黄土沟壑区不同下垫面条件对农田降雨入渗及产流关系影响的研究

作者： 宋孝玉   来源： 西北农林科技大学 年份： 2001 文献类型 ： 学位论文 关键词： 降雨入渗产流   黄土沟壑区   不同下垫面   数值模拟   农田  

描述： 水土资源短缺和生态环境恶化已成为全世界普遍关注的严重问题，这使人们认识到节约用水和保护环境的重要性。为确保粮食安全和生态环境良性发展，必须加强农田水土资源的管理和生态系统重建的研究，处理好水资源利用和生态重建之间的关系，大力推广节水灌溉技术和雨水资源利用技术，以水资源作为主要约束条件，调整农业产业结

全文：—入渗—产流关系的数学模型，得到以下主要结论： 1．本论文野外试验是在中国科学院长武农业生态试验站进行，室内实验是在西北农林科技大学干旱半干旱研究中心进行。在对试验区的土壤机械组成，土壤水分常数

清代乾隆时期自然灾害与荒政研究

作者： 张祥稳   来源： 南京农业大学 年份： 2007 文献类型 ： 学位论文 关键词： 乾隆时期   康乾盛世   自然灾害   灾害史   荒政  

描述： “自古圣王之世，水旱之灾亦时有之”。康乾盛世时期的乾隆朝也不例外，它是我国历史上自然灾害的多发期之一。乾隆朝60年间，自然灾害的种类多，发生的频率高，被及的范围广，涉及的人口多，产生的危害大。面对频仍的自然灾害，乾隆在发出“灾民实可怜”叹息的同时，命令大小官吏，要把民饥民困视作己饥己困，务必以拯灾恤

全文：文献资料、占有材料的基础上，以辩证唯物主义和历史唯物主义为指导，以历史学的实证考察为基本研究方法，理论与实证紧密结合，综合运用计量、归纳、考证、演绎等研究手段。按照选题研究思路，充分利用和吸收自然灾害史

中国古代农家文化研究

作者： 熊帝兵   来源： 南京农业大学 年份： 2010 文献类型 ： 学位论文 关键词： 农家   民生   农业史   传统文化  

描述： od of Warring States (475-221 B.C.), attracting scholars' attention and becoming one of important schools then. After Qin Dynasty, scholars determining to study agriculture carried forward good traditions of Non自is in the Period of Warring States, enriched researching contents and fields, and enabled Non自is to develop in depth. In finial, those determining to study agriculture formed a group with researching agriculture as its distinguishing feature. What the group researched included agricultural ideologies, techniques of farming and cropping, methods of operation and management, measures of fighting and preventing agricultural calamities. The whole group showed its own styles in valuing agriculture and concerning people's livelihood. And those agricultural ideologies, science and technology, methods and spirits composed Nongjia's culture, the cream of which can afford us lessons to solve today's new problems.

全文：整理和出版。 中国古代农家在研究农业的过程中表现出较强的思想性。“三才”理论是农家的重要指导思想,“三才”思想中的“人地”关系和“人天”关系的地位随着农家的发展不断变化,其中的“人天”关系逐步得到强化

中国北方现代人扩散与农业起源的环境考古学观察

作者： 吉笃学   来源： 兰州大学 年份： 2007 文献类型 ： 学位论文 关键词： 文化对环境的响应   BP事件   新旧石器过渡   中晚期过渡   现代人起源   农业起源   新石器   末次盛冰期   7.2   6.4kyr  

描述： 环境考古学是通过环境和文化之间关系的研究来揭示人类如何适应环境变化，如何调整自己的状态以缓解各种压力，从而实现规避风险保全自己的目的，为人类未来的生存和发展提供有益的借鉴。 人类对环境变化的反应一般采取两种策略：一是响应；二是适应。目前，现代人扩散和农业起源是了解和认识人类适应策略的最理想的案例。为

全文：地区的扩散有关。为了寻找现代人类化石，追踪他们向黄土高原腹地迁移和扩散过程，了解现代人类迁移的根本动因，作者等人自2002年以来以甘肃和宁夏为中心进行大范围的野外考察，并依据国外的相关理论建立了人类迁移

