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11.
浙江青田县龙现村稻鱼共生系统作为全球重要农业文化遗产,其保护和可持续发展的问题现已引起了社会的关注。在调查研究的基础上,分析了青田县龙现村稻鱼共生系统得以长期延续的历史渊源、自然环境条件和人文社会因素等原因。同时,指出了这种稻鱼共生模式在当今市场经济条件下面临的挑战与问题,如市场问题、产业化问题、旅游业发展导致的环境问题、农业文化消失问题等。最后提出了一系列对策措施,如加强全村生态规划,建立稻鱼共生自然保护区,打造稻鱼生产品牌,适度发展农业生态旅游,建立多方参与机制等措施。 相似文献
12.
基于世界遗产监测经验的全球重要农业文化遗产监测体系构建 总被引:1,自引:0,他引:1
为了保护具有全球重要性的传统农业系统,联合国粮农组织于2002年发起全球重要农业文化遗产(GIAHS)保护倡议。经过十几年的发展,中国目前拥有的GIAHS数量最多,但也面临着GIAHS科学保护与有效管理的艰巨任务。作为遗产管理的重要内容,监测对提升遗产管理水平具有重要作用。科学有效的遗产监测不仅可以实现遗产自身的保护及其价值的维护,而且可以实现遗产地的可持续发展。然而,我国的GIAHS监测工作刚刚起步,尚未建立一套科学完善的GIAHS监测体系,也缺乏相关理论研究作为支撑。为此,本文在充分借鉴世界遗产监测经验与实践的基础上,对GIAHS监测概念与内涵、监测范围与内容、数据收集与管理等关键问题进行了详细阐述,并提出由三级监测网络、动态监测系统和两级巡视制度构成的GIAHS监测体系。动态监测系统是GIAHS监测体系的核心组成,包括监测范围、监测内容、监测方法、数据管理的多个方面。三级监测网络和两级巡视制度是GIAHS监测体系的基础保障,不仅有助于形成主动监测与监督巡视相结合的监测巡视机制,而且将监测数据汇交与评估意见反馈形成闭合回路,从而提高GIAHS保护与管理工作的科学性与系统性。研究结果不仅有助于丰富GIAHS监测理论,进一步推动中国的GIAHS监测工作,也能为国际GIAHS监测提供中国经验。 相似文献
13.
本文通过介绍基于J2EE技术框架的林业经济信息系统的构建,指出了为林业经济信息的集成与共享提供一个基础平台的重要作用与意义,以及其构建的方法与步骤。 相似文献
14.
Ian Jeffreys 《Small-Scale Forestry》2004,3(1):99-117
Small-scale farm forestry has the potential to offer many benefits both to landholders and the wider community. As with all
changes in land-use practices, there are associated benefits and costs and these are not uniformly distributed. They have
varying impacts on the different values, aspirations, goals and objectives that exist within the community. Furthermore, the
community does not consider these values, aspirations, goals and objectives of equal importance. The degree of concern can
vary from minor to high and overriding all other considerations. When evaluating farm forestry options it is necessary to
address all of these concerns. This paper examines the combined use compensatory and non-compensatory multi-criteria analyses
to evaluate forestry options, in a case study for the Darling Downs region of Queensland, Australia. These aggregation techniques
are found to be highly complementary and together provide a comprehensive analysis. The compensatory technique provides a
sound measure of overall performance of a forestry system, whereas the non-compensatory technique alerts decision-makers to
presence of particularly poor performance with respect to individual criteria. The compensatory technique used is simple and
understandable even for those with non-mathematical backgrounds. This analysis can identify and aid communication of the relative
benefits and costs, and trade-offs, between economic, environmental and social considerations. 相似文献
15.
An Erratum has been published for this article in Aquatic Conservation: Marine and Freshwater Ecosystems 12(2), 2002 577
- 1. This research extends techniques of predictive mapping from their application in terrestrial environments to marine landscapes by investigating the relationship between seagrass and hydrodynamics in Core Sound, North Carolina, USA.
- 2. An empirically derived logistic multiple regression model and a Boolean logic suitability model were used to produce several predictive map products, including: susceptibility of seagrasses to storms, probability of seagrass cover, and suitability of areas for restoration of seagrasses. A visual comparison between these maps and conventional seagrass polygon maps allows for a discussion of ‘field’ versus ‘object’ mapping, and the ramifications for management based on different cartographic techniques.
- 3. The predictive method used here showed that only a small portion (19%) of the seagrass bed in the study area would be expected to have a high probability of seagrass coverage. The majority of the seagrass habitat in the study area was predicted to have less than 50% probability of seagrass cover. In addition, 16% of the nearly 2000 ha of seagrass within the study area were predicted to be highly susceptible to acute storm events. Moreover, using a conservative set of site selection criteria, only 7% of the study area encompassed by seagrass habitat was predicted to have a high probability of successful restoration if injured.
- 4. This method provides for an inexpensive way to scale‐up from high‐resolution data to a coarser scale that is often required for conservation and management.
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Maarten L.A.T.M. Hertog David R. RudellRomina Pedreschi Robert J. SchafferAnnemie H. Geeraerd Bart M. Nicolaï Ian Ferguson 《Postharvest Biology and Technology》2011,62(3):223-237
According to the dictionary, a system is something like “a group or combination of interrelated, interdependent, or interacting elements forming a collective entity”. In postharvest, fresh harvested food crops can be considered isolated small scale systems. Postharvest research aims to understand the quality of these ‘systems’ as influenced by postharvest conditions. The phenotypic quality of horticultural produce is based on genetic traits that are expressed through a cascade of reactions subject to complex regulatory mechanisms and diverse environmental conditions. Ultimately, to fully understand postharvest phenomena, a systemic approach that links genetic and environmental responses and identifies the underlying biological networks is required. Thanks to the development of high throughput omics techniques such system-wide approaches have become a viable option to support traditional postharvest research. This review provides an overview of systems biology and how it can lead postharvest research into a new era. 相似文献