| 引用本文: | 何钊全,尚雪,张铜会.基于GIS耦合地理探测器模型的陕北红枣生态适宜性区划与驱动机理分析[J].灌溉排水学报,2022,(12):-. |
| HE Zhaoquan,SHANG Xue,ZHANG Tonghui.基于GIS耦合地理探测器模型的陕北红枣生态适宜性区划与驱动机理分析[J].灌溉排水学报,2022,(12):-. |
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| 摘要: |
| 【目的】明晰陕北红枣生态适宜性区划特征及其对环境因子的响应过程。【方法】本文利用GIS技术进行红枣生态适宜性区划分析，并通过地理探测器模型确定环境因子驱动机理。【结果】（1）红枣生态适宜性区划等级自陕北东部和南部向西北部由高到低递减。最优适宜区和次适宜区集中分布在富县；一般适宜区主要分布在陕北沿黄河西岸诸区县，种植面积较大。（2）气候因子和地形因子对红枣生态适宜性影响较大，呈现出相互增强或非线性增强的交互作用效应，且差异显著。（3）年降雨量、高程和年积温（≥10℃）为主要驱动因子。红枣生态适宜性指数与年降雨量和年积温存在极显著负相相关性，与高程存在极显著的正相关关系。（4）年降雨量、高程及年积温能够依次解释红枣生态适宜性指数的22%、15%、11%，综合解释率达78%。【结论】陕北地区的红枣生态适宜性区划等级自东南部向西北部显著降低，主要通过年降雨量、高程、年积温及其交互作用的影响，实现区域红枣特色产业发展和林木主导型生态系统格局的调控。 |
| 关键词: GIS技术;生态适宜性;地理探测器;驱动机理;陕北红枣 |
| DOI： |
| 分类号:S565 |
| 基金项目: |
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| Ecological suitability regionalization and driving mechanism of jujube based on GIS coupled geographical detector model in Northern Shaanxi |
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HE Zhaoquan1,2,3,2,4, SHANG Xue5,2,3,2,4, ZHANG Tonghui6
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1.Shaanxi key laboratory of Chinese Jujube,Yan'2.'3.an University,Yan'4.an;5.School of Life Sciences,Yan'6.Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences
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| Abstract: |
| 【Objective】Jujube is the dominant economic tree in northern Shaanxi, so it is of practical significance for the regulation of regional ecosystem pattern by clarifying the characteristics of ecological suitability zoning of jujube and the response process to environmental factors. 【Method】The ecological suitability zoning of jujube was analyzed by GIS, and the driving mechanism of environmental factors was determined through geographical detector model in our study. 【Result】 (1) The zoning levels of ecological suitability of jujube decreased progressively from the east and south of northern Shaanxi to the northwest. The optimal and sub-suitable areas were concentrated in Fu County; generally suitable regions with large planting area were mainly distributed in the districts and counties along the west region of the Yellow River in northern Shaanxi. (2) Climatic factors and topographic factors had a greater influence on the ecological suitability of jujube, and had significant difference, showing an interaction effect of mutual enhancement or nonlinear enhancement. (3) Annual precipitation, elevation and annual accumulated temperature (≥10 ℃) were the main driving factors. The ecological suitability index of jujube was negatively correlated with annual precipitation and annual accumulated temperature, and was positively correlated with elevation. (4) Annual precipitation, elevation, and annual accumulated temperature explained 22.0%, 15.0% and 11.0% of the ecological suitability index of jujube, and the comprehensive interpretation rate reached 78.0%. 【Conclusion】The zoning levels of ecological suitability of jujube decreased significantly from southeast to northwest in Northern Shaanxi, and the development of regional jujube specialty industry and forest-dominated ecosystem pattern were regulated mainly by annual precipitation, elevation, annual accumulated temperature, and their interaction. |
| Key words: GIS; ecological suitability; geographical detector model; driving mechanism; jujube of Northern Shaanxi |
