Combined effects of snow depth and nitrogen addition on ephemeral growth at the southern edge of the Gurbantunggut Desert, China

Fan, Lei; Yan, Li; Tang, Lisong; Ma, Jian

doi:10.1007/s40333-013-0185-8

Cited by 31 publications

(22 citation statements)

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“…Previous studies indicated that plant biomass allocation differed among different life forms Luo et al, 2013;Zhou et al, 2014). Numerous studies have investigated ephemeral, ephemeroid and annual species in desert ecosystems, with a focus on their ecological contributions to the ecosystems (Li et al, 2003;Fan et al, 2013Fan et al, , 2014 or their physiological responses to changing environmental factors (Wang et al, 2006;Zhou et al, 2011;Su et al, 2013;Zhou et al, 2014). Although detailed quantitative information about plant biomass allocation patterns is still lacking, such information is required to allow us to analyze the possible ecological strategy benefits and to understand the regulate mechanism of desert plants responding to climate change.…”

Section: Introductionmentioning

confidence: 99%

Ecological biomass allocation strategies in plant species with different life forms in a cold desert, China

Fan

Ding

et al. 2019

J. Arid Land

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Biomass allocation patterns among plant species are related to their adaptive ecological strategies. Ephemeral, ephemeroid and annual plant life forms represent three typical growth strategies of plants that grow in autumn and early spring in the cold deserts of China. These plants play an important role in reducing wind velocity in the desert areas. However, despite numerous studies, the strategies of biomass allocation among plant species with these three life forms remain contentious. In this study, we conducted a preliminary quadrat study during 2014-2016 in the southern part of the Gurbantunggut Desert, China, to investigate the allocation patterns of above-ground biomass (AGB) and below-ground biomass (BGB) at the individual level in 17 ephemeral, 3 ephemeroid and 4 annual plant species. Since ephemeral plants can germinate in autumn, we also compared biomass allocation patterns between plants that germinated in autumn 2015 and spring 2016 for 4 common ephemeral species. The healthy mature individual plants of each species were sampled and the AGB, BGB, total biomass (TB), leaf mass ratio (LMR) and root/shoot ratio (R/S) were calculated for 201 sample quadrats in the study area. We also studied the relationships between AGB and BGB of plants with the three different life forms (ephemeral, ephemeroid and annual). The mean AGB values of ephemeral, ephemeroid and annual plants were 0.806, 3.759 and 1.546 g/plant, respectively, and the mean BGB values were 0.106, 4.996 and 0.166 g/plant, respectively. The mean R/S value was significantly higher in ephemeroid plants (1.675) than in ephemeral (0.154) and annual (0.147) plants. The mean LMR was the highest in annual plants, followed by ephemeroid plants and ephemeral plants, reflecting the fact that annual plants allocate more biomass to leaves, associated with their longer life span. Biomass of ephemeral plants that germinated in autumn was significantly higher than those of corresponding plants that germinated in spring in terms of AGB, BGB and TB. However, the R/S value was similar in plants that germinated in autumn and spring. The slope of regression relationship between AGB and BGB differed significantly among the three plant life forms. These results support different biomass allocation hypotheses. Specifically, at the individual level, the AGB and BGB partitioning supports the allometric hypothesis for ephemeroid and annual plants and the isometric hypothesis for ephemeral plants.

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Section: Introductionmentioning

confidence: 99%

Ecological biomass allocation strategies in plant species with different life forms in a cold desert, China

Fan

Ding

et al. 2019

J. Arid Land

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“…The effect of irrigating 12-14-years-old saksaul seed plants with 160 l and 80 l per tree on the apical annual growth of saksaul However, there is a global limit to the net primary productivity of land ecosystems [Le Bauer, Treseder, 2008;Vitousek, Howarth, 1991], including desert ecosystems [Hall et al, 2011;Hooper, Johnson, 1999;Krueger-Mangold et al, 2004;Yahdjian et al, 2011]. In addition, there were reports about the relationship between the effect of the water and adding nitrogen on the growth of desert plants, the structure, and the composition of ecosystem communities [Fan et al, 2013;Ladwig et al, 2012;Schmiedel et al, 2012].…”