明代太仓库研究

作者： 苏新红   来源： 东北师范大学 年份： 2009 文献类型 ： 学位论文 关键词： 太仓库   年例银   北边军饷   盐法   户部   明代财政  

描述： the financial system of the Ming Dynasty was always changing, this dissertation makes research on the state silver Treasury of the Ming Jiajing, Cunji Salt(存积盐effective way to solve this problem was to cultivate generations of gentry scholars with high-level morals. That was the fundamental reason that the Ming country preferred the selection and appointment of virtued talents to the complex and precise construction of the country’s systems. The basic problem of the Ming Dynasty’s tax system did not lie in whether the tax rate was high or low, but lie in the up-grading contradiction between the country’s decreasing ability to collect taxes and the increasing financial need in reality. The standard to measure the Ming Dynasty’s financial system was whether it corresponded to Ming people’s financial ideas and values. Compared with the modern capital society in which the personal interest has its natural justice, Ming China, with the limited productive capability, paid the most possible attention to the living conditions of the maximum current people. Judged by this idea, Ming China’s tax policy aiming to maintain the society’s steadiness and the minimum economic developing level was at least comprehensible rather than preposterous. ) was occasionally sold and the silver got by this was sent to Taicangku due to Taicangku’s financial need. However, this behaviour never became formally systematized. In the Jiajing period, in the dilemma that the forefathers’ governing systems should be maintained and the problem that Kaizhong System(开中制 ) could not effectively meet the north military towns’ financial need, a two-way system was formed gradually, in which Zhengyan(the original amount of salt controlled by the government, 正盐 ) was still kept for the north military towns and Yuyan(the residual salt, 余盐 ) was sold into silver and the silver was sent to Taicangku. Through this system, the Ministry of Revenue collected most of the incomes of the salt system into Taicangku and therefore strengthened its supervision and control towards the Salt Monopoly system. Because of the principle that the income from the Salt Monopoly system should be used to provide the military provisions and pays, which was set up in the early Ming Dynasty, the relationship between Taicangku and the north military towns’ financial expenditures was further strengthened too. All in all, the financial system of the Ming Dynasty was full of life and it kept changing as time went by or under the influences of different historical factors. This transforming process never ceased. Thus the study on the financial system of the Ming Dynasty or even the systems of the traditional China should pay attention to the community’s whole life process that the concerned system lived in. Only in this way can the reforming reasons and the basic conditions of the studied system be understood more clearly. As to the Emperor’s power in the Ming Dynasty’s financial system, it seems that the previous study has exaggerated it. In the Ming Dynasty, it had a clear tendency that the government’s public finances and the emperor’s personal finances separated from each other step by step. In this process, the Ministry of Revenue had a certain amount of administrative power towards Taicangku. Although all the economic decisions should get the emperor’s permission at last, it did not mean that the emperor’s financial power could not be divided or all the institutions under the emperor had only duties but no powers. Most of the previous study on the Ming Dynasty’s economics used the class struggle theory and paid too much attention to the contradictions between the ruling classes and the ruled ones. This dissertation’s study shows that inside the ruling classes there were enduring and profound struggles between the gentry scholars, who paid more attention to the country’s entire benefits, and the interest group with the emperor at the core, who put too much emphasis on their personal interests. The goal of the Ming Dynasty’s finances was to maintain the proper administration of the country by levying the minimum taxes and the ideological essence behind it was to protect the basic physical living conditions of the maximum people. The contradiction between the personal interest and the country’s public benefit was the basic problem in the Ming Dynasty’s financial system. Under the condition of keeping the imperial system unchanged, the comparatively practical and Dynasty, which in Chinese was called “Taicangku”（太仓库） , and aims to draw a line of what Taicangku’s financial system and status were and how they changed as the time went by. In order to show the main vertical line of Taicangku’s evolution, the basic method is to arrange the concerned historical materials in the chronological sequence. As to the bibliography, Mingshilu (《明实录》 ) keeps a complete record from the beginning to the end of the Ming Dynasty, and thus covers the whole developing course of Taicangku, which makes it the core document of this dissertation. Meanwhile, in order to know more precisely about the lateral condition of Taicangku’s financial system and status, this dissertation makes full use of the historical documents on the Ming Dynasty’s systems, such as Zhusizhizhang (《诸司职掌》 ), Minghuidian (《明会典》 ) , Taicangkao (《太仓考》 ), Wanli Kuaijilu (《万历会计录》 ) and so on. Besides, the collected works of Zhao Shiqing (赵 世卿) , Bi Ziyan (毕自严 ), Ni Yuanlu (倪元璐 ), who were the First Lord of the Ministry of Revenue (户部尚书 ), contain many official papers on Taicangku and therefore are important to this dissertation. This dissertation also refers to many other gentry scholars’ personal collected works or official papers. This dissertation’s study shows that Neiku( 内库 ) was an institution both for the government’s public finances and the imperial household’s private finances at the early period of the Ming Dynasty. As Neiku kept reducing its government financial duties and became mainly the setup for the imperial household’s private finances, Taicangku,which was set up in the seventh year of Zhengtong’s reign（正统） , took up more and more public financial duties of the country. Besides, the larger and larger silver need in the north military towns was another reason that Taicangku’s revenue items kept increasing. After a long and slow evolving process in Zhengtong, Jingtai(景泰 ), Tianshun(天顺 ),Chenghua(成化 ) and so on, Taicangku developed quickly in Jiajing(嘉靖 ), Longqing(隆庆 ) and Wanli (万历 ). As Taicangku’s revenue became larger, its financial status got higher and