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贵州21个资源调查县的种质资源地理空间分布特征
陈彦清, 曹永生, 井福荣, 刘海洋, 方沩
0
(中国农业科学院作物科学研究所)
摘要:
为了摸清贵州农业生物资源调查所收集资源的地理分布特征,利用空间统计分析、多样性分析等方法对所收集资 源的外在地理环境和内在空间表现进行研究和分析。首先,通过空间叠加和统计确定调查资源所处的海拔、温度、降水等基 本地理环境特点;其次,利用优化热点分析、地理分布中心、空间多样性分析等方法分析调查资源在空间上的聚散分布、不 同调查专题地理分布的方位和差异性、资源的分布密度、丰富程度等特征。结果显示,调查资源所处地区的海拔、气象因素 的区间跨度较大,但大部分资源处在相对集中的地理环境区间内分布,68.7%的资源分布在海拔 600~1400m 之间,65.1%的资 源分布在年均温 15~17℃之间,61.7%的资源分布在年降水 1250~1350mm 之间;本次收集的资源在省域范围呈现随机分布模 式,没有明显的聚集区和离散区域,所选的 21 个调查县从地理空间的角度上能够基本反映贵州农业生物资源的空间分布特 点;不同专题的作物交叉分布,除食用菌集中分布在西南方向外,粮食、经济、蔬菜、果树、药用植物 5 个专题的资源在省 内的分布相对均匀;资源提供者的民族多样,总数多达 14 个,其中苗族提供资源份数最多,占总数的 37%,其次为汉族和 布依族,分别为 16%和 15%,黎族、回族提供者提供的资源比例则不到总数的 1%。通过本研究,基本掌握了贵州农业生物资 源的分布现状和特征,为贵州省生物资源有效保护和高效利用相关政策的制定提供参考。
关键词:  贵州  种质资源  地理环境  空间分布
DOI:10.13430/j.cnki.jpgr.20190902003
投稿时间:2019-09-02修订日期:2019-10-18
基金项目:国家科技基础性工作专项(2012FY110200)
Geographical Distribution Characteristics of Crop Germplasm Resources of 21 investigation counties in Guizhou Province
CHEN Yan-qing, CAO Yong-sheng, JING Fu-rong, LIU Hai-yang, FANG Wei
(Institute of Crop Science, Chinese Academy of Agricultural Sciences)
Abstract:
In order to find out the geographical distribution characteristics of the collected agricultural biological germplasm resources in Guizhou, the external geographical environment and the internal spatial performance of the collected resources were analyzed with the methods of spatial statistical analysis and diversity analysis. Firstly, the characteristics of elevation, temperature, precipitation and other basic geographic environment of germplasm resources are determined by spatial superposition and statistics. Secondly, the spatial distribution, the orientation and difference as well as heterosexuality, density and richness of germplasm resources are analyzed using the optimizing hotspot analysis, the geographic distribution center analysis and spatial diversity analysis.. The results show that the interval of elevation and meteorological factors in the area where the resources are located is large, but most of them are distributed in relatively concentrated geographical environment. 68.7% of the germplasm resources were found to be distributed between 600 and 1400 m of altitude, 65.1% were distributed between 15 and 17 degrees centigrade of average annual temperature, and 61.7% were distributed from 1250 to 1350 mm of annual precipitation. In addition, the 21 selected counties can basically reflect the spatial distribution characteristics of agricultural biological resources in Guizhou from the perspective of geographic space. Germplasm resources of different topics are cross-distributed, with the exception of edible fungi concentrated in the southwest. The resources of food crops, economical crops, vegetables, fruit trees and medicinal plants, which were provided by 14 ethnic group, are relatively evenly distributed in the province. Among them, the Miao ethnic group provided the highest amount (37%) of resources, followed by the Han (16%) and Buyi (15%) ethnic groups. The proportion of resources provided is less than 1% of the total. Thus, this study described the distribution status and characteristics of agricultural biological resources in Guizhou Province, which will provide reference for the formulation of relevant policies for effective protection and efficient utilization of biological resources in Guizhou Province.
Key words:  Guizhou  germplasm resources  geographical environment  the space distribution

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