| 黄土高原潜在自然植被空间格局及其生境适宜性 |
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| 引用本文： | 韩庆功,彭守璋.黄土高原潜在自然植被空间格局及其生境适宜性[J].水土保持学报,2021,35(5):188-193,203. |
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| 作者姓名： | 韩庆功 彭守璋 |
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| 作者单位： | 1. 西北农林科技大学资源环境学院, 陕西 杨凌 712100;2. 西北农林科技大学黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西 杨凌 712100 |
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| 基金项目： | 国家自然科学基金项目（42077451）；中国工程院重大战略咨询研究项目（2020NXZD7）；宁夏回族自治区重点研发计划项目（2020BCF01001） |
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| 摘 要： | 植被生态系统的恢复越来越多地受到全球各界关注,潜在自然植被(potential natural vegetation, PNV)和生境适宜性概念应纳入植被规划,作为植被恢复的参考依据。基于高空间分辨率气候数据,使用动态植被模型(LPJ-GUESS),揭示黄土高原2001—2020年PNV空间格局及其生境适宜性的动态演变,并界定了植被优先恢复区。结果表明:黄土高原的PNV以草地和森林为主,潜在草地主要集中在北部、西北部地区(约占73.23%),潜在森林主要分布在南部地区(约占26.16%),极少的裸地主要分布在西部高海拔山区;在潜在森林中,温带落叶阔叶林、寒温性常绿针叶林、温带常绿针叶林占比分别为22.28%,3.88%,0.01%;随着气候变化的推进,潜在森林面积有所下降,而潜在草地面积有些许增加。PNV的生境适宜性呈现西北低、南部及东南高的分布,其中,分布在黄土高原南部平原地带的潜在温带落叶阔叶林其生境适宜性较高,而分布在北部及东北部的潜在草地其生境适宜性较低;并且,对于每种PNV类型,其最高生境适宜性所占据的地理空间及优先恢复区有较大差异。研究结果可为黄土高原植被恢复重建提供科学依据。
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| 关 键 词： | 植被恢复 潜在自然植被 生境适宜性 LPJ-GUESS模型 黄土高原 |
| 收稿时间： | 2021/4/10 0:00:00 |
Spatial Pattern and Habitat Suitability of Potential Natural Vegetation in the Loess Plateau |
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| HAN Qinggong,PENG Shouzhang.Spatial Pattern and Habitat Suitability of Potential Natural Vegetation in the Loess Plateau[J].Journal of Soil and Water Conservation,2021,35(5):188-193,203. |
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| Authors: | HAN Qinggong PENG Shouzhang |
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| Institution: | 1. College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100;2. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100 |
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| Abstract: | Global concern about the restoration and reconstruction of vegetation ecosystems has increased, thus the concepts of potential natural vegetation (PNV) and habitat suitability should be integrated into revegetation programs to achieve sustainable ecosystems. Based on high spatial resolution climate data, this study revealed the dynamic evolution of spatial pattern and habitat suitability of PNV during 2001-2020 in the Loess Plateau (LP) using a dynamic vegetation model (LPJ-GUESS), and identified the vegetation priority restoration area. The results showed that the main PNV in the LP were grassland and forest, and potential grassland was mainly distrubuted in the north and northwest regions (about 73.23% of LP area), while potential forest was mainly located in the south (about 26.16% of LP area), and very few barren ground was mainly distributed in the western high-altitude mountains. Among the potential forests, temperate deciduous broad-leaved trees, cold temperate evergreen coniferous forest and temperate evergreen coniferous trees accounted for about 22.28%, 3.88% and 0.01%, respectively. With the advance of climate change, the area of potential forest had decreased, while the area of potential grassland hand increased slightly. The habitat suitability of PNV was low in the northwest, high in the south and southeast. The potential temperate deciduous broad-leaved trees distributed in the southern plain of the LP had higher habitat suitability, while the potential grassland distributed in the northern and northeastern LP had lower habitat suitability. For each kind of PNV, the geographical space and priority restoration area occupied by its highest habitat suitability were significantly different. These reaserch results could provide a scientific basis for vegetation restoration and reconstruction in the Loess Plateau. |
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| Keywords: | vegetation restoration potential natural vegetation habitat suitability LPJ-GUESS model the Loess Plateau |
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