Spatio-temporal dynamics of maize cropping system in Northeast China between 1980 and 2010 by using spatial production allocation model
文献类型: 外文期刊
第一作者: Tan Jieyang
作者: Tan Jieyang;Yang Peng;Wu Wenbin;Zhang Li;Li Zhipeng;Tang Huajun;Li Zhengguo;Liu Zhenhuan;You Liangzhi
作者机构:
关键词: spring maize;spatial production allocation model;spatio-temporal pattern;Northeast China
期刊名称:JOURNAL OF GEOGRAPHICAL SCIENCES ( 影响因子:3.534; 五年影响因子:3.647 )
ISSN: 1009-637X
年卷期: 2014 年 24 卷 3 期
页码:
收录情况: SCI
摘要: Understanding crop patterns and their changes on regional scale is a critical requirement for projecting agro-ecosystem dynamics. However, tools and methods for mapping the distribution of crop area and yield are still lacking. Based on the cross-entropy theory, a spatial production allocation model (SPAM) has been developed for presenting spatio-temporal dynamics of maize cropping system in Northeast China during 1980-2010. The simulated results indicated that (1) maize sown area expanded northwards to 48 degrees N before 2000, after that the increased sown area mainly occurred in the central and southern parts of Northeast China. Meanwhile, maize also expanded eastwards to 127 degrees E and lower elevation (less than 100 m) as well as higher elevation (mainly distributed between 200 m and 350 m); (2) maize yield has been greatly promoted for most planted area of Northeast China, especially in the planted zone between 42 degrees N and 48 degrees N, while the yield increase was relatively homogeneous without obvious longitudinal variations for whole region; (3) maize planting density increased gradually to a moderately high level over the investigated period, which reflected the trend of aggregation of maize cultivation driven by market demand.
分类号:
- 相关文献
作者其他论文 更多>>
-
Photosynthetic characteristics of cotton are enhanced by altering the timing of mulch updates film removal
作者:Zhang Zhanqin;Zhang Li;Tian Haiyan;Yang Xiangkun;Zhang Zhanqin;Zhang Li;Yang Xiangkun;Niu Yuan
关键词:Chlorophyll fluorescence; Gas exchange parameters; Lint yield; Removing mulch film; Soil temperature and moisture content
-
Spatio-temporal differences and factors influencing intensive cropland use in the Huang-Huai-Hai Plain
作者:Shi Shuqin;Han Yu;Yu Wentao;Cao Yuqing;Cai Weimin;Yang Peng;Wu Wenbin;Yu Qiangyi
关键词:intensive cropland use; spatio-temporal difference; influence mechanism; GeoDetector model; Huang-Huai-Hai Plain
-
Modeling the spatio-temporal changes in land uses and its impacts on ecosystem services in Northeast China over 2000-2050
作者:Xia Tian;Wu Wenbin;Zhou Qingbo;Yang Peng;Xia Tian;Tan Wenxia;Verburg, Peter H.;Ye Liming;Ye Liming
关键词:Northeast China; land use; spatio-temporal change; scenario; ecosystem service
-
Design of a spatial sampling scheme considering the spatial autocorrelation of crop acreage included in the sampling units
作者:Wang Di;Zhou Qing-bo;Yang Peng;Chen Zhong-xin
关键词:crop acreage; spatial autocorrelation; sampling unit; planting intensity; cultivated land fragmentation; ground slope
-
Spatio-temporal analysis of the geographical centroids for three major crops in China from 1949 to 2014
作者:Fan Lingling;Liang Shefang;Chen Hao;Wu Wenbin;Yang Peng;Hu Yanan;Zhang Xiaofei;Liu Zhenhuan;Wu Wenbin;Yang Peng
关键词:geographical centroid; rice; maize; wheat; China
-
Cultivated land change in the Belt and Road Initiative region
作者:Chen Di;Yu Qiangyi;Hu Qiong;Xiang Mingtao;Zhou Qingbo;Wu Wenbin
关键词:spatio-temporal change; land conversion; intensification; multi-cropping; fragmentation; GlobeLand30
-
Spatiotemporal changes of cropping structure in China during 1980-2011
作者:Liu Zhenhuan;Yang Peng;Wu Wenbin;You Liangzhi
关键词:cropping structure; cropping type; cropping proportion; China