Can Multiple Livelihood Interventions Improve Livelihood Resilience of Out-of-poverty Farmers in Mountain Areas?A Case Study of Longnan Mountain Area,China

Clarifying the impact of livelihood interventions on the livelihood resilience of farmers in undeveloped mountain areas can not only optimize interventions,but also provide experiential support for global poverty alleviation.To analyze the impact of multiple livelihood interventions on livelihood resilience,we constructed an analytical framework and analyzed the enjoyment of livelihood interventions and the heterogeneity of livelihood resilience among out-of-poverty farmers in the Longnan mountain areas,China.Then,we studied the impact of intervention intensity on livelihood resilience through the multiple linear regression model.The results revealed that:1)the livelihood interventions enjoyed by out-of-poverty farmer in mountain areas were multiple.The proportion of farmers enjoyed diversified livelihood interventions was in descending order of high mountain areas,semi-mountain area and Chuanba valley areas.2)The overall livelihood resilience of farmers in Longnan mountain areas was generally low,with an average of 0.299.There were significant differences in the livelihood resilience of farmers across different geographic areas in the study area and types of interventions.3)The effects of industry interventions,employment interventions and education interventions were significant.The endogenous power of farmers not only had a significant positive effect on livelihood resilience,but also positively moderated the impact of the intensity of interventions on livelihood resilience.In addition,the household dependency ratio and the average altitude of the village area had a significant negative impact on their livelihood resilience.

Research on Ecological Landscape Construction at River Bank——A Case Study of Ecological Landscape Construction at River Bank in Longnan County of Jiangxi Province,China

The basic connotations of river bank and ecological landscape construction at river bank had been illustrated.By taking ecological landscape construction of "three rivers and six banks" in Longnan County of Jiangxi Province as example,the paper had pointed out development status of ecological landscape at river banks,which was inadequate construction of ecological landscape and culture,natural landscape needing construction and protection,increasingly aggravated river pollution,lighting system waiting for perfection,large pressure from riparian real estate development,and continuously changing water level forming certain effect on current landscape.In view of above problems,it emphasized that ecological landscape construction at river bank should be combined with bank line renovation;it should pay attention to ecological maintenance,utilization of riparian space and creation of space close to water;and ecological system should be protected by combining with landscape function,so as to form watercourse green ecological corridor.It suggested enhancing spatial connectivity of riparian green patches,so as to form watercourse green ecological corridor and satisfy flowing need of biological population;and constructing wetland park at proper area.Furthermore,it had proposed specific measures for landscape construction of Wo River,Lian River and Tao River.

REE Geochemistry in the Weathered Crust of Granites, Longnan Area,Jiangxi Province

Warm and humid climate and gentle hilly topography have provided favourable conditions for the devel-opment of the weathering crust of the granite intrusions in the Longnan area, Jiangxi Province. REE is mostlyconcentrated in an adsorption state in clay in the wholly weathered zone. The rare-earth minerals enriched inthe parent rocks provided the source material for the REE enrichment. Exchangeable REE accounts for48-86%. Extraction experiments and stable isotopic study of clay minerals suggest that the downward infiltra-tion of meteoric water and increasing gradient of pH values have played an important role in the enrichment ofREE during the progressive weathering. Slight fractionation of individual REE can not change their distribu-tion patterns in the profiles. which are inherited from the parent rocks.

The Longnan M_S5. 5 Earthquake on September 12, 2008:A Very Shallow Event Probably Triggered by the Wenchuan Earthquake

The 2008 Wenchuan earthquake has a significant impact on the seismicity of nearby regions. The Longnan earthquake which occurred on September 12,2008 in Gansu Province was out of the aftershock zone. Reliable source parameters are essential for understanding the seismogenic process of this earthquake. Therefore,three approaches are adopted to study the source parameters of this event. The focal mechanism is obtained with the g CAP method that takes non-Double-Couple(non-DC)component into account. The two fault planes are NP1:150°/45°/81° and NP2:342°/45°/98°,while the non-DC component is about 53%. The focal depth is 1. 6 km,which indicates the Longnan earthquake is a shallow event. Furthermore,this result is also in good agreement with results obtained with two other approaches:amplitude spectra of Rayleigh wave and surface displacement from In SAR measurement. To analyze the cause of the event,coulomb failure stress change caused by the Wenchuan earthquake on the Longnan earthquake fault plane is calculated. The result shows that coulomb stress change is 30 k Pa around the Longnan earthquake hypocenter,which exceeds the typical triggering threshold of 10 k Pa. The research indicates that the Wenchuan earthquake probably promote the happening of the Longnan earthquake.

