• EI
    • CSA
    • CABI
    • 卓越期刊
    • CA
    • Scopus
    • CSCD
    • 核心期刊
Geng Yanhui, Min Qingwen, Cheng Shengkui, Chen Caocao. Temporal and spatial distribution of cropland-population-grain system and pressure index on cropland in Jinghe watershed[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2008, 24(10): 68-73.
Citation: Geng Yanhui, Min Qingwen, Cheng Shengkui, Chen Caocao. Temporal and spatial distribution of cropland-population-grain system and pressure index on cropland in Jinghe watershed[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2008, 24(10): 68-73.

Temporal and spatial distribution of cropland-population-grain system and pressure index on cropland in Jinghe watershed

More Information
  • Received Date: October 09, 2007
  • Revised Date: June 29, 2008
  • Published Date: October 30, 2008
  • Pressure index on cropland is one of the exponents to express the situation of land bearing capacity. The capacity shows different characters within different dimensions. Changes of cropland, population and grain were analyzed in Jinghe watershed. Basing on that, characteristics of the changes of the index in the whole area and that of in 31 counties were analyzed, such as the changes of pressure index on cropland, regional difference and the causes of such that. Results show that: ①On the whole, the area of cropland in Jinghe watershed takes on sustaining decreased trend and the population takes on sustaining increased. But these don't affect the total output greatly. On the contrary, cropland acreage per capita takes on sustaining increased trend because of the increase of grain yield per hectare. What should note is that the change of grain yield per hectare is great due to the disaster of drought. ②Minimum cropland acreage per capita in this watershed shows the trend of sustaining decreased. Hereinto, the values of pressure index on cropland reaches near to 1 in 1990, and larger than 1 in 1995 and 1999 because of drought and cropland repossession program respectively, namely, the pressure on cropland increase. In 2005, the index decreased to 0.973. ③Annual variation and regional distribution of pressure index on cropland is large. For example, in 2005, the number of counties with the values of index exceed of 1 decreased from 21 to 12. The counties bearing larger pressure on cropland distributed mainly in loess hilly region and Liupan Mountain, i.e. the area of west-north of Jinghe watershed area. On the contrary, loess hilly region of middle and lower reaches of Jinghe, alluvial plains regions distribute the units with lower pressure on cropland. ④Multiple cropping index, population density, the proportion of foodstuff, grain yield per unit area act on the pressure index on cropland, but the force is different for different factors in different area. Based on such analysis above, referring to the development of Jinghe watershed area, it is rational to collocating water and land resources within appropriate dimension adopting systematic method, following some policy and measure, such as reinforce the protection of basic farmland, increase the level of agricultural science and technology. At the same time, Jinghe watershed area should develop ecological agriculture, decrease of quantity of pesticide and chemical fertilizer, control the sustaining increase of population and then improve the quality with great efforts.
  • Related Articles

    [1]Wei Yuanyuan, Wang Xue, Wang Rujing, Gui Yuanmiao. Design and implementation of agricultural production management information system based on WebGIS[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2018, 34(16): 139-147. DOI: 10.11975/j.issn.1002-6819.2018.16.018
    [2]Ma Wenwen, Shi Jianchu, Jin Xinxin, Ning Songrui, Li Sen, Tao Yueyue, Zhang Ya'nan, Liu Yang, Lin Shan, Hu Pengcheng, Zuo Qiang. Rice growth simulation under film mulching in dryland through improving CERES-Rice model[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2017, 33(6): 115-123. DOI: 10.11975/j.issn.1002-6819.2017.06.015
    [3]Ma Wenwen, Jin Xinxin, Shi Jianchu, Ning Songrui, Li Sen, Tao Yueyue, Zhang Ya'nan, Zuo Qiang. Modeling increasing effect of soil temperature through plastic film mulch in ground cover rice production system using CERES-Rice[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2015, 31(9): 215-222. DOI: 10.11975/j.issn.1002-6819.2015.09.033
    [4]Yang Xinting, Qian Jianping, Sun Chuanheng, Zhao Chunjiang, Wang Junying, Tai Shehong, Hou Yanlin. Design and application of safe production and quality traceability system for vegetable[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2008, 24(3): 162-166.
    [5]Zhao Peng, Liu Gang, Li Minzan, Li Daoliang. Management information system for apple diseases and insect pests based on GIS[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2006, 22(12): 150-154.
    [6]Zhou Zhiyan, Luo Xiwen. Dimensional modeling of crop production management information data warehouse[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2005, 21(11): 112-115.
    [7]Zhou Zhiguo, Cao Weixing, Zhu Yan, Wang Shaohua, Pan Jie, Wang Qimeng. GIS-based information system for crop production management[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2005, 21(1): 114-118.
    [8]Jiao Xianfeng, Xu Gang, Wang Fei, Peng Shiqi. Rainfed and Water-Saving Farming Management Information System in China[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2000, 16(5): 48-51.
    [9]Chen Liancheng, Wang Erwei, Chen Lianyue, Shang Hangqiu, Qian Lixiong. Development of Management Information System for Production in Vegetable Factory[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2000, 16(2): 135-137.
    [10]Cui Guilin, Yu Youtai. DESIGNING A SOYBEAN PRODUCTION MANAGEMENT DECISION SUPPORT SYSTEM (SPM DSS) FOR HEILONGJIANG PROVINCE, P.R.C.[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 1989, 5(1): 8-12.

Catalog

    Article views (1545) PDF downloads (1052) Cited by()
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return