绿洲景观空间邻接特征与生态安全分析

应用生态学报 ›› 2004, Vol. ›› Issue (1): 31-35.

绿洲景观空间邻接特征与生态安全分析

角媛梅^1,2, 肖笃宁¹

1. 中国科学院寒区旱区环境与工程研究所, 冻土工程国家重点实验室, 兰州, 730000;
2. 云南师范大学旅游与地理科学学院, 昆明, 650092

收稿日期:2002-10-28 修回日期:2003-02-20
通讯作者: 角媛梅,女,1972年生,在职博士,讲师,主要从事景观生态和文化生态研究,发表论文10余篇.Tel:09314967299.E-mail:ymjiao@sina.com.
基金资助:
国家自然科学基金重大项目(90102004);中国科学院知识创新工程重大资助项目(KZCX10904)

Spatial neighboring characteristics among patch types in oasis and its ecological security

JIAO Yuanmei^1,2, XIAO Duning ¹

1. State Key Laboratory of Frozen Soil Engineering of Cold and Arid Regions Environmental and Engineering Institute, Chinese Academy of Sciences, Lanzhou 730000, China;
2. College of Tourist and Geography, Yunnan Normal University, Kunming 650092, China

Received:2002-10-28 Revised:2003-02-20

摘要/Abstract

摘要： 以金塔绿洲为例,运用ArcView3.0a计算了绿洲景观类型与沙地和盐碱沼泽地的空间邻接长度和数目比例,利用地理缓冲区分析方法计算了沙地和盐碱沼泽地对绿洲景观面积的影响,提出了绿洲生态安全受胁程度的计算方法.结果表明,绿洲景观类型与沙地和盐碱沼泽地的空间邻接边长和数目的差异较大;受沙地和盐碱沼泽地影响的面积在景观类型中也存在差异;草地和耕地与沙地的邻接边长和数目较大,受沙漠化的威胁比较重,而林地和耕地受盐渍化的威胁比较严重;基于景观类型空间邻接的生态安全评价分析可以初步反映绿洲景观受沙漠化和盐渍化的威胁程度.

关键词: 空间邻接特征分析, 绿洲, 生态安全评价, 金塔县

Abstract: In this paper, the spatial neighboring length and number between oasis types and desert or salina-marsh in the Jinta Oasis located in the arid Heihe River Basin of Northwest China were calculated by using ArcView3.0a and buffer zone analysis methods, and the threatening degree of oasis ecological security was discussed. The results indicated that it was different in neighboring length and number between oasis types and desert or salina-marsh, and the influencing area by desert and salina-marsh patches was also different. Grassland and farmland had more neighboring length and numbers with desert or salina-marsh patches, and impacted by desertification seriously. Forest and farmland had more length and numbers adjacent to salina-marsh, and influenced by salinization severely. The assessment of ecological security based on spatial analysis could reveal the threatening degree of oasis by desertification and salinization.

Key words: Spatial neighboring characteristics, Oasis, Ecological security, Jinta County

中图分类号:

Q149

角媛梅, 肖笃宁. 绿洲景观空间邻接特征与生态安全分析[J]. 应用生态学报, 2004, (1): 31-35.

JIAO Yuanmei, XIAO Duning . Spatial neighboring characteristics among patch types in oasis and its ecological security[J]. Chinese Journal of Applied Ecology, 2004, (1): 31-35.

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