Changing Characteristics of Temperature in Longnan City in Recent 54 Years

Based on the observation data of temperature in Chengxian meteorological station（ the climate representative station of Longnan City,Gansu Province） during 1961-2014,the annual,seasonal and monthly changes of temperature were analyzed,and the abrupt changes in relevant variables were tested using the cumulative anomaly method. The results showed that annual average temperature in Chengxian County increased by 0. 138 ℃/10 a in the past 54 years. There was an obvious sudden change in annual average temperature around 1996. The annual average temperature showed a downward trend before 1996 and an upward trend after 1996. Average temperature in spring,summer,autumn and winter increased by 0. 113,0. 028,0. 157 and 0. 259 ℃/10 a respectively. The fluctuation of average temperature in spring and winter was the largest,followed by summer,while the fluctuation was the smallest in autumn. There were certain differences between various seasons in terms of the years with sudden changes in average temperature,which was not consistent with the years with the sudden changes in annual average temperature. The changing rate of monthly average temperature was the largest in February（ up to 0. 412 ℃/10 a）,followed by March,April and November,but it was the smallest in May（ only 0. 005 ℃/10 a）. The maximum of monthly average temperature appeared mostly in the 21 stcentury,while the minimum appeared in the 20 thcentury.

甘肃陇南不同种类花椒籽的营养成分对比研究

文章旨在以甘肃省陇南市文县九月青花椒籽、红花椒籽、无刺嫁接红花椒籽、为研究对象,采用凯氏定氮法、色谱法等测定花椒籽中蛋白、挥发油等主要营养成分的含量,评价3个不同种类花椒籽的饲用价值。结果表明,经过品种改良后,无刺嫁接花椒籽中的水分、总灰分和粗纤维含量下降,粗蛋白和粗脂肪含量增加;无刺嫁接红花椒籽中粗脂肪、粗蛋白和挥发油含量显著高于九月青花椒籽和红花椒籽(P<0.05)。无刺嫁接红花椒籽中α-亚油酸、棕榈酸、硬脂酸、顺油酸、顺亚油酸和十五烷酸中含量显著高于九月青花椒籽(P<0.05)。无刺嫁接红花椒籽中的天冬氨酸、谷氨酸、精氨酸、甘氨酸、亮氨酸、丙氨酸、丝氨酸、苯丙氨酸、苏氨酸、缬氨酸、异亮氨酸、脯氨酸、组氨酸含量和氨基酸总量均显著高于九月青花椒籽和红花椒籽中的氨基酸含量(P<0.05)。无刺嫁接红花椒籽所含必需氨基酸中异亮氨酸、赖氨酸、蛋氨酸、苏氨酸均低于FAO/WHO的推荐值,且只在无刺嫁接红花椒籽中检测出蛋氨酸,其中亮氨酸、苯丙氨酸+酪氨酸和缬氨酸均高于FAO/WHO的推荐值。综上所述,3个不同种类的花椒籽中各组成成分种类和含量有所不同,其中无刺嫁接花椒籽富含多种营养成分,具有良好的饲用开发价值。

陇南诗碑题壁诗与陇蜀“诗教”类文献的流传

散见于陇南各地诗碑与题壁中的诗作,数量较多,诸体兼备,作者属于官员、本地乡贤或游陇者群体。就其题材内容而言,除游宴抒怀、题咏陇南人文景观的篇什外,颂扬历代先贤乡哲、教化人心是其重要的方面。这些作品绝大多数不见于史传,但体现了陇蜀地域“诗教”类文献流传的重要文学文化价值,在赓续地方文脉、承载诗教化育、补史存诗文献、资于地方文旅等方面价值突出。对继承和弘扬中华优秀传统文化,坚定历史自信、文化自信具有重要现实意义。

