甘肃民勤绿洲的景观格局变化及驱动力分析

应用生态学报 ›› 2003, Vol. ›› Issue (4): 535-539.

甘肃民勤绿洲的景观格局变化及驱动力分析

宋冬梅¹, 肖笃宁^1,3, 张志城², 曹宇¹, 马明国³, 王建华³, 王建³

1. 中国科学院沈阳应用生态研究所, 沈阳 110016;
2. 中国科学院地理科学与资源研究所, 北京 100101;
3. 中国科学院寒区旱区环境与工程研究所, 兰州 730000

收稿日期:2002-02-02 修回日期:2002-05-17
通讯作者: 宋冬梅,女,1973年生,博士生,主要从事景观生态学方面研究,发表论文2篇.E-mail:songdm_2000@yahoo.com.cn.
基金资助:
国家自然科学基金重点资助项目(90102004).

Landscape changes of Minqin oasis in Gansu Province and its driving force

SONG Dongmei¹, XIAO Duning^1,3, ZHANG Zhicheng², CAO Yu¹, MA Mingguo³, WANG Jianhua³, WANG Jian³

1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
2. Institute of Geographical Sciences and Nature Resources Research, Chinese Academy of Sciences, Beijing 100101, China;
3. Cold and Arid Region Environmental and Engineering Resource Institute, Chinese Academy of Sciences, Lanzhou 730000, China

Received:2002-02-02 Revised:2002-05-17

摘要/Abstract

摘要： 应用GIS、RS技术与景观格局分析软件FRAGSTATS研究了甘肃省民勤绿洲近14年间的景观格局变化.结果表明,该绿洲的各类景观拼块体在此期间发生了十分复杂的时空转换,荒漠化过程与开荒过程同时存在,绿洲毁林、毁草开荒过程主要发生在1994～1998年期间,并集中分布在绿洲南部水资源条件较好的地带,土地弃耕化过程主要发生在1998～2001年期间,集中分布在绿洲北部水资源条件较差地带;Shannon多样性指数、Shannon均匀度指数的下降与蔓延度指数的上升表明了人类对绿洲景观改造程度的不断加强,绿洲仍然维持着以耕地与居民地为主的强烈人为干扰的人工绿洲景观.人类不合理的土地利用方式改变了绿洲景观的空间格局,水资源条件的变化进一步促进了景观结构的演变.

关键词: 民勤绿洲, 景观变化, 景观指数, 驱动力, 京津冀, 沉积物, 污染物, 饮用水源地, 赋存形态

Abstract: Based on the technology of GIS, RSand using FRAGSTATS, studies on the landscape changes of Minqin oasis during1987 to 2001 showed that the transitions of landscape patches were complex, and open up wasteland took place during1994 to 1998 in the south of the oasis where the condition of water was better and desertization took place during1998 to 2001 in the north of the oasis where the condition of water was worse.The decreasing of the Shannon's diversity index and the Shannon's evenness index and the increasing of Contagion index showed that human beings reconstructing the landscape of the oasis began stronger than before.Unreasonable land use was changed the landscape pattern, and the condition of water resource accelerated the landscape change.

Key words: Minqin oasis, Landscape change, Landscape index, Driving force, sediment, Beijing-Tianjin-Hebei, drinking water source, pollutants, speciation

中图分类号:

Q149

宋冬梅, 肖笃宁, 张志城, 曹宇, 马明国, 王建华, 王建. 甘肃民勤绿洲的景观格局变化及驱动力分析[J]. 应用生态学报, 2003, (4): 535-539.

SONG Dongmei, XIAO Duning, ZHANG Zhicheng, CAO Yu, MA Mingguo, WANG Jianhua, WANG Jian. Landscape changes of Minqin oasis in Gansu Province and its driving force[J]. Chinese Journal of Applied Ecology, 2003, (4): 535-539.

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