scholarly journals Nitrogen-controlled intra- and interspecific competition between Populus purdomii and Salix rehderiana drive primary succession in the Gongga Mountain glacier retreat area

2017 ◽  
Vol 37 (6) ◽  
pp. 799-814 ◽  
Author(s):  
Mengya Song ◽  
Lei Yu ◽  
Yonglei Jiang ◽  
Yanbao Lei ◽  
Helena Korpelainen ◽  
...  
Keyword(s):  
Interspecific Competition ◽  
Primary Succession ◽  
Glacier Retreat ◽  
Mountain Glacier ◽  
Gongga Mountain

scholarly journals Effects of phosphorus availability on later stages of primary succession in Gongga Mountain glacier retreat area

2017 ◽  
Vol 141 ◽  
pp. 103-112 ◽  
Author(s):  
Lei Yu ◽  
Mengya Song ◽  
Yanbao Lei ◽  
Baoli Duan ◽  
Frank Berninger ◽  
...  
Keyword(s):  
Primary Succession ◽  
Phosphorus Availability ◽  
Glacier Retreat ◽  
Mountain Glacier ◽  
Gongga Mountain

scholarly journals Temporal-Spatial Variation and Controls of Soil Respiration in Different Primary Succession Stages on Glacier Forehead in Gongga Mountain, China

PLoS ONE ◽  
2012 ◽  
Vol 7 (8) ◽  
pp. e42354 ◽  
Author(s):  
Ji Luo ◽  
Youchao Chen ◽  
Yanhong Wu ◽  
Peili Shi ◽  
Jia She ◽  
...  
Keyword(s):  
Soil Respiration ◽  
Spatial Variation ◽  
Primary Succession ◽  
Gongga Mountain

Changes of soil phosphorus speciation along a 120-year soil chronosequence in the Hailuogou Glacier retreat area (Gongga Mountain, SW China)

Geoderma ◽  
2013 ◽  
Vol 195-196 ◽  
pp. 251-259 ◽  
Author(s):  
Jun Zhou ◽  
Yanhong Wu ◽  
Jörg Prietzel ◽  
Haijian Bing ◽  
Dong Yu ◽  
...  
Keyword(s):  
Soil Phosphorus ◽  
Glacier Retreat ◽  
Phosphorus Speciation ◽  
Sw China ◽  
Soil Chronosequence ◽  
Gongga Mountain

scholarly journals Plant and Soil Development Cooperatively Shaped the Composition of the phoD-Harboring Bacterial Community along the Primary Succession in the Hailuogou Glacier Chronosequence

mSystems ◽  
2020 ◽  
Vol 5 (4) ◽  
Author(s):  
Yan Bai ◽  
Quanju Xiang ◽  
Ke Zhao ◽  
Xiumei Yu ◽  
Qiang Chen ◽  
...  
Keyword(s):  
Plant Development ◽  
Primary Succession ◽  
Soil Development ◽  
Bulk Soil ◽  
Environmental Drivers ◽  
Pioneer Species ◽  
Related Factors ◽  
Mountain Glacier ◽  
Content Type ◽  
Model Plant

ABSTRACT Microbes that produce phosphatases play an important role in the cycling of phosphorus (P), a key nutrient in soil development. We studied the development, compositional turnover, and environmental drivers of microbial communities carrying the phosphatase-encoding phoD gene (here called phoD communities) in the course of primary succession in the Hailuogou glacier chronosequence. We selected the pioneer species Populus purdomii Rehder as a model plant to study the communities in rhizosphere and bulk soils along the chronosequence. The bulk and rhizosphere soils hosted distinct phoD communities. Changes in the taxa Pseudomonas and Pleomorphomonas in the rhizosphere and Bradyrhizobium, Cupriavidus, and Pleomorphomonas in the bulk soil were associated with soil development. The plant development and soil property changes along the chronosequence were accompanied with changes in the phoD communities. Soil pH, soil organic carbon, and total nitrogen contents that are directly related to the plant development and litter input differences along the chronosequence were the main factors related to changes in community compositions. The community similarity decreased along the chronosequence, and the distance decay rate was higher in the bulk soil than in the rhizosphere. In summary, both in the rhizosphere and in bulk soils the phoD community succession was shaped by plant and soil development-related factors along the primary succession in the Hailuogou glacier chronosequence. IMPORTANCE Phosphorus was the key limiting nutrient for soil development during primary succession that occurred in alpine and high-latitude ecosystems with cold and humid climates. The interactions of functional microbiota involved in phosphorus cycling in the rhizosphere under different soil developmental stages along primary succession are still rarely examined. We selected the pioneer species Populus purdomii as a model plant to study the phoD-harboring bacterial communities in rhizosphere and bulk soils along a mountain glacier chronosequence. Our results showed that the bulk soils and rhizosphere host distinct phoD communities and diversity that differentially varied along the chronosequence, describing in detail the development and compositional turnover of the phoD community in the course of primary succession and determining the main environmental factors driving the development.

