干旱区绿洲廊道景观研究——以金塔绿洲为例

应用生态学报 ›› 2002, Vol. ›› Issue (12): 1624-1628.

干旱区绿洲廊道景观研究——以金塔绿洲为例

马明国¹, 曹宇², 程国栋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. 中国科学院沈阳应用生态研究所, 沈阳110016

收稿日期:2001-10-26 修回日期:2002-03-11
通讯作者: 曹宇
基金资助:
中国科学院知识创新工程重大项目(KZCX1-SW-04);中国科学院寒区旱区环境与工程研究所知识创新工程资助项目(CACX210018)

Oasis corridor landscape in arid regions:A case study of Jinta Oasis

MA Mingguo¹, CAO Yu², CHENG Guodong ¹

1. The State Key Laboratory of Frozen Soil Engineering, CAEERI, Chinese Academy of Sciences, Lanzhou 730000;
2. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016

Received:2001-10-26 Revised:2002-03-11

摘要/Abstract

摘要： 干旱区绿洲内主要廊道景观类型包括河流、水渠、田间防护林和公路等.以金塔绿洲为例,介绍廊道景观在绿洲的形成与发展过程中传输物质和能量、阻隔荒漠景观扩展和入侵的基本生态功效.利用GIS方法分析试验区内的廊道分布状况以及与各类景观之间的空间关系.在近10年景观格局的动态变化监测的基础上,分析廊道的驱动作用.结果表明,用长度和宽度、周长和面积比、密度和非均匀度来表示廊道的各种特性;金塔绿洲廊道总长为1838.5km,密度为2.1km·km^-2,以渠道和公路为主;水浇地、林地和城镇居民地廊道密度最大,受影响程度最高;绿洲内沟渠廊道质量的改进是影响水浇地等景观变化的重要驱动力之一.

关键词: 干旱区, 绿洲, 廊道景观, 叶绿素荧光, 柑橘, 干旱, 光合作用, 根系构型

Abstract: In arid region oasis, the main corridor landscape types include river, ditch, shelterbelt and road. This paper introduced their basic ecological effects on transporting mass and energy and on obstructing desert landscape expansion and incursion. Using Geographic Information System (GIS), the corridor distribution and its spatial relationship with other landscape types in the Jinta Oasis were analyzed. Based on the dynamically monitoring on the landscape pattern change of the Jinta Oasis during the latter 10 years, the driving functions of the corridors on this change were analyzed in detail. The results showed that all kinds of corridors' characteristics could be quantified by the indexes such as length and width, ratio of parameter and area, density,and non heterogeneity. The total corridor length of Jinta Oasis is 1838.5 kilometers and its density is 2.1 km穔m^-2 .The corridor density of the irrigated land, forest and resident area is maximal,showing that the affection degree of the oasis corridors on them is the most. The improvement of the corridor quality is one of the important driving factors on the irrigated land.

Key words: Arid regions, Oasis, Corridor landscape, citrus seedling, root architecture, chlorophyll fluorescence, drought, photosynthesis

中图分类号:

Q149

马明国, 曹宇, 程国栋. 干旱区绿洲廊道景观研究——以金塔绿洲为例[J]. 应用生态学报, 2002, (12): 1624-1628.

MA Mingguo, CAO Yu, CHENG Guodong . Oasis corridor landscape in arid regions:A case study of Jinta Oasis[J]. Chinese Journal of Applied Ecology, 2002, (12): 1624-1628.

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