EFFECTS OF COPPICE DUNE TOPOGRAPHY AND VEGETATION ON SOIL-WATER DYNAMICS IN A COLD-DESERT ECOSYSTEM

被引：21

作者：

LINK, SO ^{[1
]}

WAUGH, WJ ^{[1
]}

DOWNS, JL ^{[1
]}

THIEDE, ME ^{[1
]}

CHATTERS, JC ^{[1
]}

GEE, GW ^{[1
]}

机构：

[1] RUST GEOTECH, Grand Junction, CO 81502 USA

来源：

JOURNAL OF ARID ENVIRONMENTS | 1994年 / 27卷 / 03期

关键词：

ARTEMISIA-TRIDENTATA; EVAPOTRANSPIRATION; GRAYIA-SPINOSA; IRRIGATION; PRECIPITATION; ROOTS; SOIL WATER STORAGE;

D O I：

10.1006/jare.1994.1063

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

The relationships of soil water dynamics to arid-land coppice dune/swale topography and associated plants were examined under normal and enhanced precipitation. Three conditions were compared: coppice dunes dominated by Grayia spinosa, sparsely vegetated swales, and swales dominated by Artemisia tridentata. Sparsely vegetated swales were wetter than G. spinosa coppice dunes or A. tridentata swales. The effect of enhanced precipitation on end-of-season soil water storage and profile patterns was negligible. Soil water storage was negatively correlated with the number and size of nearby plants. Root biomass was highest near the surface and decreased with depth down to 2 m. The root biomass under G. spinosa coppice dunes was 10 times greater than in sparsely vegetated swales or swales dominated by A. tridentata. Variability in soil water characteristics was more strongly associated with vegetation patterns than with topography. The swales dominated by A. tridentata were significantly drier than sparsely vegetated swales. This ecosystem can recycle at least two times normal precipitation to the atmosphere via evapotranspiration. © 1994 Academic Press Limited.

引用

页码：265 / 278

页数：14

共 34 条

[1]

Anderson J. E., 1987, Arid Soil Research and Rehabilitation, V1, P229, DOI 10.1080/15324988709381150

[2] SPECIES DISTRIBUTION AND COMMUNITY ORGANIZATION IN A NEBRASKA SANDHILLS MIXED PRAIRIE AS INFLUENCED BY PLANT SOIL-WATER RELATIONSHIPS [J].

BARNES, PW ;

HARRISON, AT .

OECOLOGIA, 1982, 52 (02) :192-201

[3] FACTORS INFLUENCING INFILTRATION AND SEDIMENT PRODUCTION OF SEMIARID RANGELANDS IN NEVADA [J].

BLACKBURN, WH .

WATER RESOURCES RESEARCH, 1975, 11 (06) :929-937

[4]

Blake G. R., 1986, Methods of soil analysis. Part 1. Physical and mineralogical methods, P363

[5]

Bohm W., 1979, Ecological Studies, V33

[6] MOISTURE RELATIONSHIPS IN 12 NORTHERN DESERT SHRUB COMMUNITIES NEAR GRAND JUNCTION, COLORADO [J].

BRANSON, FA ;

MILLER, RF ;

MCQUEEN, IS .

ECOLOGY, 1976, 57 (06) :1104-1124

[7]

Caldwell M. M., 1986, On the economy of plant form and function, P251

[8] WATER RELATIONS AND WATER-USE PATTERNS FOR ARTEMISIA-TRIDENTATA-NUTT IN WET AND DRY YEARS [J].

CAMPBELL, GS ;

HARRIS, GA .

ECOLOGY, 1977, 58 (03) :652-659

[9]

CAMPBELL MD, 1990, PNL7558 PAC NW LAB

[10]

DOBROWOLSKI JP, 1990, PLANT BIOL BASIN RAN, P243

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