一步释放科技创新优势,开辟产业发展新赛道,建立与培育新质生产力相适应的新型生产关系。

陕南生态产品价值实现的区域合作困境与突破策略

陕南作为我国“南水北调”中线工程水源涵养地和秦巴生物资源多样性保护区,是重要的生态产品价值实现试验示范区。当前,区域合作对陕南生态产品价值实现十分必要。面对地方政府合作意愿与能力不足、生态产品相关标准体系残缺混乱、区域生态资本化运营能力薄弱、产品经营开发机制碎片化等现实困境,陕南生态产品价值实现应以生态资源区域化整合打造产品稀缺性、以区域生态资本化运营推动产品价值转化增值、以体制机制创新提升区域合作动力、以系统经营开发提升区域运营效率。针对当前所面临的困境,从生态产品价值实现的路径出发,提高地方政府合作意愿与能力,健全完善生态产品价值实现相关标准体系,提高生态资本化运营的整体能力,系统构建价值实现的经营开发机制将是推进陕南地区生态产品价值实现区域合作的努力方向。

革命课程话语的诞生——论中国共产党在陕甘宁边区的课程改革

中国共产党领导的陕甘宁边区的课程改革,创造性地建构了承载着红色文化的革命课程话语,其形成经历了全民族抗战的国防课程、提高质量的正规化课程、联系实际的本土化课程、转向文化知识的新型正规化课程四个历史阶段。革命课程话语的知识谱系与内涵集中地反映在政治、国文、历史三科之中,表现出贯穿唯物主义精神,促进语言文字大众化,以人民为社会历史的创造者等价值取向。革命课程话语的文化实践与价值意蕴体现在充分发挥育人价值,发扬人的主体自觉性;推动民族解放与独立,形成民族认同;造就民族国家共同体,并提供强大的精神动力;承载红色文化,形成革命的优良传统,探索出了一条本土化的中国课程道路。

话语转变与政治动员——论陕甘宁文艺运动中的“下乡入伍”

“下乡入伍”是抗战时期的一项重要文化政策和实践。与重口号宣传而轻组织动员的国统区大后方相比,在中国共产党领导下的陕甘宁边区,“下乡入伍”作为延安知识分子了解、反映边区军民生活的重要途径,不仅得到了边区机关、学校及各类协会的高度重视和有效组织,成为陕甘宁文艺运动的一个部分;更因为延安文艺座谈会的召开划分为各具特征的前后两期,在起到知识分子话语转变作用的同时,也对边区军民民族、国家意识的培养及其对中国共产党意识形态、政策制度的接受认可方面,发挥出巨大的政治动员效应。

蒙陕接壤区煤层顶板涌水水源智能判别方法

蒙陕接壤区煤炭高强度开采诱发的煤层顶板水害问题日益凸显,高效智能地判别煤层顶板涌水水源是顶板水害防治的关键。以蒙陕接壤区3个典型矿井为研究对象,将无机指标K^(+)+Na^(+)、Ca^(2+)、Mg^(2+)、Cl^(-)、SO_(4)^(2-)、HCO_(3)^(-)、TDS和有机指标UV_(254)、TOC、溶解性有机质(DOM)的荧光光谱作为判别指标,利用主成分分析法(PCA)对80组地下水水样数据进行主成分提取,提出一种人工鱼群算法(AFSA)改进随机森林(RF)的PCA-AFSA-RF顶板涌水水源智能判别方法。首先,建立PCA-RF判别模型,其准确率(A_(c))、精确率(P_(r))、召回率(R_(c))和F-measure指数(f_(1))分别达到了83.00%、83.17%、80.42%和79.57%;其次,通过AFSA对PCA-RF判别模型中决策树数目、树深和内部节点分裂所需的最小样本数进行寻优,在AFSA中引入遗传机制以避免陷入局部最优,建立基于PCA-AFSA-RF的煤层顶板涌水水源智能判别模型,该模型A_(c)、P_(r)、R_(c)、f_(1)分别达到92.18%、91.11%、87.58%和88.82%,较PCA-RF分别提高9.18%、7.94%、7.16%和9.25%,回代准确率达到97.50%;最后,利用该模型对12个矿井水水样进行判别,结果与现场实际相一致,表明AFSA改进后的PCA-RF模型具有更好的准确性和泛化能力。研究结果可为煤层顶板涌水水源的准确判别提供新方法。

金元时期陕北地区正一道的流布与全真道的勃兴--以出土碑铭资料为中心

金元时期中国道教得到了长足的发展,新教派纷纷出现且在宗教理论、传教方式、组织形式等方面都逐渐成熟完善。从对陕北地区发现的道教碑刻资料的考察可知,金元时期该区域内道教流派最初以正一派为主,全真教创立后,通过采取拉拢上层官绅、争取下层百姓、道观间相互扶持、发展道观经济、对儒释吸收融合的综合发展模式,一大批全真教道观陆续兴建,教众迅速增加,从而形成以延安城、鄜州葫芦河川、甘泉北洛河中游、宜川鹦鹉川和绥德州镇川寨长春观为核心的道教传播地带。金元时期道教在陕北地区的广泛传播,起到了教化百姓、稳定社会的作用。

20世纪40年代陕甘宁边区的食盐运输合作事业——以南区合作社运输队为个案

20世纪40年代,食盐的运输和外销是封锁环境下陕甘宁边区财政自给自足的依靠。为确保按期收到公盐,便利人民运输并提高边区运输力量,党和政府提倡广泛地“组织起来”,发展食盐运输合作事业。在党政的坚强领导下,南区合作社运输队历经三个主要的发展阶段,创造和积累了一套有效经验,带动边区盐运成功地突破个体运输局限,成为全边区食盐运输合作事业的模范。