自然资源学报 ›› 2017, Vol. 32 ›› Issue (1): 137-151.doi: 10.11849/zrzyxb.20160166
任怡, 王义民*, 畅建霞, 黄强
收稿日期:
2016-02-24
出版日期:
2017-01-15
发布日期:
2017-01-15
通讯作者:
王义民(1972- ),男,山西省新绛人,教授,主要从事水文水资源研究。E-mail: wangyimin@xaut.edu.cn
作者简介:
任怡(1991- ),女,山西省文水人,硕士研究生,主要从事水文水资源研究。E-mail: 576832828@qq.com *
基金资助:
REN Yi, WANG Yi-min, CHANG Jian-xia, HUANG Qiang
Received:
2016-02-24
Online:
2017-01-15
Published:
2017-01-15
Supported by:
摘要: 识别区域的干旱时空特征对于防旱抗旱具有重要指导意义。论文采用两种方法研究了陕西省干旱时空分布特征并比较了两种方法在应用中的优缺点:其一,考虑社会经济因素对干旱的影响,采用基于水资源供水和需水平衡的陕西省社会经济干旱指标(水资源供求指数);其二,结合SPI、PDSI和SPEI的特点,运用模糊综合法建立了综合干旱指数。结果表明:陕西省干旱发生频率很高,南北多发生轻微干旱,中部多发生中重度干旱。陕西省干旱在空间上分布差异大,两种方法均表明咸阳、西安、渭南和铜川地区旱情最为严重。在水资源量存在巨大差异的地区,如商洛与榆林,仅用一种类型的干旱指标无法全面体现实际情况,两种方法的结论存在差异:综合干旱指数表明榆林干旱较重,但供求指数为轻旱;商洛供水可满足需水,但综合干旱指数为轻旱。气象干旱指数,在水资源短缺的地区或自然生态系统中,结果更贴近于实际;社会经济干旱指数——水资源供求指数,更适宜用于水资源极其丰富且供水能力强的地区。
中图分类号:
任怡, 王义民, 畅建霞, 黄强. 陕西省水资源供求指数和综合干旱指数及其时空分布[J]. 自然资源学报, 2017, 32(1): 137-151.
REN Yi, WANG Yi-min, CHANG Jian-xia, HUANG Qiang. The Spatial and Temporal Distribution of Drought in Shaanxi Province[J]. JOURNAL OF NATURAL RESOURCES, 2017, 32(1): 137-151.
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