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气象要素在农业旱灾恢复过程中的作用分析——以水田农业区(湖南鼎城)旱灾为例
  • ISSN号:0476-0301
  • 期刊名称:《北京师范大学学报:自然科学版》
  • 时间:0
  • 分类:S423[农业科学—植物保护] P457[天文地球—大气科学及气象学]
  • 作者机构:[1]北京师范大学地理学与遥感科学学院,北京100875, [2]北京师范大学区域地理研究实验室,北京100875
  • 相关基金:国家自然科学基金资助项目(40671003);国家杰出青年科学基金资助项目(40425008)
中文摘要:

以水田农业典型区湖南鼎城为例,发现在水稻生长期气象条件相近的1985和2001年,水稻单产前高后低.对建立的各旬气象要素变化与抵抗力、恢复力的关系矩阵分析结果表明,灾后降雨对水稻抵抗干旱威胁,恢复正常生理机能至关重要,可以有效地降低因灾损失.在此基础上,初步提出通过采取修建水库(中小型为主)、电力灌溉、打井提水等工程措施保证灾中-灾后及时补充水源,通过发展丘岗山地区线条形蓄水库,增加植被盖度来降低蒸发等措施改善区域气象条件的不足,提高旱灾恢复性.可为从自然和社会经济层面综合评价灾害恢复性提供案例支撑.

英文摘要:

Interactions of the lack or uneven precipitation with agricultural productive-living system lead to agricultural drought disaster. Timely water supplementations can effectively alleviate drought and reduce losses. Resilience is defined as the capacity of a system to endure disturbances without changing to a different system. System resilience can take two forms. A system may resist change (resistance), or a system changes but rapidly recoveres (recovery). Little attention has been paid to relationship between disturbance change and resilience. Based on the study in Dingcheng, Hunan province, it was found that the precipitation and evaporation in 1985 and 2001 were similar, but grain yield losses per unit area were different, with the latter being higher. With a matrix involving meteorological factors (such as precipitation, evaporation) and change/ resilience (resistance/recovery), it was possible to analyze the relationship between met factors and system resilience. Data showed that precipitation after a drought plays an important role in resisting drought and facilitating recovere to normal physiological function of the paddy field. It is then suggested that the following measures be taken to strengthen the system resilience and to improve regional weather conditions: a) constructions of reservoirs, power irrigation, water wells and other engineering measures to improve water supply; b) development of line-shaped water reservoirs, high vegetation density in hilly area to reduce evaporation. This paper provides a good example for comprehensive evaluation of disaster resilience from the physical and socio-economic aspects.

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期刊信息
  • 《北京师范大学学报:自然科学版》
  • 中国科技核心期刊
  • 主管单位:中华人民共和国教育部
  • 主办单位:北京师范大学
  • 主编:刘文彪
  • 地址:北京新外大街19号
  • 邮编:100875
  • 邮箱:JBNUNS@bnu.EDU.CN
  • 电话:
  • 国际标准刊号:ISSN:0476-0301
  • 国内统一刊号:ISSN:11-1991/N
  • 邮发代号:82-406
  • 获奖情况:
  • 1997年全国第二届科技期刊评比一等奖,1999年教育部优秀科技期刊二等奖,1999年首届国家期刊奖,中国期刊方阵“双高”期刊
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,美国化学文摘(网络版),美国数学评论(网络版),德国数学文摘,英国科学文摘数据库,英国动物学记录,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊(2004版),中国北大核心期刊(2008版),中国北大核心期刊(2011版),中国北大核心期刊(2014版),中国北大核心期刊(2000版)
  • 被引量:10672