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

doi:10.7522/j.issn.1000-0240.2015.0184

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

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. 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 Wenye^{1 2 4}, ZHAO Ming^{1 2 4}, ZHANG Jiqiang^{1 2 4}, LI Guangyu^{1 2 4}, WU Sanxiong^{3 4}, YUAN Haifeng^{3 4}, DOU Yingjie^{3 4}, WU Ting^{3 4}, CHEN Xu^{3 4}, LUO Wenli^{1 2 4}, ZHU Li^{1 2 4}, BING Danhui^{1 2 4}, FENG Ying^{1 2 4}, SUN Feida⁵, TAN Yanrong^{1 2 4}

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/Abstract

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

陈文业, 赵明, 张继强, 李广宇, 吴三雄, 袁海峰, 窦英杰, 吴婷, 陈旭, 罗文莉, 朱丽, 邴丹珲, 冯颖, 孙飞达, 谈嫣蓉. 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[J]. 冰川冻土, 2015, 37(6): 1670-1679.

CHEN Wenye, ZHAO Ming, ZHANG Jiqiang, LI Guangyu, WU Sanxiong, YUAN Haifeng, DOU Yingjie, WU Ting, CHEN Xu, LUO Wenli, ZHU Li, BING Danhui, FENG Ying, SUN Feida, TAN Yanrong. Spatial heterogeneity of vegetation and soil moisture in the desert-wetland ecosystem in Dunhuang Xihu, Gansu Province, China[J]. JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY, 2015, 37(6): 1670-1679.

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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

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

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