this process reached its peak in the first period of Wanli, when its income in the outside warehouse was used for the regular expenditures in the capital and the north military towns while the silvers in the old and underground warehouses were stored and saved for military emergencies or serious natural calamities. At this period, the income of Neiku was used mainly for the imperial household’s expenses. In the middle period of Wanli, on one hand, the financial need of the north military towns was still expanding while the Ministry of Revenue was no longer capable of enlarging Taicangku’s revenue items and its income amount, which resulted in the bigger and bigger gap between Taicangku’s fixed revenue and the north military towns’ practical financial need. On the other hand, Taicangku’s revenue items and its practical income amount kept decreasing due to the increase of the uncollected taxes and exempted taxes so that it was unable to pay its fixed amount of annual silver to the north military towns. Although the augmentation of new taxes and the borrowings from the old and underground warehouses of Taicangku and the Ministry of Revenue in Nanjing relieved Taicangku from its financial difficulties temporarily, they could neither change the tendency that Taicangku’s income became less and less nor alter the fact that the financial needs of the north military towns kept increasing. The reverse transformations between Taicangku’s practical revenue and the north military towns’ financial needs led to the collapse of the Ming Dynasty’s government finances. Among Taicangku’s spending items, the most important one was the annual silver sent to the north military towns. In the early and middle developing periods of Taicangku, Taicangku’s annual silver was only a part of the Capital’s annual silver(Jingyunyin, 京运银 ). At the end of Jiajing and the beginning of Longqing, Taicangku took up the main duty to provide the Capital’s annual silver. In the early period of Wanli, the issue of Taicangku’s annual silver was ruled by the steady system and this part of silver became a regular component of the north military towns’ financial provisions to maintain their fundamental administration. From then on to Chongzhen, Taicangku’s annual silver and the Capital’s annual silver became one thing. Although the record of Taicangku’s providing the annual silver could be seen in the documents of Chenghua, the record of its yearly provided amount appeared in the first year of Longqing. In Jiajing’s reign, Taicangku had become the important setup to grant the Capital’s annual silver, although there were not enough historical materials to prove that this period’s Capital annual silver was entirely taken on by Taicangku. In Longqing and the early period of Wanli, the yearly amount of Taicangku’s annual silver was steady and the difference between different years was not big; the budget of Taicangku’s annual silver could be realized and there was no big gap between the budget amount and the practical granted amount of Taicangku’s annual silver. From the fifteenth year of Wanli to the thirty-sixth year of Wanli, the yearly amount of Taicangku’s annual silver increased quickly and formed so much financial pressure to Taicangku that the Ministry of Revenue had to borrow silver from its own old and underground warehouses, or from the the silver storehouse of the Court of the Imperial Stud(Taipusi, 太仆寺 ). On the other hand, as Taicangku’s practically colleted revenue became less and less, Taicangku’s practical expenditure of its annual silver became decreasing. From the late period of Wanli to Chongzhen, the annual silver’s budget of the previously built warehouse of Taicangku（ Jiuku， 旧库） stopped increasing and maintained at a relatively steady level. At the same time, the practical silver amount that Taicangku provided to the north military towns reduced quickly and the gap between them became larger and larger. At the end of Longqing and the beginning of Wanli, the proportion of Taicangku’s annual silver and the north military towns’ total amount of military provisions was almost equal to one third. On one side, this rate showed that Taicangku’s annual silver had become very important to the north military towns; on the other hand, this rate also reflected that the provisions of the north military towns were not completely relied on Taicangku’s annual silver and the incomes from the Soldiers’ Field (Tuntian，屯田 )， peasant-transported tax (Minyun, 民运) and salt monopoly, which were two thirds of the whole provisions of the north military towns, were still the fundamental part. The basic financial principle of the Ming Dynasty was to expend according to the income and this year’s revenue and stock were usually expended for the next year. However, in the most years after Jiajing, due to the high financial pressure of the north military towns and the fact that the income was not enough to cover the expending need, the Ming government had to take measures to enlarge Taicangku’s revenue items. As a result, some of the provisional income items or the items that were meant to meet certain emergencies finally became formal and institutional elements of Taicangku’s income. In the most years from the late period of Wanli to Chongzhen, Taicangku’s yearly expenditure frequently exceeded its yearly income. Not only the newly-added revenue could not be collected, but also more and more original amount of income could not be collected. In most of the recorded years from the seventh year of Jiajing until Chongzhen, Taicangku’s yearly expenditures exceeded its yearly revenues. However, in this situation, Ming China’s financial system kept running for more than a century. The first reason was that the editors of Mingshilu had a strong inclination to choose Taicangku’s losing years to record, which strengthened the impression that Taicangku was at a loss for a long period. The second reason was that Taicangku’s revenue amount generally referred to the incomes of the fixed tax items while the borrowed silver from other institutions were included in Taicangku’s expenditures but excluded from Taicangku’s incomes. The third reason was that one of the motive forces of Taicangku’s development was its enlarging financial expenditures. The last reason was that Taicangku’s value to the Ming government’s financial system, especially to the north military towns’ militrary provisions and pays, was not fundamental but subsidiary. Finally, the history of the evolving relationship between Taicangku and Salt Monopoly system showed that the Jiajing period was the watershed of their financial relationship. Before

