X img

官方微信

img

群号:冰川冻土交流群

QQ群:218834310

高级检索
作者投稿 专家审稿 编辑办公 编委办公 主编办公

冰川冻土 ›› 2015, Vol. 37 ›› Issue (6): 1670-1679.doi: 10.7522/j.issn.1000-0240.2015.0184

• 寒旱区生物学 • 上一篇    下一篇

敦煌西湖荒漠-湿地生态系统植被与土壤水分空间异质性研究

陈文业1 2 4, 赵明1 2 4, 张继强1 2 4, 李广宇1 2 4, 吴三雄3 4, 袁海峰3 4, 窦英杰3 4, 吴婷3 4, 陈旭3 4, 罗文莉1 2 4, 朱丽1 2 4, 邴丹珲1 2 4, 冯颖1 2 4, 孙飞达5, 谈嫣蓉1 2 4   

  1. 1. 甘肃省林业科学研究院, 甘肃 兰州 730020;
    2. 甘肃林研科技工程公司, 甘肃 兰州 730020;
    3. 甘肃敦煌西湖国家级自然保护区管理局, 甘肃 敦煌 736200;
    4. 甘肃敦煌西湖湿地生态系统国家定位观测研究站, 甘肃 敦煌 736200;
    5. 四川农业大学 草业科学系, 四川 雅安 625014
  • 收稿日期:2015-09-27 修回日期:2015-11-05 出版日期:2015-12-25 发布日期:2016-05-11
  • 通讯作者: 李广宇,E-mail:gschzx@163.com. E-mail:gschzx@163.com
  • 作者简介:陈文业(1978-),男,甘肃白银人,副研究员,2002年毕业于甘肃农业大学,主要从事生态恢复研究.E-mail:gschwy@163.com
  • 基金资助:
    甘肃省科技重大专项计划项目(1302FKDA035);甘肃省科技支撑计划项目(1011FKCA136)资助

Spatial heterogeneity of vegetation and soil moisture in the desert-wetland ecosystem in Dunhuang Xihu, Gansu Province, China

CHEN Wenye1 2 4, ZHAO Ming1 2 4, ZHANG Jiqiang1 2 4, LI Guangyu1 2 4, WU Sanxiong3 4, YUAN Haifeng3 4, DOU Yingjie3 4, WU Ting3 4, CHEN Xu3 4, LUO Wenli1 2 4, ZHU Li1 2 4, BING Danhui1 2 4, FENG Ying1 2 4, SUN Feida5, TAN Yanrong1 2 4   

  1. 1. Gansu Forestry Science and Technology Research Academy, Lanzhou 730020,China;
    2. Gansu Forest Science and Technology Engineering Company, Lanzhou 730020, China;
    3. Administrative Bureau of Gansu Dunhuang Xihu National Nature Reserve, Dunhuang 736200, Gansu, China;
    4. National Positioning Observation Station of Dunhuang Xihu Wetland Ecosystem in Dunhuang of Gansu, Dunhuang 736200, Gansu, China;
    5. Department of Grassland Science, Sichuan Agricultural University, Ya'an, 625014, Sichuan, China
  • Received:2015-09-27 Revised:2015-11-05 Online:2015-12-25 Published:2016-05-11

摘要: 基于敦煌西湖荒漠-湿地生态系统植被与土壤特性调查, 采用地统计学方法, 研究了敦煌西湖荒漠-湿地生态系统的土壤水分和植被的空间变异特征. 结果表明: 研究区植被盖度、高度和多度的平均值分别为36.14%、80.42 cm和0.66株·m2, 变异系数依次为117.52%、124.63%和36.50%, 植被盖度和高度均为高度变异, 植被多度为中等变异; 0~200 cm土层各层土壤湿度平均值为14.873%, 介于6.681%~ 23.004%, 变异系数介于39.28%~88.65%. 200 cm土层水分贮量平均值为163.598 mm, 变异系数为36.51%, 0~200 cm土层各层土壤湿度和2 m土层水分贮量均为中等变异. 植被特征与土壤特性各要素的基台值(C0+C)介于0.112~0.549, 结构比介于76.6%~97.6%, 各变量具有较强的空间自相关性. 研究区植被型组由盐池湾向南呈沼泽→盐沼→草甸→阔叶林→荒漠演变过程, 植被特征与土壤特性在样带空间分布上具有明显的规律性, 且存在较强的空间自相关性和格局.

关键词: 敦煌西湖, 湿地生态系统, 土壤水分, 植被, 空间异质性

Abstract: Based on the investigation of vegetation and soil properties, the spatial heterogeneity of vegetation and soil moisture in Dunhuang Xihu desert-wetland ecosystem were studied with geostatistics. The results showed that the vegetation coverage, height and density were 36.14%, 80.42 cm and 0.66 plant·m-2; the variation coefficient of vegetation coverage and height were 117.52%, 124.63%, characterized with highly divergent, but the variation coefficient of vegetation density was 36.50%, characterized with medium divergent; the soil moisture from 0 to 200 cm depth ranged from 6.681% to 23.004%, and the variation coefficient was between 39.28% and 88.65%; the moisture stored in the 200 cm soil was 163.598 mm on average, with a variation coefficient of 36.51%. Thus, the soil moisture from 0 to 200 cm depth and the moisture stored in the soil of 200 cm both were characterized with medium divergent; sill (C0+C) of vegetation characteristics and soil properties varied from 0.112 to 0.549, with texture ratio between 0.766% and 0.976% and high spatial autocorrelation of all variables; the succession of vegetation type group showed a regularity as swamp→saline marsh→meadow→broad-leaved forest→desert southwards from Yanchiwan, also the vegetation characteristics and soil properties presented obvious spatial regularity and high spatial autocorrelation.

Key words: Dunhuang Xihu, wetland ecosystem, soil moisture, vegetation, spatial heterogeneity

中图分类号: 

  • P343.4