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This paper describes a role playing planning exercise that has been used for training agriculturists, engineers and agricultural economists for more than ten years. It sets out the objectives and key features of the exercise and the experience that has been gained in its use. The exercise has been found to successfully test and integrate subject matter expertise acquired from formal teaching. It also highlights the multiple and often conflicting objectives of irrigation planning, and the need for full evaluation of alternatives and sound technical judgements under conditions of inadequate data and time pressure. The exercise is also successful in developing professional personal skills such as group working, interviewing and presentation, and is recommended as an effective training aid. 相似文献
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气候变化适应及其影响因素研究——山东胶州湾地区居民的实证分析 总被引：1，自引：0，他引：1
为探索气候变化感知在适应决策过程中的作用机理,本研究以深度访谈数据为基础,基于“感知－适应”分析框架,采用二元Probit模型和泊松回归模型,分析胶州湾地区居民气候变化适应决策和适应选择的影响因素。研究表明,胶州湾地区绝大多数居民已经感知到气候变化,半数以上居民采取了一定的适应措施,大多数居民对适应措施效果的感到满意。居民采取适应措施介于0-4项,平均为1.07项,适应措施的普及率和多样化仍有提升空间。影响胶州湾地区居民气候变化适应决策与适应选择的主要因素存在一定差异性,但“居民对气候变化的感知”不论是对适应决策还是对适应选择的影响都较大,其中又以“对降水变化的感知”和“对气象灾害损失的感知”最为显著。 相似文献
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林敬伟 《林业机械与木工设备》2009,37(10):56-58
论述了人才甄选面试中应聘者采用管理策略的作用及其影响因素对面试官甄选人才的影响。 相似文献
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保护区游客管理模式的演进 总被引：5，自引：0，他引：5
游客管理的难题包括游客对资源的影响控制、游客不良行为控制、游客体验质量的下降以及游客服务设施的兴建等。经过30余年理论和实践经验的积累,全球保护区游客管理形成了多种模式和框架。文章初步分析了这些模式的管理目标、管理方式和决策模式等演进轨迹。 相似文献
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Socio-economic significance of reed forests in a rural community: A case study from the greater Sylhet Region of Bangladesh 总被引：1，自引：0，他引：1
Qumruzzaman Chowdhury A. Z. M. Manzoor Rashid Masuduzzaman Afrad 《Small-Scale Forestry》2004,3(1):121-130
The reed forests that are the subject of this study are scattered over five thanas of the Sunamganj and Sylhet Districts of
the Sylhet Division of Bangladesh. Their total area is 23,590 ha and they have great ecological, economic, commercial and
socio-economic importance due to the diversified resources they supply. However, the forests are commonly encroached on by
local people who are perceived to be seriously depleting the resource. This paper deals with the socio-economic status of
the people residing near these reed forests, and examines their dependency on the resources provided by the reed forests.
A socio-economic survey, participatory rural appraisal and interviews were used to obtain baseline data of the reed forest
resource and the local communities. The study reveals that the communities in the study region have higher income than other
areas of Bangladesh. Most survey respondents have other occupations in addition to farming. The literacy rate is 28.8%. Among
the illiterate, 68% engage in collecting reeds. Although the Forest Department has a management plan for sustainable use of
the reed forests, encroachers receive backing from political leaders and local elites, so their eviction is difficult. In
order to achieve long-term productivity and sustainability from the reed forests, this study recommends a strategy of developing
an integrated joint management plan between the Forest Department and the local people. 相似文献
6.
采用野外调查和室内分析的方法,研究了河南鸡公山国家级自然保护区内森林风景区土壤理化特征对不同旅游干扰强度和干扰距离的响应。结果表明,重度干扰的土壤容重(1.23 g·cm-3)显著高于轻度(1.03 g·cm-3)和中度(1.07 g·cm-3)干扰的(P<0.05),而其土壤总孔隙度(57.5%)则显著低于轻度(61.3%)和中度(59.6%)干扰的(P<0.05);中度及重度干扰下的土壤全氮含量(1.9 g·kg-1和1.8 g·kg-1)和有机碳含量(19.3 g·kg-1和21.2g·kg-1)均显著低于轻度干扰的(2.2 g·kg-1和26.8 g·kg-1)。与背景区(距干扰中心区边缘外10 m以上)相比,干扰导致缓冲区(距干扰中心区边缘外3~10 m)的土壤容重和总孔隙度变化随着干扰强度的增加而下降,而核心区(位于干扰中心区0~1 m)的土壤容重和总孔隙度的变化随干扰强度的增加而增加。以上研究结果可为森林风景区的规划和科学管理提供参考。 相似文献
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本研究发现了红蓼的异型花柱现象,红蓼野外居群存在长柱型花和短柱型花。研究表明长/短柱花型具有精确的交互式异位特征,其花大小,柱头形态,乳突大小,花粉粒数目、大小都表现出两型性(P<0.01)。与长柱型花相比,短柱型花较大,有短且排列紧密的柱头乳突细胞,花药产生较少且大的花粉。长/短柱型花花瓣长度无显著差异(P>0.01)。扫描电镜显示两型花的花粉均具有散孔,孔近似圆形,边缘形状不规则。野外调查发现蓟马、蚂蚁、食蚜蝇为主要访花者。人工授粉,红蓼长/短柱型花自交、型内异交以及型间异交花粉管均萌发,0.5 h花粉管已萌发至子房,只有部分花粉管能萌发至子房且沿花柱壁及子房壁生长,说明其受精方式为合点受精。长/短柱型花型内异交座果率分别为14.00%和13.33%,自交座果率分别为4.62%和2.86%,型间异交的座果率分别为43.33%和44.61%,表明红蓼长/短柱型花自交表现出一定的亲和性,但座果率低,仍以异交为主。 相似文献
9.
马新威 《农业图书情报学刊》2009,21(7):139-141
结合广州航海高等专科学校图书馆的馆藏情况、采访模式,提出了改进图书采访工作的策略和方法。 相似文献
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首次详细报道了蚕茧草的异型花柱现象,研究表明,除了其雄蕊、柱头高度有二型性外,其花瓣大小、柱头形态、花粉粒大小、数量和种子质量也表现出明显的二态性。与短柱花相比,长柱花有较大的花瓣,其柱头有稀而高的柱头突起,其花药产生较多而直径较小的花粉粒。扫描电镜显示,长、短柱花的种子均卵形,无喙突,具有拟脑状纹饰;长、短柱花的花粉均为球形,具散孔,孔近圆形,边缘不规则,通过其花粉和种子微形态的观察,可将其划分为春蓼组。野外调查发现蚂蚁常常是其访花者。通过对其野生居群的型比调查发现在野外蚕茧草往往为单型居群,并通过对不同居群座果率的统计发现长柱花的结实率较大。根据其繁育系统特征,对其传粉适应方式进行了探讨。 相似文献