Application of Google Earth in Modern River Sedimentology Research

Google Earth, a software based on satellite’s images and database of navigation, gains features of high resolution, integrated images, quick update, convenience, simpleness and free cost. Practice of this software shows that it plays an important role in mapping, construction and river research. Based on the fundamental features of Google Earth, this passage makes an introduction to its application in studying modern river sedimentology through the case study of the Yellow River. The results show that Google Earth satellite’s high-resolution images and image overlay functions make it easy for users to quickly navigate river, determine the type of river, track the river flows and measure the terrain slope;the software’s “Ruler” and “Add Path” functions make it easy for users to measure channel width, curvature, amplitude, wavelength, size, morphology of point-bar and other river parameters;the software’s “Historical Image” function has important significance in the study of modern river migration, sedimentary evolution and river geomorphological shape during different seasons.

Pollen Assemblage Features of Modern Water Samples from the Shiyang River Drainage, Arid Region of China

Pollen analysis of 30 modem water samples from the Shivang River, an internal river system located between the Tengger and Badain Jaran deserts, Northwest China was carried out to examine the river's capacity to carry pollen and spores, and to assess the contribution of the water-borne pollen to pollen assemblages in lake sediments at the end of the river system. Results indicate the pollen assemblages in water samples consist of both local and upland pollen. Percentages of upland pollen reach 30% - 60%, and pollen assemblages in water samples do not indicate the nature of local vegetation at the sampling sites. Fluvial currents have the capacity to transport large quantities of pollen long distances, and the contribution of this fluvial transported pollen is relatively high, For example, percentages of Picea Dietr. pollen in water samples at sampling sites 130 km and 145 km away from Picea forests reach 16.5% and 7.7%, respectively. Fluvial pollen transport occurs primarily during flood periods, and pollen concentrations from the flood samples are 17.1 - 12.5 times those from normal fluvial flow. Reservoirs affect pollen transportation since pollen is deposited at reservoir inlets and pollen concentrations are much reduced at reservoir outlets. Human activity can thus change natural features of pollen transportation and deposition. The main factors influencing pollen concentrations and assemblages are sampling time, sampling location, and rainfall intensity.

Evolution history and trend of the modern Huanghe River Delta

The evolvement history of modern Huanghe River Delta tidal flat, coastline and underwater terrain were studied based on the analysis of remote sensing images and water depth data. Based on the analysis of seafloor terrain evolution on different historical stages, a formula simulating the erosion and deposition evolvement model of subaqueous Huanghe River Delta slope was proposed, and the evolvement trend of the subaqueous delta terrain was predicted. The result shows that the equilibrium transition zone is near the water depth of 12 m with seabed erosion in shallower water and accumulation in deeper water during the first 150 a after the river channel was deserted. In the meantime, the underwater slope became gentler and the coastal erosion rate became slow gradually. Then, the subaqueous delta slope changed to up concave from upper convex, and the shape of subaqueous delta disappeared. The coast type changed to silt-mud coast about 100-150 a after the river course was deserted. The erosion depth in the foot of the seawall is calculated based on the formula.

The sedimentary facies and dynamic environment of the Diaokou lobe in the modern Huanghe River Delta of China

The Huanghe River captures the Diaokou River in 1964 and forms a deltaic lobe in the subsequent 12 a. The progradational process of the Diaokou lobe is in associated with complicated evolution of riverine sheet flooding, merging, and swinging. On the basis of 11 borehole cores and 210 km high resolution seismic reflection data set, the sedimentary sequence and dynamic environment of the Diaokou lobe Cone subdelta lobe of the modern Huanghe River Delta） are studied. The stratigraphy of the lobe is characterized by an upward-coarsening ternary structure and forms a progradational deltaic clinoform. Totally six seismic surfaces are identifiable in seismic profiles, bounded six seismic units （SUs）. These SUs correspond to six depositional units （DUs） in the borehole cores, and among them, SUs 4-6 （DUs D to F） consist of the modern Diaokou lobe. Lithological and seismic evidences indicate that the delta plain part of the Diaokou lobe is comprised primarily by fluvial lag sediments together with sediments from sidebanks, overbanks, fluvial flood plains and levees, while the delta front part is a combination of river mouth bar sands （majority） and distal bar and deltaic margin sediments （minority）. As a result of the high sedimentation rate and weak hydrodynamic regime in the Huanghe River Delta, the sediments in the delta front are dominated by fine-grained materials. The grain size analysis indicates the Huanghe River hyperpycnal-concentrated flow shows the suspension, transportation and sedimentation characteristics of gravity flow, and the sediment transportation is primarily dominated by graded suspension, while uniform suspension and hydrostatic suspension are also observed in places. The strength of the hydrodynamic regime weakens gradually offshore from riverbed, river mouth bar, sidebank, distal bar subfacies to delta lateral margin and flooding plain subfacies.

