论文总字数:14344字
目 录
0 引言 5
1 资料与方法 6
1.1 数据来源 6
1.2 研究区域概况 6
1.3研究方法 6
2 区域气候变化分析 6
2.1 研究区域气候年变化特征分析 6
2.2 研究区域气候季节变化特征分析 10
3气候对耕地生产潜力影响变化分析 11
3.1气候生产潜力模型 11
3.2气候生产潜力空间分布差异 11
3.3气候生产潜力相关性分析 13
4 结论与讨论 14
4.1 结论 14
4.2 讨论 14
参考文献 16
致谢 18
江苏沿海地区近50年气候变化对耕地气候生产潜力的影响
刘敬,俞文政
,China
Abstract: In this paper, the annual and monthly data of precipitation and air temperature at the three sites from 1964 to 2014 in the three sites of the Chongchuan District of Nantong City, the Sheyang County of Yancheng City, and the Lianyungang District of Gansu Province were selected for analysis. Climate change and influencing factors in the past 50 years; Thornthwaite Memorial model was used to study the temporal and spatial characteristics of agricultural climate productivity, and SPSS software was used to analyze the corresponding relationship between agricultural climate production potential in the study area and precipitation and temperature. The results of the study show that: In the past 50 years, the temperature in the coastal areas of Jiangsu Province has shown an upward trend, and the average temperature rising tendency rate is 0.31°C•10a-1 (Plt;0.01). Among them, the uptrend of Chongchuan District in Nantong is the most obvious, followed by Yan and Sheyang. The upward trend is relatively minimal. The regional variation of precipitation in this area is more obvious. Precipitation in Chongchuan District fluctuates, and the volatility of the spit-yang declines, while clams show a slight upward trend. The spatial and temporal evolution characteristics of climate production potential are consistent with the change trend of precipitation, and the influence of temperature and precipitation on agricultural climate production potential is significant, but the climate is "cold wet" and "warm dry" is unfavorable for crop growth with precipitation as the main influencing factor.
Key words: Jiangsu; Coastal areas; Climate change; Arable land;
0 引言
自从1881—2012年以来,全球各地的平均气温已经上升了0.85℃[1],在现阶段,地球主要气候变化特征是以转暖为主,这样显著的气候变化,它的影响我们是不可忽视的,地球上的各种生态系统以及人类的生产和生命安全都受其明显的影响[2]。我们都知道的是,气候变化对众多的生产活动影响最大的一个就是农业生产活动,很多气象方面的灾害都会由全球平均气温的升高引起,比如:高温、旱灾、山洪、雷暴、台风、沙尘暴等,这些都会对农业生产活动有着很大的不良影响。
全球气候变化是国内外学者关注的关键内容的一部分,一份由联合国政府间气候变化专门委员会(IPCC)[3]发表的气候变化发表的研究公报表明,全球变暖已成为大家所一致认同的气候现象。跟据这个部门的一些预测,全球的大气和土壤的温度将会提高1.5~4.5℃,厄尔尼诺南方涛动(ENSO)现象由相关数据显示也将会比以往活动得更加频繁,持续时间更长,强度也将会变得更大,这一系列的变化都可以归结于CO2在大气中浓度的极速升高。随着全球气温逐渐的上升,全球降水总量将有一定程度的提升,这也将会改变全球的降水格局,每10年,北半球中高纬度的降水量增加0.52%~1.07%;全球平均海平面将会在20世纪下旬平均上升0.11~0.23m,大雨频率将会提升2.01%~4.13%,在中纬度内部陆地的一些地方,夏季干旱的频率也会显著增加[4-5]。
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