自然资源学报 ›› 2006, Vol. 21 ›› Issue (2): 204-209.doi: 10.11849/zrzyxb.2006.02.006

• 资源利用与管理 • 上一篇    下一篇

北方农牧交错带农业气候资源空间特征分析

陈海1,2, 康慕谊2, 曹明明1   

  1. 1. 北京师范大学资源学院中国生态资产评估研究中心,北京100875;
    2. 西北大学城市与资源学系,西安710069
  • 收稿日期:2005-09-23 修回日期:2005-10-15 出版日期:2006-04-25 发布日期:2006-04-25
  • 作者简介:陈海(1971),男,山西太原人,博士,讲师,主要从事自然地理学、生态学方面的研究。
  • 基金资助:

    国家重点基础研究发展规划(973,G2000018607);重大基础研究前期研究专项(2003CCC01500);陕西省教育厅专项基金(05JK290)

Analysis on the Climatic Resources of the Farming,pastoral Zone in Northern China Based on RS and GIS

CHEN Hai1,2, KANG Muyi2, CAO Mingming1   

  1. 1. Department of Urban and Resource Sciences,Northwest University,Xi'an 710069,China;
    2. College of Resources Science and Technology,China Ecological Capital Assessment and Research Center,Beijing Normal University,Beijing 100875,China
  • Received:2005-09-23 Revised:2005-10-15 Online:2006-04-25 Published:2006-04-25

摘要: 运用GIS与RS技术,选择日平均温度、生育期日平均温度、生育期积温、生育期降水、全年降水和生育期日照时数等指数,依据主要作物适宜条件构建模糊隶属函数,利用主成分分析法定量评判研究区农业气候资源适宜度。在此基础上,进一步指出农业气候资源各单项指数及综合指数的空间分异规律。结果表明:①相对热量和光照而言,水分是研究区农牧林业生产的主要限制因子,水分指数的分布大体呈现东北-西南走向;②研究区总气候资源指数和资源效能指数的计算表明,农业气候资源潜力小,光、热、水的配合效果差;两指数由东南向西北的分布次序均为由好到差;③研究区气候资源利用效率计算表明:大多数作物对农业气候资源利用的实际效率低。该指数由东南向西北的分布次序为较高、一般、较低和低4种类型。

关键词: 北方农牧交错带, 农业气候资源, 空间分异

Abstract: Through using the tools of RS and GIS,the spatial distribution pattern of the climatic resources for agricultural production in the Farming,pastoral Zone in Northern China was analyzed in this paper.Six indices related to the features of the climates resources,including the annual mean daily temperature,mean daily temperature of growing season,cumulated temperature of growing season,precipitation of growing season,annual precipitation,and the sunshine hours,were selected for analyzing the thermal and moisture characteristics of the Zone.Those climatic data were processed by constructing the fuzzy membership function,single and integrated climatic resources,the efficiency index and the utilization coefficient of the climatic resources,and the resources suitability for agricultural production were appraised quantitatively by using the PCA method.The single indices include precipitation index,illumination index and thermal index.Through calculating the single indices,the key,limiting factor is identified.The integrated indices can indicate the interaction of the single indices and the efficient climatic resources and the climatic resources potential of the crops used in the study area.Based on the analysis,the spatial distribution pattern of the indices was further revealed through RS and GIS tools.The preliminary results are as follows:(1)Precipitation is the key limiting factor in the study area,and thus the spatial distribution of the moisture condition orientates towards,humid,moderately humid,moderately dry to dry,from southeast through northwest.(2)The spatial orientation of the climatic resources and the efficiency of the climatic resources are also from southeast to northwest,ranking from good to worse.(3)The utilization coefficient of the climatic resources is not so high,and its spatial distribution pattern shows a gradation of,from southeast to northwest,higher,high,low and lower.Those patterns of spatial distribution are more or less obvious in the middle part of the study area.

Key words: the farming,pastoral zone in Northern China, agro,climatic resources, spatial distri,bution pattern