Inversion and Prediction of Consolidation Settlement Characteristics of the Fluvial Sediments Based on Void Ratio Variation in the Northern Modern Yellow River Subaqueous Delta, China

The modern Yellow River delta is formed near the estuary of the Yellow River with the characteristics of short formation time, efficient sedimentation rate and loose structure which make sediments prone to be compacted and consolidate under the geostatic stress and overburden stress. It is one of the key areas with land subsidence disasters in China, bringing a series of safety hazards to production and living. Based on the data of massive surface cores and ten drill holes ranging from 12 to 40 m obtained from the northern modern Yellow River subaqueous delta, the inversion method suitable for the calculation of consolidation settlement characteristics of the modern Yellow River subaqueous delta is discussed, and the consolidation settlement characteristics of the delta sediments are inversed and predicted in this paper. The actual void ratio of the delta sediments at the depth from 3 to 15 m shows a significant power function relationship with the depth, while the void ratio of the sediments below 15 m changes little with depth. The pre-consolidation settlement(from deposition to sampling) of the delta sediments is between 0.91 and 1.96 m, while the consolidation settlement of unit depth is between 9.6 and 14.0 cm m^(-1). The post-consolidation settlement(from sampling to stable) of the subaqueous delta sediments is between 0.65 and 1.56 m in the later stage, and the consolidation settlement of unit depth is between 7.6 and 13.1 cm m^(-1) under the overburden stress. The delta sediments with a buried depth of 3 to 7 m contribute the most to the possible consolidation settlement in the later stage.

Evolution of Modern Yellow River Delta Coast

This paper deals with the development and evolution of modern Yellow River delta and the erosion or deposition rates of its different sections. In June, 1996, Yellow Rivers terminal course was artificially turned eastwards to empty into the sea and then the 11th lobe of the modern Yellow River delta began to form. This course change may mark the beginning of the 3rd subdelta formation. As a result of that, the Yellow River delta advances towards east by north with the 1st, 2nd and 3rd subdeltas arranged in succession. Coast zone in the deltaic area is divided into 7 different sections according to their different erosion or deposition rates: the relatively stable section from Dakou River to Shunjiang Stream, the weakly retreating section from Shunjiang Stream to the Tiaohe River mouth, the strongly retreating section from the Tiaohe River mouth to the station 106, the artificially stable section due to stone dam protection from the station 106 to Gudong Oilfield, the strong deposition section from Gudong Oilfield to Dawenliu Haipu, the weakly deposition section from Dawenliu Haipu to the Zimai Stream mouth, and the stable section from the Zimai Stream mouth to the Jiaolai River mouth. It is predicted that the erosion and deposition situations of the sections will nearly remain the same in 10 years, but the retreating and silting-up rates will tend to become slower gradually. Human activities have an evident influence on the changes of the coastline.

Estimation on wetland loss and its restoration potential in Modern Yellow River Delta,Shandong Province of China

Wetland is one of the most important ecosystems with varied functions and structures,and its loss has been a major issue.Wetland loss in Modem Yellow River Delta(MYRD) becomes a serious environmental problem,so its restoration attracts a great deal of attention from academia and governments.This article proposes a GIS-based multi-criteria comprehensive evaluation methodology for potential estimation of wetland restoration,using MYRD as an example.The model uses four kinds of data(hydrology,terrain,soil,and land use) and could be adapted by planners for use in identifying the suitability of locations as wetland mitigation sites at any site or region.In the application of the model in the MYRD,the research developed a lost wetland distributed map taking the better wetland situation of 1995 as the reference,and elevated the overall distribution trends of wetland restoration potential based on wetland polygon.The results indicated that the total area of wetland loss from 1995 to 2014 was 568.12 km^2,which includes 188.83 km^2 natural wetland and 21.80 km^2 artificial wetland,respectively.The areas of lost wetland with low,middle,and high resilience ability are 126.82 km^2,259.92 km^2,and 119.59 km^2,occupying 25.05%,51.33%,and 23.62%,respectively.The high-restoration-potential wetland included98.47 km^2 of natural wetland and 21.12 km^2 of artificial wetland,which are mainly bush,reed,and ponds.The highrestoration-potential wetland is mainly distributed in the vicinity of Gudong oil field,the Yellow River Delta protected areas,and the eastern sides of Kenli county and Dongying city.

