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中国农学通报 ›› 2016, Vol. 32 ›› Issue (35): 88-93.doi: 10.11924/j.issn.1000-6850.casb16040118

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

石羊河下游河岸带的景观结构及变化

刘淑娟,刘世增,袁宏波,郭春秀,刘虎俊   

  1. 甘肃省治沙研究所 甘肃省荒漠化与风沙灾害防治重点实验室-省部共建国家重点实验室培育基地,甘肃省治沙研究所 甘肃省荒漠化与风沙灾害防治重点实验室-省部共建国家重点实验室培育基地,甘肃省治沙研究所 甘肃省荒漠化与风沙灾害防治重点实验室-省部共建国家重点实验室培育基地,甘肃省治沙研究所 甘肃省荒漠化与风沙灾害防治重点实验室-省部共建国家重点实验室培育基地,甘肃省治沙研究所 甘肃省荒漠化与风沙灾害防治重点实验室-省部共建国家重点实验室培育基地
  • 收稿日期:2016-04-19 修回日期:2016-11-30 接受日期:2016-06-24 出版日期:2016-12-26 发布日期:2016-12-26
  • 通讯作者: 刘淑娟
  • 基金资助:
    国家自然基金项目“石羊河尾闾(青土湖)水面形成的生态效应研究”(31160116);“人为干预下石羊河下游地下水动态变化及生态效应研 究”(31260129);甘肃省基础研究创新群体项目(145RJIA335)。

Landscape Structure and Changes of Riparian Zone in the Lower Reaches of Shiyang River

刘淑娟,,, and   

  • Received:2016-04-19 Revised:2016-11-30 Accepted:2016-06-24 Online:2016-12-26 Published:2016-12-26

摘要: 应用景观生态学和空间对比分析方法,探讨石羊河下游流水和断流河段的河岸带景观,对其绿洲形成、分布及其结构调控和生态环境改善据有参考意义。结果表明:景观要素发生和分布受到河流地貌约束,顺直型河道区域的景观丰富度约为分汊型和漫流型的2倍,在漫流型河道区域以农田为优势斑块。流水和断流河段的景观结构分别呈带状水平结构和镶嵌结构,而斑块丰富度逐渐降低,均匀度增大。地下水位深度达7-8 m引发景观组成和结构变化,距离河床约200 m是河岸带景观发生转变的区域。石羊河下游河岸带景观变化时间与河流改道及水利改造时间相一致,因人类土地利用方式增减景观要素,区域水资源变化促进景观演变。河岸带景观结构是区域绿洲结构的基础。

关键词: 碳关税, 碳关税, 立法实践, 合理性, WTO规则, 法律应对

Abstract: Using landscape ecological investigating and spatial analyzing and comparing to determine the structure, landscape types and the changes of riparian bank in lower reaches of Shiyang River, it would provide reference for habitat selection of regional population, ecological function area planning and adjustment of the production structure. The results showed that: the occurrence and distribution of landscape elements constrained by fluvial geomorphology. The richness number of straight river channel was 2 times as that of branch and sheetflood. The farmland was a dominance plaque at sheetflood region. The landscape of riparian bank changed from strip to patch mosaic distribution, as well as patch richness decreased gradually and the uniformity increased from runoff to cutoff in lower reaches of Shiyang River. The landscape composition and structure changes caused by groundwater depth of 7-8 m, the riparian landscape change area were a distant from the riverbed about 200 m. landscape changes time of Shiyang River downstream riparian zone were consistent with the time of transformation of river diversions and water conservancy, due to human land use patterns changed the landscape elements, the regional water changes promoted the landscape evolution. The riparian landscape atructure is the foundation of regional oasis structure.

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