scholarly journals Dynamics of nitrogen and phosphorus accumulation and their stoichiometry along a chronosequence of forest primary succession in the Hailuogou Glacier retreat area, eastern Tibetan Plateau

PLoS ONE ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. e0246433
Author(s):  
Danli Yang ◽  
Ji Luo ◽  
Peihao Peng ◽  
Wei Li ◽  
Wenbo Shi ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Primary Succession ◽  
N:P Ratio ◽  
Organic Soil ◽  
Glacier Retreat ◽  
The Tibetan Plateau ◽  
Soil N ◽  
Nitrogen And Phosphorus ◽  
P Pools ◽  
P Accumulation

As the two limiting nutrients for plants in most terrestrial ecosystems, nitrogen (N) and phosphorus (P) are essential for the development of succession forests. Vegetation N:P stoichiometry is a useful tool for detecting nutrient limitation. In the present work, chronosequence analysis was employed to research N and P accumulation dynamics and their stoichiometry during forest primary succession in a glacier retreat area on the Tibetan Plateau. Our results showed that: (1) total ecosystem N and P pools increased from 97 kg hm−2 to 7186 kg hm−2 and 25 kg hm−2 to 487 kg hm−2, respectively, with increasing glacier retreat year; (2) the proportion of the organic soil N pool to total ecosystem N sharply increased with increasing glacier retreat year, but the proportion of the organic soil and the vegetation P pools to the total ecosystem P was equivalent after 125 y of recession; (3) the N:P ratio for tree leaves ranged from 10.1 to 14.3, whereas the N:P ratio for total vegetation decreased form 13.3 to 8.4 and remained constant after 35 y of recession, and the N:P ratio for organic soil increased from 0.2 to 23.1 with increasing glacier retreat. These results suggested that organic soil N increased with increasing years of glacier retreat, which may be the main sink for atmospheric N, whereas increased P accumulation in vegetation after 125 y of recession suggested that much of the soil P was transformed into the biomass P pool. As the N:P ratio for vegetation maintained a low level for 35–125 y of recession, we suggested that N might be the main limiting element for plant growth in the development of this ecosystem.

scholarly journals Evidence for a non-linear carbon accumulation pattern along an Alpine glacier retreat chronosequence in Northern Italy

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7703 ◽  
Author(s):  
Leonardo Montagnani ◽  
Aysan Badraghi ◽  
Andrew Francis Speak ◽  
Camilla Wellstein ◽  
Luigimaria Borruso ◽  
...  
Keyword(s):  
Primary Succession ◽  
Ecosystem Respiration ◽  
Carbon Accumulation ◽  
Glacier Retreat ◽  
High Mountain ◽  
Total Biomass ◽  
Successional Stage ◽  
Accumulation Pattern ◽  
Glacier Forefield ◽  
Biomass Components