Problems in the Development of Plateau Modern Agriculture in Tibet“One River and Two Streams”Agroecological Basin and Countermeasures

Tibet Autonomous Region is located in the southwest of China. As a special area with high altitude,low temperature,abundant and diverse resources,the development of agricultural modernization has itself development attribute and feature. Agricultural development area of Tibet mainly concentrates in the " one river and two streams" basin. In this paper,combining the development of modern agriculture on the plateau,the connotation and characteristics of the development of plateau modern agriculture are illustrated from the angle of environment economics. Based on the observation method,linking theory with practice and combining literature research method,descriptive study is conducted,and the specific problems in the development of plateau modern agriculture in the agricultural basin are found. For example,the development of agriculture in Tibet has low utilization rate of resources and unbalanced distribution,agricultural mechanization shows gradient development,productivity and agricultural extension are backward,efforts to promote innovation and science knowledge are not enough,agricultural pollution expands,and the awareness of environmental protection is low. In view of the above problems,we put forward some countermeasures and suggestions: developing local advantage characteristic agriculture,developing cooperative economic organization,establishing the training promotion mode of theory combining with practice,establishing agricultural industry system of sightseeing tourism ecology. The research could provide theoretical suggestions for the future development of plateau modern agriculture.

Biogenic Sedimentary Structures of the Yellow River Delta in China and Their Composition and Distribution Characters

The biogenic sedimentary structures （i.e., the morphology and trace makers of burrows, tracks, trails and traces made by extant organisms） and their composition and distribution characters in different micro environments and sub environments of the Yellow River delta in China are described. Three ichnocoenosis can be recognized： （1） Steinichnus-like ichnocoenosis, includes F, Y-shaped traces, birds＇ footprints on bedding plane, and Y, U-shaped burrows in intrastratal bedding, produced by Coleoptera （Heteroceridae）, Orthoptera （Gryllotalpidae） and birds. It is majorly found at the delta plain point bar deposits, denoting the fresh water-related terrestrial environments. （2） Steinichnus-Psilonichnus-like ichnocoenosis, consitsis of Steinichnus-like traces on the bedding plane and Psilonichnus-like burrow which a vertical, irregularly J-, Y-, or U-shaped burrows, some of them with bulbous basal cells burrows in the intrastratal bedding, created by Coleoptera （Heteroceridae）, Orthoptera （Gryllotalpidae） and crabs. It is observed in the delta plain abandoned distributary channels, and the delta front tidal creek and subaquous distributary channels, indicating the brackish water environment. （3） Palaeophycus-like ichnocoenosis, includes the round entrance burrows or with craters-shaped loop-protrusionsand and the parallel forked trails on the bedding plane, and the U, J or vertical shaped feeding burrows are in the intrastratal bedding, majorly produced by the clam （bivalve molluscs）, gastropods and Nereis. It is present in the subaqueous interdistributary bay, reflecting the intertidal related environment.

Using a modern analogue to interpret depositional position in ancient fluvial-tidal channels:Example from the McMurray Formation,Canada

