共查询到17条相似文献,搜索用时 72 毫秒
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《现代农业科技》2016,(24)
在全球气候变暖的背景下,莱芜市的光热资源发生了明显的变化,低温、寡照等灾害对设施农业发展的影响更加显著。利用莱芜市35年(1981—2015年)的观测资料,对冬季影响设施农业生产的光、温气候资源的变化特点进行了分析评估,同时利用近10年区域站资料,对同期气候资源以及气象灾害的空间分布特征进行了初步探讨。结果表明,莱芜市冬季气温在波动中上升,低温日数减少,对设施农业生产有利,但日照时数减少,低温、寡照等对茄果类设施蔬菜的影响更加剧,应做好极端低温和寡照灾害的应对措施。在空间分布上,莱芜市冬季气温呈现从西南部平原到东北部山区递减的趋势,低温灾害、风灾等灾害东北部山区多,影响程度重;西南部平原灾害少,影响程度低。设施农业生产的发展远景,西南部平原区优于东北部山区,东北部山区适宜发展叶菜类蔬菜,西南部平原适宜发展瓜果类蔬菜,新建温室大棚应选择保温性能好的土墙结构。 相似文献
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利用1982~2014年宿州市逐日气温、降水量资料,采用趋势分析法和M-K突变检验法对近33 a来宿州气温和降水的变化趋势及其对农业的影响进行了分析,并研究了气候变化对农业生产的应对途经。结果表明,1982年以来宿州市气温上升明显,但年降水量变化不大,年降水分布极为不均衡,大部分降水集中在雨季。气候变化给宿州农业带来了较大影响,主要表现在农作物生长的脆弱性和气候变化造成的极端天气导致农业气象灾害加剧,同时气候变化通过对土壤、水分和病虫害的影响间接影响宿州农业的发展,使农业生产面临的风险和损失增大。应该顺应变化,培育优良品种,积极调整农业种植格局;加强农业气候灾害防控,提升农业基础设施建设。 相似文献
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[目的]研究设施农业发展对潍坊气候变化的影响。[方法]选取寿光站作为温室大棚种植区的代表站,利用潍坊市1961~2010年的降水、气温、相对湿度等资料,分析了全市及温室大棚种植区的气候变化情况,并对比分析设施农业种植以前和以后的气候变化趋势及不同季节的演变特征。[结果]近50年全市年降水量呈下降趋势,相对湿度呈下降趋势,年平均气温、年最高气温、年最低气温均呈上升趋势;自温室大棚大规模种植以来,温室大棚种植区年降水量下降幅度低于全市,相对湿度下降幅度明显高于全市,年平均气温升幅高于全市,年最高气温升幅高于全市,年最低气温升幅略高于全市。[结论]该研究为设施农业发展提供理论依据。 相似文献
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近50年建昌县霜期设施农业生产中光热气候资源变化特征 总被引:1,自引:0,他引:1
[目的]研究近50年建昌县霜期设施农业生产中光热气候资源变化特征。[方法]利用近50年建昌县气候资料,采用常规数理统计方法,分析了1960~2009年建昌县霜期光照、气温变化趋势。[结果]1960~2009年建昌县霜期日照时数、日照百分率呈减少趋势,气候倾向率分别为-55.556 h/10 a、-2.39%/10 a,近50年分别减少了278 h和12%;1981、1982年发生了气候跃变,跃变前后日照时数、日照百分率分别减少161 h和7%。霜期气温总体呈升高趋势,平均气温、平均最高、最低气温气候倾向率分别为0.386、0.392和0.567℃/10 a,近50年分别上升了1.93、1.96和2.84℃;1987、1988年发生气温跃变,跃变前后霜期平均气温、平均最高、最低气温分别升高了1.3、1.2和1.7℃。近50年来,建昌霜期光照资源减少,而热量资源增加,形成光热互补。[结论]该研究为当地霜期设施农业的发展提供了气候依据。 相似文献
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在我国科学技术水平的飞速提升下,农业现代化程度越来越高,设施农业应运而生且同样获得了极大发展。本文将通过结合相关研究资料,从阐明设施农业与农业现代化的基本内涵入手,分别从惠农政策、农业技术装备与农民经济收益三个方面着眼,重点围绕设施农业对农业现代化的影响作用进行简要分析研究。 相似文献
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Robert Mendelsohn 《农业科学学报》2014,13(4):660-665
Asian agriculture is responsible for two thirds of global agricultural GDP. There have been numerous studies exploring the impact of climate change on crops in specific locations in Asia but no study has yet analyzed crops across the entire continent. This study relies on a Ricardian study of China that estimated climate coefficients for Chinese crops. These coefficients are then used to interpolate potential climate damages across the continent. With carbon fertilization, the model predicts small aggregate effects with a 1.5℃ warming but damages of about USS84 billion with 3℃ warming. India is predicted to be especially vulnerable. 相似文献
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气候变化对中国农业的影响 总被引:5,自引:1,他引:5
从种植制度、作物生产潜力、作物产量、气象灾害以及病虫害等方面阐述了气候变化对中国农业的影响.分析了应对气候变化的对策,并对未来研究作出展望。 相似文献