乡村振兴战略下陇南农村体育休闲产业开发与实践研究

体育休闲产业可优化农村产业结构,带动农村经济增长。陇南农村体育休闲产业目前家庭作坊式的经营模式使农村体育休闲产业开发缺乏导向性与多样性,村落体育及其主体的缺场使农村体育休闲产业整合缺乏能动性与创造性,基层目标人才资源短缺使其开发与整合缺乏创新驱动与内化。目前,陇南农村体育休闲产业资源开发与整合存在一定的优势,农家庄园的兴起和稳步发展是实践的先决条件,独具特色的村落体育资源是其基础保障,源于地方的专业人才资源是体育休闲产业开发与实践的关键驱动。为实现陇南农村体育休闲产业开发与整合,建议以联动式农家庄园为载体,创建多点辐射村镇的健身与康养一体的体育休闲产业;以新时代村落体育为依托,挖掘多种人群参与的竞技与休闲一体的体育休闲产业;以校企政府合作为手段,开拓专业人才领军的高质量、优服务一体的体育休闲产业。

陇南大堡子山遗址秦动物纹金箔饰片考论

文章以陇南大堡子山遗址秦动物纹金箔饰片为研究对象,着重分析其构图形式及典型特征。从多元动物纹饰概览入手,详细列举了鸱枭纹、兽面纹、虎纹等动物形象,从纹饰状貌、形象组构、典型特征溯源等角度再现古之工匠造物中的设计智慧,用大历史观视角真实还原秦国工匠对草原文化元素中动物纹饰装饰母题典型特征选取及设计创新。

生态脆弱区农户返贫脆弱性评估及其影响因素--以陇南山区为例

生态脆弱区既是生态环境最敏感区域,也是返贫问题较为集中的区域,返贫脆弱性作为评价农户返贫状况的重要指标,可为生态脆弱区农户的防返贫提供有效借鉴。以地处西秦岭的陇南山区为例,构建农户的返贫脆弱性评价指标体系,并利用微观调查数据,测度农户的返贫脆弱性水平,并利用分位数回归模型揭示其影响因素。结果发现:(1)陇南山区农户返贫脆弱性指数均值为0.103,整体处于中度脆弱水平,等级分布呈“两头小中间大”的橄榄形态势。(2)不同类型农户的返贫脆弱性水平存在分化特征,高山区、农业收入占比高、抚养比高的农户返贫脆弱性较高,且农业收入占比高、抚养比高农户的高脆弱群体占比也高。(3)不同抚养比农户的暴露度与适应能力差异最为显著,敏感性水平则在不同生计方式和抚养比农户中差异最大。(4)家庭规模的扩大可显著增强农户的返贫脆弱性,而交通便利度、网络覆盖率、未来生活预期、帮扶措施多样化和政策帮扶强度的提高可有效减缓农户的返贫脆弱性;政策帮扶强度削弱了高度脆弱农户因交通便利度低所致的返贫脆弱性,帮扶措施多样化则减弱了户主受教育水平高所发挥的降脆效果。

Trace element geochemistry during chemical weathering——As exemplified by the weathered crust of granite, Longnan, Jiangxi

The granite weathering in Longnan, Jiangxi, is represented by mineralogical changes of feldspars · montmorillonite, illite · kaolinite, halloysite · bauxite, with Na, Ca, Si, P, V, U and Sr being in a mobile state while Ti, Al, Fe, Sc, Th, Zr and Hf remaining relatively conservative. With the exception of Zr/Hf, Nb/Ta, Th/Sc, Zr/Nd and Sm/Nb, changes are notable in ratios between most of the trace elements. Re-distribution of REE and Y has

