| 引用本文: | 何钊全,尚 雪,张铜会,等.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,2022,41(12):97-106. |
| HE Zhaoquan,SHANG Xue,ZHANG Tonghui,et al.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,2022,41(12):97-106. |
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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年降水量、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水量和年积温极显著负相关，与高程极显著正相关。④年降水量、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，主要通过年降水量、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：10.13522/j.cnki.ggps.2022083 |
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| Suitability Regionalization of Jujube Production in Northern Shaanxi Province Calculated Using GIS Coupled with Geographical Detector |
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HE Zhaoquan , SHANG Xue , ZHANG Tonghui , YUN Jianying
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1. Shaanxi Key Laboratory of Chinese Jujube, Yan’an University, Yan’an 716000, China; 2. School of Life Sciences, Yan’an University, Yan’an 716000, China; 3. Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
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| Abstract: |
| 【Objective】 Jujube is one of the cash crops in northern Shaanxi. Understanding the suitable areas and conditions for its growth is important to its sustainable production but is currently lacking. This paper is to fill this knowledge gap. 【Method】The analysis is based on GIS; the suitability for jujube growth in different areas is analyzed using the geographical detector model. 【Result】①The suitability for jujube growth decreases progressively from the east and south to the northwest of the region, with the optimal area and sub-optimal area concentrated in Fu county. Suitable areas with large jujube planting are mainly in the districts and counties along the western region of the Yellow River. ②Climatic and topographic factors combine to greatly influence the suitability of jujube, and their effects are nonlinearly confounded. ③Annual precipitation, elevation and annual accumulative temperature (≥10 ℃) are the main factors controlling suitability for jujube growth, and the suitability index is negatively correlated with annual precipitation and annual accumulated temperature, and positively with elevation. ④Annual precipitation, elevation and annual accumulated temperature explain 22%, 15% and 11% of the suitability index, respectively, and the comprehensive interpretation rate reaches 78%.【Conclusion】The suitability for jujube growth in northern Shaanxi province decreases from the southeast to the northwest; developing jujube industry or forest ecosystem in this region should consider the jointed effects of annual precipitation, elevation and annual accumulated temperature. |
| Key words: GIS; ecological suitability; geographical detector model; driving mechanism; Jujube of Northern Shaanxi |
