地理科学进展 ›› 2020, Vol. 39 ›› Issue (2): 243-254.doi: 10.18306/dlkxjz.2020.02.006
收稿日期:
2019-03-14
修回日期:
2019-05-16
出版日期:
2020-02-28
发布日期:
2020-04-28
通讯作者:
陈海
作者简介:
刘迪(1993— ),男,河南郑州人,博士生,主要从事综合自然地理与景观生态研究。E-mail:lcx@stumail.nwu.edu.cn
基金资助:
LIU Di, CHEN Hai*(), GENG Tianwei, ZHANG Hang, SHI Qinqin
Received:
2019-03-14
Revised:
2019-05-16
Online:
2020-02-28
Published:
2020-04-28
Contact:
CHEN Hai
Supported by:
摘要:
论文采用“概率—损失”二维风险模型解构陕西省区域生态风险,基于地貌分区视角识别多源风险类型的同时以景观格局与生态系统服务价值为关联要素合成潜在生态损失,在此基础上分析了陕西省2000—2015年单一风险要素及区域生态风险的时空分异,并基于地貌分区视角结合重心模型探讨了生态风险的时空迁移。结果如下:① 2000、2015年陕西省多源危险度分别为0.3837、0.4558,上升18.79%,大致呈现南北高、中间低的空间格局,沿南北轴线呈现“W型”展布;潜在生态损失分别为0.5537、0.6270,上升13.24%,除高原南部与秦岭东部山区外,生态损失均呈现高值;区域生态风险分别为0.2429、0.2865,上升17.95%,空间上呈现“三高夹两低”的分布格局。② 从时序变化来看,秦巴山地保持较低风险且风险变化率较小;黄土高原与风沙过渡区变化率处于中等,后者面临较高风险;汉江盆地风险最高,该区域与关中平原分别为风险变化率的首位与次位。从生态风险重心变化趋势看,黄土高原与风沙过渡区重心均向西南移动,关中平原与秦岭山地重心东移趋势明显,汉江盆地与大巴山地重心跃向东南。
刘迪, 陈海, 耿甜伟, 张行, 史琴琴. 基于地貌分区的陕西省区域生态风险时空演变[J]. 地理科学进展, 2020, 39(2): 243-254.
LIU Di, CHEN Hai, GENG Tianwei, ZHANG Hang, SHI Qinqin. Spatiotemporal changes of regional ecological risks in Shaanxi Province based on geomorphologic regionalization[J]. PROGRESS IN GEOGRAPHY, 2020, 39(2): 243-254.
表2
陕西省单位面积生态系统服务价值"
一级类型 | 二级类型 | 耕地 | 林地 | 草地 | 水域 |
---|---|---|---|---|---|
供给服务 | 食物生产 | 37.98 | 8.10 | 10.61 | 22.34 |
原料生产 | 2.51 | 18.43 | 15.64 | 6.42 | |
水资源供给 | -73.46 | 9.49 | 8.65 | 231.56 | |
调节服务 | 气体调节 | 31.01 | 60.61 | 55.02 | 21.50 |
气候调节 | 15.92 | 181.56 | 145.53 | 63.96 | |
净化环境 | 4.74 | 53.91 | 48.04 | 155.02 | |
水文调节 | 75.97 | 132.40 | 106.70 | 2 855.90 | |
支持服务 | 土壤保持 | 0.27 | 74.02 | 67.03 | 25.97 |
维持养分循环 | 5.30 | 5.58 | 5.02 | 0.95 | |
生物多样性 | 5.86 | 67.31 | 60.89 | 71.22 | |
文化服务 | 美学景观 | 2.51 | 29.60 | 26.81 | 52.79 |
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