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作物学报 ›› 2017, Vol. 43 ›› Issue (03): 378-388.doi: 10.3724/SP.J.1006.2017.00378

• 作物遗传育种·种质资源·分子遗传学 • 上一篇    下一篇

综合农业分区尺度下农作物种质资源的空间分布特征

陈彦清,曹永生,方沩*,陈丽娜   

  1. 中国农业科学院作物科学研究所，北京100081
  • 收稿日期:2016-06-01 修回日期:2016-09-18 出版日期:2017-03-12 网络出版日期:2016-10-20
  • 通讯作者: 方沩，E-mail: fangwei@caas.cn
  • 基金资助:

    本研究由国家科技基础性工作专项“贵州农业生物资源调查(2012FY110200)”和国家农作物种质资源平台项目资助。

Spatial Distribution Characteristics of National Crop Germplasm Resources Based on Spatial Statistics in Comprehensive Agricultural Regional Scale

CHEN Yan-Qing,CAO Yong-Sheng,FANG Wei*,CHEN Li-Na   

  1. Institute of Crop Science,Chinese Academy of Agricultural Sciences,Beijing 100081, China
  • Received:2016-06-01 Revised:2016-09-18 Published:2017-03-12 Published online:2016-10-20
  • Contact: 方沩，E-mail: fangwei@caas.cn
  • Supported by:

    This study is funded by the National Science and Technology Basic Work Special Project “Agricultural Biological Resources Survey of Guizhou Province” (2012FY110200) and the National Infrastructure for Crop Germplasm Resources.

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摘要：

掌握农作物种质资源的空间分布特征，分析种质资源在地理空间上的聚集离散特征，对于作物种质资源全面收集、有效保护和高效利用具有重要意义。本研究基于空间统计学原理和方法，借助ARCGIS软件，从种质资源的数量、方位特征、集中程度分别分析不同综合农业分区内种质资源的空间分布特征。通过数量分析显示，黄淮海区和黄土高原区密度最大，说明这两个地区的种质资源最为丰富，需要重点保护；方位分析得出，华南区和甘新区的资源分布范围最广，并且资源方向分布趋势最为明显，除甘新区外，其他区域的资源方向角均在90°以内。资源的分布范围、分布趋势和方向角度不仅能分析区域资源的方位分布特征，还可从空间角度辅助寻找影响种质资源地理分布的关键因子；集中度分析中，青藏区、内蒙古及长城沿线区和东北区的种质资源分布最为聚集，可采取集中区域资源重点保护的策略。该项研究可为种质资源在不同综合农业分区内的保护、利用和收集提供理论依据。

关键词: 作物种质资源, 空间统计学, 空间分布特征, 综合农业分区

Abstract:

It is important to analyze and understandthespatial distribution features and models for the comprehensive collection, effective protection and efficient utilization of crop germplasm resources. The spatial distribution features of crop germplasm resources were analyzed in quantity, density and orientative featuresin comprehensive agricultural regional scaleby using the spatial statistical principles and methods and ArcGIS software. In conclusion, thecropgermplasm densities of The Yellow Huaihe-Haihe Rivers regionand loess plateau region are the largestshowing abundant crop germplasm resources in these two regions, which should be protectedas a key point. The crop germplasm resources of the southern region of China and Gansu-Xinjiang region are the most widely distributed, and the distribution trend in these two areas is alsothe most obvious. The orientation angles of all districts except for the Gansu-Xinjiang region are within 90°.The distribution, distribution trend and the orientationangle not only can be used to analyze orientative distribution characteristics of regional resources, but also can help us to find the key factors affecting germplasm resource geographic distribution from spatial perspective. In concentration characteristics, the germplasm resources in Qinghai Tibet region, Inner Mongolia and the area along the Great Wall region and North-east region of China are the most centralized in distribution. We can take some measures to protect germplasm resources in these areas. This study reveals the difference in density and orientation characteristics of germplasm resources distribution andprovides sometheoretical basesin protection, utilization and collection of germplasm resources in different comprehensive agricultural regions.

Key words: Crop germplasm resources, Spatial statistics, Spatial distribution characteristics, Comprehensive agricultural regions

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