南岭山地地域分界性的地理探测

doi:10.13284/j.cnki.rddl.003049

摘要/Abstract

摘要： 利用地理探测器模型，选取气温、降水、植被及土壤类型指标，从空间分层异质性的角度对南岭山地的地域分界性进行定量探测识别。结果表明：1）南岭山地具有显著的地域分界性，q值最高达到0.99，岭南与岭北2个子区域的层内方差之和（SSW）远小于全区总方差（SST），南岭山地两侧区域空间分异性显著。2）南岭山地地域分界性具体主要体现在气温方面，其中最冷月均温、最低多年平均日最低温、日均温≥10℃积温、日均温≥10℃天数、年均温5项指标对南岭山地地域分界性贡献度最大；植被类型、土壤类型及降水指标对南岭山地地域分界性的贡献度不及气温指标，且贡献度依次减小。3）南岭山地地域分界性具有明显的季节差异，在气温方面于春、秋、冬季显著，而夏季明显减弱；在降水方面季节波动明显，且于夏、秋2季显著，并在11月达到峰值。

关键词: 南岭山地, 地域分界性, 地理探测器, 空间分异性

Abstract: The Nanling is the largest mountain system in the southern part of China, there is a certain dispute over whether it has a distinct regional demarcation effect, in that case the Geodetector, a new spatial analysis model to reveal the driving force behind it and can measure spatial diversity, can be used by choosing temperature, precipitation, vegetation type and soil type indicators to quantitatively identify the territorial boundaries of the Nanling mountains from the perspective of spatial heterogeneity, in order to get the contribution degree of different zoning indexes to the boundary of the Nanling Mountain area, and the geographical significance of the Nanling mountains can be more objectively and accurately understood. The results showed: 1) the Nanling mountain area has obvious regional demarcation, the highest q value reaches 0.99, the Within Sum of Squares (SSW) of the south of the mountains and the north of the mountains is far less than the Total Sum of Squares (SST), the spatial stratified heterogeneit of the two sides of the Nanling mountain region is significant. 2) Nanling regional difference is mainly reflected in the specific temperature, there are 5 indexes having the greatest contribution to the regional boundary of the Nanling Mountains, which are the average temperature of the coldest month, the annual mean minimum temperature, ≥10℃ accumulated temperature, the number of days when daily mean temperature ≥10℃ and the annual average temperature; The contribution of vegetation type, soil type and precipitation index to the regional demarcation of the Nanling mountain area is less than that of the temperature index, and their contribution degree decreased in turn. 3) The regional demarcation of the Nanling mountains has obvious seasonal difference. It is notable in spring, autumn and winter, but decreases in summer. In terms of precipitation, seasonal fluctuation is obvious, and it is significant in summer and autumn, and reaches its peak in November. The research results would have certain guiding significance for the areas south of the Nanling and north of the Nanling to carry out agricultural production and daily life in local conditions. At the same time, it also would provide a new way of thinking for the study of the boundary of other mountainous regions.

Key words: the Nanling Mountains, regional demarcation, Geodetector, spatial stratified heterogeneit

王钰莹，董玉祥. 南岭山地地域分界性的地理探测[J]. 热带地理, 2018, 38(3): 337-346.

WANG Yuying and DONG Yuxiang. Geographical Detection of Regional Demarcation in the Nanling Mountains[J]. TROPICAL GEOGRAPHY, 2018, 38(3): 337-346.

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