Background The glaciers in the Alps, as in other high mountain ranges and boreal zones, are generally retreating and leaving a wide surface of bare ground free from ice cover. This early stage soil is then colonized by microbes and vegetation in a process of primary succession. It is rarely experimentally examined whether this colonization process is linear or not at the ecosystem scale. Thus, to improve our understanding of the variables involved in the carbon accumulation in the different stages of primary succession, we conducted this research in three transects on the Matsch glacier forefield (Alps, N Italy) at an altitude between 2,350 and 2,800 m a.s.l. Methods In three field campaigns (July, August and September 2014) a closed transparent chamber was used to quantify the net ecosystem exchange (NEE) between the natural vegetation and the atmosphere. On the five plots established in each of the three transects, shading nets were used to determine ecosystem response function to variable light conditions. Ecosystem respiration (Reco) and gross ecosystem exchange (GEE) was partitioned from NEE. Following the final flux measurements, biometric sampling was conducted to establish soil carbon (C) and nitrogen (N) content and the biomass components for each transect. Results A clear difference was found between the earlier and the later successional stage. The older successional stages in the lower altitudes acted as a stronger C sink, where NEE, GEE and Reco were significantly higher than in the earlier successional stage. Of the two lower transects, the sink capacity of intermediate-succession plots exceeded that of the plots of older formation, in spite of the more developed soil. Total biomass (above- and belowground) approached its maximum value in the intermediate ecosystem, whilst the later stage of succession predominated in the corresponding belowground organic mass (biomass, N and C). Outlook We found that the process of carbon accumulation along a glacier retreat chronosequence is not linear, and after a quite rapid increase in carbon accumulation capacity in the first 150 years, in average 9 g C m−2 year−1, it slows down, taking place mainly in the belowground biomass components. Concurrently, the photosynthetic capacity peaks in the intermediate stage of ecosystem development. If confirmed by further studies on a larger scale, this study would provide evidence for a predominant effect of plant physiology over soil physical characteristics in the green-up phase after glacier retreat, which has to be taken into account in the creation of scenarios related to climate change and future land use.

scholarly journals Evidence for a non-linear carbon accumulation pattern along an Alpine glacier retreat chronosequence in Northern Italy

2019 ◽  
Author(s):  
Leonardo Montagnani ◽  
Aysan Badraghi ◽  
Andrew Francis Speak ◽  
Camilla Wellstein ◽  
Luigimaria Borruso ◽  
...  
Keyword(s):  
Primary Succession ◽  
Ecosystem Respiration ◽  
Carbon Accumulation ◽  
Glacier Retreat ◽  
High Mountain ◽  
Total Biomass ◽  
Successional Stage ◽  
Accumulation Pattern ◽  
Glacier Forefield ◽  
Biomass Components

Background. The glaciers in the Alps, as in other high mountain ranges and boreal zones, are generally retreating and leaving a wide surface of bare ground free from ice cover. This early stage soil is then colonized by microbes and vegetation in a process of primary succession. It is rarely experimentally examined whether this colonization process is linear or not at the ecosystem scale. Thus, to improve our understanding of the variables involved in the carbon accumulation in the different stages of primary succession, we conducted this research in three transects on the Matsch glacier forefield (Alps, N Italy) at an altitude between 2350 and 2800 m a.s.l. Methods. In three field campaigns (July, August and September 2014) a closed transparent chamber was used to quantify the net ecosystem exchange (NEE) between the natural vegetation and the atmosphere. On the five plots established in each of the three transects, shading nets were used to determine ecosystem response function to variable light conditions. Ecosystem respiration (Reco) and gross ecosystem exchange (GEE) was partitioned from NEE. Following the final flux measurements, biometric sampling was conducted to establish soil carbon (C) and nitrogen (N) content and the biomass components for each transect. Results. A clear difference was found between the earlier and the later successional stage. The older successional stages in the lower altitudes acted as a stronger C sink, where NEE, GEE, and Reco were significantly higher than in the earlier successional stage. Of the two lower transects, the sink capacity of intermediate-succession plots exceeded that of the plots of older formation, in spite of the more developed soil. Total biomass (above- and belowground) approached its maximum value in the intermediate ecosystem. Whilst, the later stage of succession predominated in the corresponding belowground organic mass (biomass, N and C). Outlook. We found that the process of carbon accumulation along a glacier retreat chronosequence is not linear, and after a quite rapid increase in carbon accumulation capacity in the first 150 years, in average 9 g C m-2 y-1, it slows down, taking place mainly in the belowground biomass components. Concurrently, the photosynthetic capacity peaks in the intermediate stage of ecosystem development. If confirmed by further studies on a larger scale, this study would provide evidence for a predominant effect of plant physiology over soil physical characteristics in the green-up phase after glacier retreat, which has to be taken into account in the creation of scenarios related to climate change and future land use.

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