The fluvial-tidal transition(FTT)is a complex depositional zone,where fluvial flow is modified by tides as rivers approach a receiving marine basin.Variations in the relative importance of tidal versus fluvial processes lead to a distinctive distribution of sediments that accumulate on channel bars.The FTT generally consists of three broad zones:(1)a freshwater-tidal zone;(2)a tidally influenced freshwater to brackish-water transition:and(3)a zone of relatively sustained brackish-water conditions with stronger tides.A very common type of deposit through the fluvial-tidal transition,especially on the margins of migrating channels,is inclined heterolithic stratification(IHS).At present,a detailed account of changes in the character of IHS across the FIT of a paleo-channel system has not been reported,although a number of modern examples have been documented.To fill this gap,we quantitatively assess the sedimentology and ichnology of IHS from seven cored intervals in three geographic areas situated within the youngest paleovalley("A"Valley)in the Lower Cretaceous McMurray Formation of Alberta.Canada.We compare the data to trends defined along the FTT in the present-day Fraser River in British Columbia.Canada to interpret paleo-depositional position in the ancient fluvial-tidal channels.Analysis determined that the mean mudstone thickness is 8.2 cm in the southern study area(SA).Mean thickness increases to 11 cm in the central study area(CA),and decreases again to 4.4 cm in the northern study area(NA).The proportion of mudstone is 31%in SA,44%in CA,and 27%in NA.Thicknessweighted mean bioturbation intensity in sands varied from 0.29 in SA and CA.to 0.28 in NA.On the other hand,thickness-weighted mean bioturbation intensity(Bl)in mudstone increases from 1.46 in SA.to 1.77 in CA.and is 1.94 in NA.The ichnological diversity also increased from south to north.Sedimentological results show sinilar trends to those of the Fraser River,enabling the identification of a freshwater to brackish-water transition zone with tidal influence.The interpreted position of the transition is underpinned by the bioturbation intensity and trace-fossil diversity trends,indicating periodic brackish-water conditions throughout SA in the McMurray Formation during low river flow conditions.Together,these data suggest that a broad FTT existed in the"A"Valley,with fluvial-dominated channels to the south that experienced seasonal brackish-water inundation during base flow,and channels experiencing increasing brackish-water influence lying further north towards a turbidity maximun zone.The FIT zone appears to have extended for several hundred kilometers fron south to north.Based on the sedimentological and ichnological data,as well as estimations of lateral accretion rates,we refute the colmonly applied Mississippi River depositional analogue for McMurray Formation channels.Rather,we show that while not a perfect fit,the tidally influenced Fraser River shows much greater agreement with the depositional character recorded in McMurray Formation IHS.Future work on the McMurray system should focus on characterizing tide-dominatecl deltaic and estuarine systems,such as the Ganges-Brahmaputra,and on forward-modeling the evolution of tide-dominated and tideinfluenced river systems.

数字素养对小农户衔接现代农业的影响研究——基于黄河流域9省区1592户小农户的调查

基于黄河流域9省区1592户小农户的调研数据,利用LPM和Probit模型分析数字素养对小农户衔接现代农业的影响。结果表明:数字素养的提升能够促进小农户衔接现代农业;机制分析发现,数字素养通过拓宽小农户信息获取渠道、提高小农户信息获取能力来影响小农户衔接现代农业;引入ESRM模型结合反事实推断分析发现,数字素养提升可以使小农户衔接现代农业的水平提高45.33%;小农户数字素养对地理邻近农户衔接现代农业的行为具有正向空间溢出效应;异质性检验发现,数字素养对衔接现代农业的影响在纯小农户中最大,其次是兼业型小农户,数字素养对中低收入小农户衔接现代农业的影响要大于高收入小农户。根据结论,提出加强对小农户的数字化培训和指导以提升其数字素养,对不同类型小农户有针对性地提供帮扶措施,通过示范效应带动周边小农户衔接现代农业等政策建议。

现代珠江三角洲前缘生物遗迹组成与分布特征

【目的】珠江三角洲前缘受河流、波浪和潮汐等因素共同影响,沉积环境复杂,沉积特征丰富,前人大多关注珠江三角洲前缘物理化学沉积特征的研究,然而生物对环境的响应极其灵敏,造迹生物及其产生的生物遗迹在一定程度上反映了研究区内的沉积环境特征。【方法】选取珠江三角洲前缘为研究区,运用现代沉积学及遗迹学方法,通过盐度、粒度、浑浊度分析及X射线计算机断层扫描和计算机重构方法对采取的岩心进行处理,对研究区内不同微环境中的生物遗迹特征进行了精细的研究。【结果】(1)主要造迹生物有双壳类动物沙蚬、节肢动物门寄居蟹、甲壳类动物螃蟹、环节动物门双齿围沙蚕、脊索动物门弹涂鱼等;(2)各微环境生物在层面上营造的生物遗迹主要包括爬行迹、足辙迹、鸟足迹以及排泄迹等,层内的主要遗迹为居住迹,表现为各种类型的潜穴形态如Y型、L型、U型,少量I型;(3)珠江三角洲前缘生物遗迹的分布特征:研究区内现代生物遗迹在水下汊道和岛屿的分异度、丰度及扰动率较分流间海湾高,潮下带位于平均低潮线以下,不便观察。【结论】该研究将补充珠江三角洲前缘的现代沉积学资料,并为三角洲前缘古遗迹学和三角洲前缘古沉积环境重构提供现代实证基础和依据。