全文：理论来进行的明代经济史研究,大多关注统治阶级与被统治阶级的矛盾。本文的研究表明,在统治阶层内部,更加注重国家整体利益的官僚士大夫和过分强调私人利益的、以皇帝为核心的利益团体之间存在长久而深刻的矛盾

中国古代害虫观念与防治技术研究

作者： 龚光明   来源： 南京农业大学 年份： 2010 文献类型 ： 学位论文 关键词： 观念   防治技术   农作物害虫   中国古代  

描述： 中国古代以农立国,农业丰歉直接关乎社会稳定、人类幸福。因此,农业害虫一直受到关注,人们不断探索、总结其规律及应对措施。在生产实践中,害虫观念、防治技术在继承的基础上不断发展与更新。不同时期害虫观念的变化对防治政策的制定及防治技术的实施产生深远影响。 古代农业害虫以蝗、螟、好蚄及未知名害虫为主,次数依

全文：的原理有了深刻的认识,认为禾苗扎根在细实的土壤中,便于吸收水肥等资源,生长茁壮,增强抗虫的性能。陈勇的“地力常新壮”理论主张施肥要因时、因地、适量,庄稼长势旺盛,自然不生害虫。除主要关注传统害虫外,宋元对

清末民国时期农会组织研究

作者： 李永芳   来源： 四川大学 年份： 2007 文献类型 ： 学位论文 关键词： 农会组织   活动   清末民国时期   性质   特点   发展  

描述： 近代中国是一个由传统社会向现代社会转型的大变革时代，其中一个重要内容就是农民从传统的血缘关系、宗族组织中解放出来，逐渐成为农村社会政治经济关系的主体，而农会作为超越宗族关系的社会组织则在这一变迁过程中有着十分重要的意义。本文对于清末民国时期农会组织的发展状况，分为以下五个方面进行了探讨。 一、清朝末

全文：起来的。1921年9月成立的浙江萧山衙前农民协会是中国现代史上第一个具有鲜明阶级色彩、以解决农村社会矛盾为已任的新型农会。随后，广东海丰赤山、湖南衡山岳北等地农民协会相继建立。1924年1月国共合作实现后，国民党

明清时期巢湖流域农业发展研究

作者： 陈恩虎   来源： 南京农业大学 年份： 2009 文献类型 ： 学位论文 关键词： 农业经济   农业发展   明清   巢湖流域  

描述： 区域农业经济研究是目前经济史研究的热门课题,至今已有许多成果问世。相对而言,巢湖流域农业经济的研究较为滞后,并且研究领域和成果比较分散,尚未形成全面、系统的研究体系,其主要原因应当是学术界常常会以明清时代的巢湖流域与全国其他区域相比不具备“典型性”为由,漠视了对巢湖流域的经济研究。因此,努力填补明清

全文：,还借助历史地理学、社会学、经济学以及统计学等多学科的理论与方法。由于研究对象囿于明清时期巢湖流域的农业经济,因此特别注重运用历史地理学的方法来考察农业变迁,从时间序列与空间差异方面对于研究所需资料