陇南市主要森林类型死可燃物特征及危险性评价

【目的】探究陇南市主要森林类型死可燃物特征,并对森林火灾危险性进行评估,为区域森林火灾预防提供理论支撑。【方法】以陇南市4种主要森林类型为研究对象,分析不同森林类型死可燃物载量、干鲜比、平衡含水率、燃点和热值差异,并采用隶属函数模糊评价法对不同森林类型火灾危险性进行评价。【结果】4种森林类型死可燃物总载量呈油松林>落叶松林>栎类林>华山松林,且油松死可燃物总载量(16.02 t/hm2)显著高于其他3种森林类型(P<0.05),死可燃物中腐殖质和枯落物1载量显著高于枯落物2和枯落物3(P<0.05)。油松枯落物1死可燃物干鲜比显著高于落叶松(P<0.05),枯落物2死可燃物干鲜比最高(58.21%~66.47%),腐殖质最低(51.29%~55.56%)。栎类死可燃物平衡含水率最大,落叶松最小;枯落物3死可燃物平衡含水率最高(16.78%~20.38%),腐殖质层最低(12.22%~13.86%);死可燃物平衡含水率与可燃物直径成正比。腐殖质燃点显著高于枯落物,热值则与之相反(P<0.05)。隶属函数模糊评价结果表明4种森林类型中油松火灾危险性最大,其次是栎类和落叶松,华山松最低。【结论】不同森林类型和组分死可燃物载量、干鲜比、平衡含水率、燃点和热值存在差异。油松可燃物总载量最高,燃点和平衡含水率最低,导致其火灾危险性最大,因此在陇南市森林的经营和林火预防工作中,应加强对油松林可燃物管理。

乡村振兴背景下陇南绿茶产业发展研究

对入选首批“甘味”农产品区域公用品牌的陇南绿茶为例,分析了陇南绿茶产业发展现状。研究表明,在巩固拓展脱贫攻坚成果基础上,基于乡村振兴背景,发展特色乡村产业,充分发挥全国农产品地理标志特点,推动茶产业提质增效,旨在构建优质高效的现代农业服务体系,激活农村创新活力,助力乡村全面振兴,为实现多主体参与、多要素聚集、多业态发展、多模式推进的融合格局奠定坚实的基础。

陇南农产品电商物流存在的问题及对策

为了找出陇南农产品电商物流存在的问题,结合陇南电商发展的实际状况,通过实地调研与访谈的方法,分析当前陇南农产品电商物流所存在的问题,并从强化基础设施建设、提升物流信息化水平、加强农村人才建设等几方面提出相关建议。

基于简化基因组测序评估陇南山羊群体遗传多样性和群体结构

该试验旨在利用简化基因组测序(specific-locus amplified fragment sequencing, SLAF-seq)分析陇南山羊群体遗传多样和群体结构,为陇南山羊后续保种计划的制订提供依据。该研究对50只陇南山羊(公、母各25只)进行全基因组SNP检测;计算观测杂合度(Ho)、期望杂合度(He)、多态信息含量(PIC)、香浓维纳指数(SHI)、基因多样性指数(Nei)及次要等位基因频率(MAF)等6个指标进行遗传多样性评估。结果表明,50只陇南山羊共检测到655514个SNPs位点。陇南山羊的Ho、 He、 PIC、 SHI、 Nei及MAF指标值分别为0.193、0.286、 0.236、 0.449、 0.290、 0.200,说明该群体遗传多样性较低。陇南山羊群体LD值较低,衰退速度较快,说明该群体并未受到过强烈的人工选择压力。此外,PCA与系统发育树结果均表明陇南山羊群体内部出现分化,可分为2个大的亚群。陇南山羊群体平均IBS遗传距离为0.7391,结合亲缘关系G矩阵热图,表明陇南山羊群体大部分个体亲缘关系较远。50只陇南山羊个体共检测到47206个ROH,平均ROH长度37.86 Mb,基于ROH的近交系数FROH范围为0.0535~0.2574,平均FROH值为0.1472,说明陇南山羊群体存在近交风险。可见,陇南山羊内部存在分化,可分为2个大的亚群,陇南山羊群体遗传多样性较低,部分个体间存在较大的近交风险,可能需要采取保种措施保护陇南山羊遗传资源。

