%A CHEN Yan-Qing,CAO Yong-Sheng,FANG Wei*,CHEN Li-Na %T Spatial Distribution Characteristics of National Crop Germplasm Resources Based on Spatial Statistics in Comprehensive Agricultural Regional Scale %0 Journal Article %D 2017 %J Acta Agronomica Sinica %R 10.3724/SP.J.1006.2017.00378 %P 378-388 %V 43 %N 03 %U {https://zwxb.chinacrops.org/CN/abstract/article_6253.shtml} %8 2017-03-12 %X

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.