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Agriculture is facing great challenge in meeting global food security and is expected to face even greater challenge under climate change. The overall goal of this paper is to examine how finance can be used to achieve the joint objectives of development, mitigation of and adaptation to climate change in agriculture in developing world based on literature review. The results show that agriculture is much under invested and foreign aid also has not increased appropriately to assist developing countries to maintain sustainable agriculture under climate change. There are a wide range of areas in mitigation of and adaptation to climate change that need substantial investment. Major areas and successful cases mitigation of and adaptation to climate change in agriculture that have worked in developing countries are examined. A list of areas that have worked, could work and be scaled up or transferred is identified and discussed. This study concludes that mainstreaming agricultural mitigation and adaptation into agricultural development programs, enhancing local capacity, and considering different stakeholders' needs are major experiences for successfully financing sustainable agriculture under climate change. 相似文献
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CHEN Zhuochun 《东北农业大学学报(英文版)》2009,16(4):70-77
Mitigation and adaptation are two principle strategies for managing human-induced climate change. Agriculture plays a duet role in climate change. It has been a major source of greenhouse gases to the atmosphere. It is also one of the sectors most vulnerable to the risks and impacts of global climate change. This paper first indentified the mitigative and adaptative options and potential in agriculture, then addressed the integrated analysis of mitigation and adaptation and its benefits for agriculture. Finally, it discussed the implications to Chinese agriculture in dealing with the global climate change. 相似文献
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我国农业的气候脆弱性研究及其评价 总被引:3,自引:0,他引:3
未来100年气候变暖的速度将会逐渐加快,势必会引起农业生态环境、生产布局和结构的变化,进而影响国家的粮食生产及粮食安全,因此开展气候变化背景下农业的气候脆弱性研究是气候变化脆弱性研究的重要课题和内容.在阐明农业气候脆弱性概念的基础上,综述了近年来国内外气候变化对农业的影响及其脆弱性研究评价的现状、方法,归纳和介绍了脆弱性研究和评价的4种主要方法,即统计分析法、指标体系法、模型模拟法和综合评估法,从研究方法、研究内容、研究工具、研究对象和研究过程等5方面进行了展望,指出了该领域研究的不足以及今后的发展方向. 相似文献
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China is the world’s most populous country and a major emitter of greenhouse gases. Consequently, China’s role in climate change has received a great deal of attention, whereas the impact of climate change on China has been largely ignored. Studies on the impacts of climate change on agriculture and adaptation strategies are increasingly becoming major areas of scientific concern. However, the clear warming that has been sounded in China in recent decades has not been matched with a clear assessment of the impact of climate change on China’s water resources and agriculture. In the present study, we review observations on climate change, hydrology, and agriculture in China and relate these observations to likely future changes. We also analyse the adaptive strategies in China’s agriculture. 相似文献