构建高质量发展的城市群国土空间治理体系再思考——以长三角城市群与粤港澳大湾区为例

城市群作为承载国家发展战略的关键空间载体,其高质量发展需要现代化的国土空间治理体系作为支撑。文章以城市群高质量发展为切入点,辨析了区域高效治理是适应高质量发展的关键变量,进一步梳理了迈向国土空间治理现代化的历史逻辑、理论逻辑和实践逻辑,提出“目标-特征-行动”的研究框架,界定面向高质量发展的城市群国土空间治理体系的核心内涵;进而,以长三角城市群和粤港澳大湾区为例,梳理在区域规划和产业协同维度上的国土空间治理实践经验,厘清在治理结构、空间布局、政策保障等方面所面临的关键挑战,比较2个案例在目标侧重、主要特征、行动策略等维度上的差异,前者锚定高质量一体化目标,凸显“共同富裕”特征,重视内部协同治理;后者侧重于开放型经济与全球化发展,凸显“和平发展”特征,关注跨境合作治理;最后,提出面向高质量发展的城市群国土空间治理的政策建议:即目标导向的尺度重构、特征引领的“三生融合”及行动方案的政策创新。

黄河流域农耕文明的起源与发展

黄河横贯中国东西,在中下游地区形成了肥沃的冲积平原,流域内气候条件优越,是天然的文明摇篮。自六十万年前起,以蓝田人为代表的古人类便生活在黄河流域的富饶之地,在生活中逐步掌握了农作物种植技术,并由游牧转为定居,逐步发展出灿烂的农耕文明。在长期的农业生产实践中,我国古人不断对农业生产经验进行继承和总结,在开发利用自然资源的同时,也认识到了保护自然的重要性,形成了人与自然和谐发展的生产观念,对于现代农业文明有着长足的指导意义。我们应当积极汲取黄河流域农耕文明的有益因素,促进现代农业文明的进一步发展。

现代城市规划建设再赋能大运河文化生命力的路径研究

大运河文化是一种“活”的、“发展”的、体现城市性和人民性的文化。作为一种线性文化遗产,大运河文化在沿线传统城市、村落形成过程中“滋生”、兴旺。近年来,大运河的遗产化进程进一步促进了大运河功能与价值的延伸与转化。推动大运河文化创造性转化、创新性发展,既要注重大运河文化的整体性,又要突出沿线城市河段的文化地域性,还要充分考虑到文化遗产的特殊性。采用文献研究法和实地调研法,分析了城市发展对大运河文化孕育与演进的价值所在,进而梳理出大运河文化中所包含的三类文化生命力。研究结果表明,大运河文化的保护、传承与利用,与沿线城市发展密不可分的,不仅仅体现在大运河对城市文化的单向赋能,同样体现在城市发展对大运河文化生命力的再赋能。来自京杭大运河重要河段之杭州余杭塘河的实证研究显示,可以通过现代城市的规划建设,实现对大运河文化的自然生命力、经济生命力、人文生命力等诸要素的再赋能。

常州春江江鲜烹饪技艺的现代化创新策略研究

常州春江江鲜烹饪技艺作为常州非遗文化遗产,是江边渔民生活方式的重要体现,具有深厚的历史文化内涵和鲜明的地域特色。但是随着长江生态环境的污染和破坏、文旅产业的发展以及人们饮食习惯的变化,常州春江江鲜烹饪技艺也面临着严重的传承和创新发展困境。基于此,本文在分析常州春江江鲜烹饪技艺内涵的基础上,针对常州春江江鲜烹饪技艺的传承和发展现状,从食材选择与搭配、烹饪工艺、菜品种类与风味等方面探索常州春江江鲜烹饪技艺的现代化创新,旨在提升春江江鲜菜品的品质,满足现代消费者个性化、多样化的口味需求,同时推动常州春江江鲜烹饪技艺的传承与发展。

