›› 2014, Vol. 24 ›› Issue (3): 397-410.doi: 10.1007/s11442-014-1096-0

• Research Articles • Previous Articles     Next Articles

Spatio-temporal dynamics of maize cropping system in Northeast China between 1980 and 2010 by using spatial production allocation model

TAN Jieyang1, YANG Peng1, LIU Zhenhuan2, WU Wenbin1, ZHANG Li1, LI Zhipeng1, YOU Liangzhi3, TANG Huajun1, LI Zhengguo1   

  1. 1. Key Laboratory of Agri-informatics, Ministry of Agriculture/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
    2. Geography and Planning School of Sun Yat-sen University, Guangzhou 510275, China;
    3. Environment and Production Technology Division, International Food Policy Research Institute, 2033K Street, NW, Washington, DC 20006, USA
  • Received:2013-12-16 Revised:2014-01-06 Online:2014-06-15 Published:2014-03-28
  • Contact: Li Zhengguo (1980-), PhD and Associate Professor, specialized in remote sensing, climate change and food security. E-mail: lizhengguo@caas.cn E-mail:lizhengguo@caas.cn
  • About author:Tan Jieyang (1991-), Master Student, specialized in impact of climate change on agriculture. E-mail: tanjieyang@caas.cn
  • Supported by:

    National Natural Science Foundation of China, No.41171328, No.41201184, No.41101537; National Basic Program of China, No.2010CB951502

Abstract:

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°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°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°N and 48°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.

Key words: spring maize, spatial production allocation model, spatio-temporal pattern, Northeast China