苏北平原灌区小水利工程对沟渠水文连通结构的影响

doi:10.13287/j.1001-9332.202105.020

应用生态学报 ›› 2021, Vol. 32 ›› Issue (5): 1653-1662.doi: 10.13287/j.1001-9332.202105.020

苏北平原灌区小水利工程对沟渠水文连通结构的影响

吴玉琴¹, 邱春琦², 徐嘉仪¹, 李玉凤^2*, 刘红玉², 王刚¹

¹南京师范大学地理科学学院, 南京 210023;
²南京师范大学海洋科学与工程学院, 南京 210023

收稿日期:2020-08-02 接受日期:2020-10-20 出版日期:2021-05-15 发布日期:2021-11-15
通讯作者: *E-mail: pandalee_0826@163.com
作者简介:吴玉琴,女,1995年生,硕士研究生。主要从事湿地水文和水资源研究。E-mail:861739741@qq.com
基金资助:
国家自然科学基金项目(41871188,31971547)、江苏省科技计划项目(社会发展-重大科技示范项目)(BE[2018]681)和江苏省自然资源发展专项(JSZRHYKJ[2020]03)资助

Effects of small irrigation facilities on hydrological connectivity of ditches in North Jiangsu Plain, China.

WU Yu-qin¹, QIU Chun-qi², XU Jia-yi¹, LI Yu-feng^2*, LIU Hong-yu², WANG Gang¹

¹School of Geography, Nanjing Normal University, Nanjing 210023, China;
²School of Marine Science and Engineering, Nanjing Normal University, Nanjing 210023, China

Received:2020-08-02 Accepted:2020-10-20 Online:2021-05-15 Published:2021-11-15
Contact: *E-mail: pandalee_0826@163.com
Supported by:
National Natural Science Foundation of China (41871188, 31971547), the Technology Plan Project of Jiangsu Province (Social Development-Major Technology Demonstration Project) (BE[2018]681) and the Special Fund of Natural Resources Development of Jiangsu Province (JSZRHYKJ[2020]03).

摘要/Abstract

摘要： 平原灌区的水文情势复杂,且受农村小水利工程及人为管理影响强烈。本研究选取典型平原灌区——苏北阜东灌区作为研究区,构建沟渠网络连通指标及农村小水利工程的影响指标来定量分析水文连通程度,利用自组织特征映射(SOM)分析法,判断小水利工程对研究区沟渠网络结构连通性空间异质性的影响。结果表明: 阜东灌区各区域水文结构连通差异较大。其中,灌区北部连通性最好,灌区中南部连通性最差。研究区共有876个泵站、633个闸点和2420个涵洞。在没有小水利工程影响时,水文结构连通性极差的行政村共有13个,连通性较好和连通性最好的行政村共48个。在小水利工程的影响下,连通性极差的行政村减为8个,连通性较好和连通性最好的行政村增加为53个。由于闸点和涵洞的影响,阜东灌区共有26个行政村的水文结构连通性变差;由于泵站的影响,39个行政村的水文结构连通性得到改善。

关键词: 沟渠网络, 水文连通性, 自组织特征映射, 聚类分析, 平原灌区

Abstract: Hydrological conditions in the plains irrigation area are complex, which are strongly affected by small irrigation facilities and human management. In this study, the connectivity index of ditch network and the influence index of rural small irrigation facilities were constructed to quantitatively analyze the hydrological connectivity of a typical plain irrigation area, Fudong irrigation area, in north Jiangsu Province. The self-organizing feature map (SOM) analysis method was used to identify the effects of small irrigation facilities on the spatial heterogeneity of ditch network structure connectivity. The results showed that the hydrological structure connectivity differed in different regions of Fudong. The connectivity in the north of the irrigation area was the best, but the worst in the central and southern part of the irrigation area. There were 876 pumps, 633 gates and 2420 culverts in the study area. Without the effects of small irrigation facilities, there were 13 villages with poor hydrological structure connectivity and 48 villages with good and best hydrological structure connectivity. Under the effects of small irrigation facilities, the number of villages with poor connectivity was reduced to 8, while the number of villages with good and best connectivity was increased to 53. Due to the influence of gates and culvert, the hydrological connectivity of 26 villages in Fudong became poor. The hydrological connectivity of 39 villages had been enhanced due to the existence of pump.

Key words: ditch network, hydrological connectivity, self-organizing feature map (SOM), cluster analysis, plain irrigation area

吴玉琴, 邱春琦, 徐嘉仪, 李玉凤, 刘红玉, 王刚. 苏北平原灌区小水利工程对沟渠水文连通结构的影响[J]. 应用生态学报, 2021, 32(5): 1653-1662.

WU Yu-qin, QIU Chun-qi, XU Jia-yi, LI Yu-feng, LIU Hong-yu, WANG Gang. Effects of small irrigation facilities on hydrological connectivity of ditches in North Jiangsu Plain, China.[J]. Chinese Journal of Applied Ecology, 2021, 32(5): 1653-1662.

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苏北平原灌区小水利工程对沟渠水文连通结构的影响

Effects of small irrigation facilities on hydrological connectivity of ditches in North Jiangsu Plain, China.

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