黄河三角洲浅地层扰动的空间差异及其主控机制

现代黄河水下三角洲是油气开采、海底管道铺设等基础设施建设的重要地区,随着黄河经历多次改道,不同河口海域的泥沙供应、海洋动力以及人类活动等条件发生显著变化,黄河三角洲不同河口地区沉积演化出现明显差异,其地层结构的变化备受工程人员及研究学者的关注。本文基于2023年浅地层剖面数据,以整个现代黄河三角洲及其分区(刁口-神仙沟河口、现行河口、清水沟河口)为研究对象,研究黄河三角洲浅地层扰动空间分布特征,对比3个河口区浅地层扰动的差异性,结合不同河口区的泥沙供应、海洋动力等资料,揭示地层扰动差异性的主控机制。研究结果表明:(1)从典型地层扰动区的基本特征来看,黄河三角洲地区的扰动地层的总体分布呈现出随水深的增加而逐渐减少的规律。不同河口区扰动地层差异显著,其中刁口-神仙沟河口的扰动地层主要表现为数量多、埋藏深度浅的特征;清水沟河口的扰动地层以聚集分布、埋藏浅、发育规模大等为特征;而现行河口海域扰动地层以埋藏深、数量少为主要特征;(2)黄河三角洲不同区域的地层结构受入海泥沙和海洋动力等因素的影响,具有明显的空间差异性。波浪的高底剪切应力分布与地层扰动高密度区分布高度一致,波致底剪切应力是影响3个河口区域以及不同水深地层结构差异的主要动力因素,而入海泥沙供应则导致不同河口区扰动地层埋深有所差异。

近代金沙江航运及贸易

从地理、技术、经济的角度考察金沙江水系的水文特征、渡口分布、船舶和浮具形制、航运与贸易的关系,可以发现,金沙江航运开通的受益者除了中央政府、地方政府,还有川滇藏诸省的商民。粗略估算,金沙江流域历史上出现过的渡口至少有147个。跨越金沙江的川滇东路和西路贸易以渡口和码头为转运枢纽,通过水陆联运方式沟通县际、省际以及国际贸易,构成了一个具有地方特色、民族特色的区域市场。今天,由于高速公路、铁路的快速发展,城市之间已经形成立体交通网络,传统意义上的渡口、码头、港口功能实现现代化升级,但在局部地区航运依然具有方便、廉价、重载的优势。同时,一些古渡口具有不可替代、不可再生的历史、艺术以及科学价值,是实证中华五千年文明史的重要文物资源。因此,应加强古渡口遗址保护,可考虑建立水运博物馆和遗址公园,以此展现我国西南各民族文化融入中华文明的历史进程,展现南方丝绸之路的水上风貌,从而构建中华文明的西南水上标识体系。

乡村都市化:理论思考与珠三角的实践

文章在乡村都市化这一概念的基础上,对乡村都市化相关的理论进行了思考。并结合历史上与国内外的乡村发展历程,提出乡村都市化是中国乡村发展的必要路径。这主要是基于中国在发展过程中所呈现出的两个问题:一是过密化、市场网络断裂和人口迁移的限制;二是工业化与城市化发展不同步。文章以珠三角为案例,探讨了珠三角地区自改革开放以来,在乡村都市化过程中的不同阶段,并为珠三角地区乡村都市化再研究提出了问题与方向。乡村都市化研究需要与乡村振兴以及中国式现代化相结合,才能在未来进行更有针对性的相关学术研究。

农业科技创新投入对农业现代化的影响研究——以黄河流域为例

根据黄河流域2011—2020年省级面板数据,首先用熵值法对黄河流域农业现代化水平进行测算,之后运用OLS模型实证分析该流域农业科技创新投入和农业现代化的影响。结果表明:(1)黄河流域农业现代化指数均值为0.399,处于起步阶段,且在2011—2018年表现出上升趋势;但在2018—2020年出现下降,这为黄河流域农业现代化发展蒙上了阴影。各区域中,下游的农业现代化发展综合指数均值明显大于中游和上游,其中上游的发展指数最低。各省、自治区中,山东省、内蒙古自治区和河南省的农业现代化综合发展指数均值高于其余省(区),甘肃省的综合发展指数均值最低。(2)农业科研资金投入规模对黄河流域整体及下游农业现代化发展的影响均显著为正,对上游和中游有显著的负向影响;农业科研资金投入强度对黄河流域及上游、中游农业现代化发展的影响显著为正,对下游的影响显著为负;农业科研人力投入对黄河流域及上、中、下游农业现代化发展的影响均显著为正。