欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
自从 1980 年代，显著地在中国增加温度在全球气候变化的背景下面成为了一致，气候变化怎么影响农业或平收割系统，从中国管理和科学家吸引了越来越多的注意。在这研究，在收割系统，冬季小麦的北限制和两倍米饭的国家北限制上温暖的气候的可能的效果，和在从 1981 ～ 2007 的中国的 rainfed 冬季小麦夏天玉米旋转的稳定收益的北限制被分析。另外，庄稼产量的可能的变化由在时期 1950s1981 期间种限制排水量引起了， 19812007 被比较并且讨论。农业气候的索引的公认的计算方法被采用。根据为收割系统，收割系统的国家北限制，冬季小麦和两倍米饭的气候的区域化的索引，并且 rainfed 冬季小麦夏天玉米旋转的稳定收益的北限制在二个时期期间，包括 1950s1980 并且 19812007，与 ArcGIS 被拉软件。与状况相比在 1950s1980 期间，两倍收割系统的北限制在 Shaanxi，山西， Hebei，和辽宁省和北京自治市在 19812007 期间显示出重要空间排水量，中国。收割系统的三元组的北限制在湖南，湖北，安徽，江苏，和浙江省显示出最大的空间排水量，中国。没有认为变化变化和聚会是经济因素，如果单个收割系统被两倍收割系统代替，如果两倍收割系统被收割系统的三元组代替，主要种的模式的 per 单位区域谷物收益将增加大约 54106% ，它结果是 2758% 。在辽宁， Hebei，山西， Shaanxi， Gansu，和 Qinghai 省，内部蒙古和 Ningxia 自治区域，中国，冬季小麦的北限制向北方在 19812007 期间移动了并且在不同的度向西膨胀了，与那些相比在 1950s1980 期间。如果春天小麦被冬季小麦代替，作为一个例子，小麦向北方移动了的冬季的北限制，和统一区域谷物产量的 per 拿 Hebei 省将平均在变化区域增加大约 25% 。在浙江，安徽，湖北，和湖南省，中国，种向北方移动的两倍?
英文摘要：
Significantly increasing temperature since the 1980s in China has become a consensus under the background of global climate change and how climate change affects agriculture or even cropping systems has attracted more and more attention from Chinese government and scientists. In this study, the possible effects of climate warming on the national northern limits of cropping systems, the northern limits of winter wheat and double rice, and the stable-yield northern limits of rainfed winter wheat-summer maize rotation in China from 1981 to 2007 were analyzed. Also, the possible change of crop yield caused by planting limits displacement during the periods 1950s-1981 and 1981-2007 was compared and discussed. The recognized calculation methods of agricultural climatic indices were employed. According to the indices of climatic regionalization for cropping systems, the national northern limits of cropping systems, winter wheat and double rice, and the stable-yield northern limits of rainfed winter wheat-summer maize rotation during two periods, including the 1950s-1980 and 1981-2007, were drawn with ArcGIS software. Compared with the situation during the 1950s- 1980, the northern limits of double cropping system during 1981-2007 showed significant spatial displacement in Shaanxi, Shanxi, Hebei, and Liaoning provinces and Beijing municipality, China. The northern limits of triple cropping system showed the maximum spatial displacement in Hunan, Hubei, Anhui, Jiangsu, and Zhejiang provinces, China. Without considering variety change and social economic factors, the per unit area grain yield of main planting patterns would increase about 54-106% if single cropping system was replaced by double cropping system, which turned out to be 27- 58% if double cropping system was replaced by triple cropping system. In Liaoning, Hebei, Shanxi, Shaanxi, Gansu, and Qinghai provinces, Inner Mongolia and Ningxia autonomous regions, China, the northern limits of winter wheat during 1981-2007 moved northward and expanded westward in diffe
同期刊论文项目
同项目期刊论文
期刊信息
位置：