陇南山地传统聚落及乡土建筑生成机制研究——以张坝古村为例

在快速城镇化的推动下,我国传统村落地域性要素缺失、识别性差。本文从景观基因理论出发,以传统村落为研究对象,构建出传统村落的景观基因研究体系,以有效保护传统村落的特色空间与建筑特征。以张坝古村为例,结合传统聚落空间模型,本文对其控制(社会、经济、文化要素)、基底(自然背景要素)、基质(建筑等点状要素)、路径(街巷及公共空间等线状要素)、外源(可带动该区域发展的辐射性要素)五大基因进行识别,并总结五大基因的作用机制,构建张坝古村的景观基因图谱,全面总结陇南山地传统聚落及乡土建筑生成机制,综合探索“基因活化”途径。以期保护和传承张坝古村独特的地域文化,激发古村活力,也为其他传统村落景观基因体系的构建提供参考。

陇南市特色农产品品牌建设研究

特色农产品品牌建设是推动农业高质量发展的重要举措。文章从特色农产品品牌建设的内涵出发,分析了陇南市农产品品牌建设存在的问题及其成因,提出了夯实农业发展基础、增强品牌建设意识,提升标准化生产水平、增强品牌核心竞争力,培育创新人才、加强农产品品牌宣传,提高产业集聚度、着力培育龙头企业等对策建议,以期持续推动陇南市农产品品牌建设,实现陇南市农业高质量发展。

基于NDVI数据的陇南市植被覆盖度时空演变

为研究陇南市的植被覆盖变化,基于2001—2020年归一化差异植被指数数据,采用像元二分模型最大值合成植被覆盖度,通过趋势分析、显著性检验,Hurst指数等方法,系统地分析甘肃省陇南市近20年来植被覆盖度的时空演化特征,并对其发展趋势进行预测。结果表明:①陇南市植被覆盖度整体呈现出一个波动性的上升趋势,变化速率在(-0.0417208~0.0479985)/a;②不同地区的植被覆盖度稳定性存在明显的差异,其中植被覆盖稳定不变区域占比7.26%,明显改善区域占比31.12%,严重退化区域占比9.39%;③在植被覆盖演变过程中,持续性和反持续性呈现出交错的分布模式,总体上主要呈现为弱持续性的序列。研究结果可为陇南市生态环境的修复和保护工作提供参考依据。

气象因子对油橄榄多孔横沟象种群动态的影响

采用昆虫诱捕网对陇南市油橄榄多孔横沟象(Pimelocerus perforates Roelofs)种群动态进行了监测,并结合同期气象因子,分析影响其种群动态变化的关键气象因子。结果表明:陇南地区多孔横沟象一年发生2代,主要以老熟幼虫在枝干中越冬,个别出现成虫在枝干中越冬,始见成虫为3月中旬,5月上旬和8月中下旬为盛发期,11月中旬开始进入越冬期。统计分析表明,多孔横沟象在不同危害时期主要影响气象因子不同,3月中旬至5月上旬影响成虫数量的主要气象因子是降雨量(P<0.01),5月中旬至8月下旬成虫数量与平均最高温显著负相关(P<0.01),而在9月上旬至11月上旬温度(平均温度、平均最高温、平均最低温)是该阶段影响成虫数量的关键气象因子,平均温度相关性最强。

基于PSR模型和熵值法的陇南市生态环境保护质量评价

本文以甘肃省陇南市为例,基于PSR模型构建了陇南市生态环境保护质量评价指标体系,采用熵值法对陇南市“十三五”时期生态环境保护质量进行综合评价。结果表明,(1)响应子系统权重值最高,压力子系统权重值最低。(2)从各子系统的评价结果来看,陇南市2016-2020年生态环境保护质量PSR系统中的压力指数、状态指数、响应指数和综合指数总体呈现上升趋势。(3)陇南市2017-2019年生态环境保护质量PSR系统协调度呈现轻微下降趋势,2019-2020年陇南市生态环境保护质量PSR系统协调度呈现上升趋势。基于评价结果,本文提出了优化废水处理机制、开展农业面源污染防治工作、增强生态环境保护意识和加强生态环境保护监督的思考建议,对提升陇南市生态环境保护质量具有一定的参考价值。