Abstract
Effects of nitrogen amendments on spring annual plant distribution, primary production, and species diversity in a semi-arid environment were studied. The ecological responses of spring annual plant species to nitrogen differed between species, and between sites. The distribution of each species in a control transect was wider than in a nitrogen-treated transect. Annual plant species diversity at each station in the control transect was higher than that of the nitrogen-treated transect. The lower site of the Lower Basin Slope areas had the highest species diversity (0.94 for the control and 0.84 for the nitrogen-treated), and the Upper Basin Slope area, shrub vegetation zone, had the lowest species diversity (0.27 for the control and 0.05 for the nitrogen-treated) in both transects. Inorganic nitrogen in the nitrogen-treated transect soils was consistently higher than that in the control transect soils; however, the former showed more fluctuation from station to station than the latter. Above-ground biomass of spring annual plants in the nitrogen-treated transect was consistently higher than that in the control at each station. The maximum above-ground biomass in the control and nitrogen-treated transect was 24.4±4.4 gm−2 and 61.2±10.6 gm−2, respectively. Variations in above-ground biomass along the transect did not parallel with the variation in inorganic nitrogen in soils and species diversity.
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References
Aandahl A R 1949 The characterization of slope positions and their influence on the total nitrogen content of a few virgin scils of western Iowa. Soil Sci. Soc. Am. Proc. 13, 440–454.
Cornelius J M and Cunningham G.L (1987) Nitrogen enrichment effects on vegetation of a northern Chichuahuan Desert landscape. Strategies for Classification and Management of Native Vegetation for Food Production in Arid Zones. pp 112–116.
Ettershank G, Ettershank J, Bryant M and Whitford W G 1978 Effects of nitrogen fertilization of primary production in a Chihuahuan Desert ecosystem. J. Arid Environ. 1, 135–139.
Gutierrez J and Whitford W G 1987 Chihuahuan Desert annuals: Importance of water and nitrogen. Ecology 68, 2032–2045
Jensen H L 1965 Nonsymbiotic nitrogen fixation.In Soil Nitrogen. Eds. W V Bartholomew and F E Clark. pp 436–480. Am. Soc. Agronomy, Inc. Publisher.
Kirchner T 1977 The effects of resource enrichment on the diversity of plants and arthropods in a shortgrass prairie. Ecology 58, 1334–1344.
Klikoff L G and Freeman D C 1974 Ecology of cool desert annuals. US/IBP Desert Biome Res. Memo 74–15. 8 p.
Milton W E J 1940 The effect of manuring, grazing and liming on yield botanical and chemical composition of natural hill pastures. J. Ecol. 28, 326–356.
Milton W E J and Davies R O 1947 The yield, botanical and chemical composition of natural hill herbage under manuring controlled grazing and hay conditions. J. Ecol. 35, 262–270.
Nelson D W 1983 Determination of ammonium in KCl extracts of soils by the salicylate method. Commun. Soil Sci. Plant Anal. 14, 1051–1062.
Pielou E C 1966 The measurement of diversity in different types of biological collections. J. Theor. Biol. 13, 131–144.
Silvertown J 1980 The dynamics of a grassland ecosystem: Botanical equilibrium in the Park Grass Experiment. J. Appl. Ecol. 17, 491–504.
Stevenson F J 1965 Origin and distribution of nitrogen in soil.In Soil Nitrogen. Eds. W V Barholomew and F E Clark. pp 1–42. Am. Soc. Agronomy Inc. Publisher.
Tilman D 1982 Resource Competition and Community Structure. Princeton Univ. Press, Princeton, NJ, 296 p.
Wallace A, Romney E M, Kleinkopf G E and Soufi S M 1978 Uptake of mineral forms of nitrogen by desert plants.In Nitrogen in desert Ecosystems. Eds. N E West and J J Skujins. pp 130–151. Dowden, Hutchinson and Ross, Stroudsburg, PA.
West N E and Skujins J J 1978 Nitrogen in desert Ecosystems. Dowden, Hutchinson and Ross, Stroudsburg, PA.
Wierenga P J, Hendrickx J M H, Nash M H, Ludwig L and Daugherty L A 1987 Variation of soil and vegetation with distance along a transect in the Chihuahuan Desert. J. Arid Environ. 13, 53–63.
Wondzell S M, Cunningham G L and Bachelet D 1987 A hierarchial classification of landforms: Some implications for understanding local and regional vegetation dynamics. Strategies for Classification and Management of Native Vegetation for food Production in Arid zones. pp 15–23.
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Mun, H.T., Whitford, W.G. Effects of nitrogen amendment on annual plants in the Chihuahuan Desert. Plant Soil 120, 225–231 (1989). https://doi.org/10.1007/BF02377072
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DOI: https://doi.org/10.1007/BF02377072