Section: Resultsmentioning

confidence: 99%

The Effect of Irrigation on the Annual Apical Growth of the 12–14 Years Old Seed Plants of Black Saksaul

et al. 2020

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Since black saksaul reproduces only by seeds, the issues of seed propagation are of great interest. Saksaul plantings perform important soilprotective, environment-improving, sanitary, and hygienic functions [Shamsutdinov, 1984], contribute to the formation of stable and productive pastures, serve as the main base for distantpasture cattle rearing [Mambetov et al., 2017]; they are used for creating artificial pastures [Sychev, 2005], they are the habitat of rare animal species, and preserve the flora. Representatives of the Haloxylon genus-Haloxylon aphyllum and Haloxylon persicumgrow on the territory of Kazakhstan and occupy large areas in the Il-Balkhash region. Many researchers have studied the anatomical structure of the Haloxylon genus [Dosmanbetov et al., 2018; Kabanova, Danchenko, 2017]; among Russian scientists who performed anatomical studies Lee et al. [2013] are noted. To provide a theoretical base for the recommendations

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“…In arid and semi-arid ecosystems, water availability is the main factor limiting plant growth, community composition and community productivity (Yahdjian and Sala, 2006; Miranda et al, 2009; Robertson et al, 2009). Nitrogen can become the main limiting factor if drought stress is alleviated, and extra N combined with enough water can then promote plant growth and increase community productivity (Ladwig et al, 2012; Fan et al, 2013). Our study confirmed this in both the ephemeral and annual plants, as the pot experiment was conducted with adequate water.…”

Section: Discussionmentioning

confidence: 99%

The Growth and N Retention of Two Annual Desert Plants Varied Under Different Nitrogen Deposition Rates

Cui¹,

Yue²,

Wu³

et al. 2019

Front. Plant Sci.

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Nitrogen (N) partitioning between plant and soil pools is closely related to biomass accumulation and allocation, and is of great importance for quantifying the biomass dynamics and N fluxes of ecosystems, especially in low N-availability desert ecosystems. However, partitioning can differ among species even when growing in the same habitat. To better understand the variation of plant biomass allocation and N retention within ephemeral and annual species we studied the responses of Malcolmia Africana (an ephemeral) and Salsola affinis (an annual) to N addition, including plant growth, N retention by the plant and soil, and N lost to the environment using 15 N (double-labeled 15 NH 4 15 NO 3 (5.16% abundance) added at 0, 0.8, 1.6, 3.2, and 6.4 g pot -1 , equivalent to 0, 15, 30, 60, and 120 kg N ha -1 ) in a pot experiment. Higher N addition (N120) inhibited plant growth and biomass accumulation of the ephemeral but not the annual. In addition, the aboveground:belowground partitioning of N (the R:S ratio) of the ephemeral decreased with increasing N addition, but that of the annual increased. The N input corresponding to maximum biomass and 15 N retention of the ephemeral was significantly less than that of the annual. The aboveground and belowground retention of N in the ephemeral were significantly less than those of the annual, except at low N rates. The average plant–soil system recovery of added 15 N by the ephemeral was 70%, significantly higher than that of the annual with an average of 50%. Although the whole plant–soil 15 N recovery of this desert ecosystem decreased with increasing N deposition, our results suggested that it may vary with species composition and community change under future climate and elevated N deposition.

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Combined effects of snow depth and nitrogen addition on ephemeral growth at the southern edge of the Gurbantunggut Desert, China

Cited by 31 publications

References 42 publications

Ecological biomass allocation strategies in plant species with different life forms in a cold desert, China

Ecological biomass allocation strategies in plant species with different life forms in a cold desert, China

The Effect of Irrigation on the Annual Apical Growth of the 12–14 Years Old Seed Plants of Black Saksaul

The Growth and N Retention of Two Annual Desert Plants Varied Under Different Nitrogen Deposition Rates

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