scholarly journals Effects of Sand Burial on Survival, Growth, Gas Exchange and Biomass Allocation of Ulmus pumila Seedlings in the Hunshandak Sandland, China

2004 ◽  
Vol 94 (4) ◽  
pp. 553-560 ◽  
Author(s):  
L. SHI ◽  
Z. J. ZHANG ◽  
C. Y. ZHANG ◽  
J. Z. ZHANG
Keyword(s):  
Gas Exchange ◽  
Biomass Allocation ◽  
Ulmus Pumila ◽  
Sand Burial

scholarly journals Experimental sand burial affects seedling survivorship, morphological traits, and biomass allocation of <i>Ulmus pumila</i> var. <i>sabulosa</i> in the Horqin Sandy Land, China

Solid Earth ◽  
2016 ◽  
Vol 7 (4) ◽  
pp. 1085-1094 ◽  
Author(s):  
Jiao Tang ◽  
Carlos Alberto Busso ◽  
Deming Jiang ◽  
Ala Musa ◽  
Dafu Wu ◽  
...  
Keyword(s):  
Biomass Allocation ◽  
Morphological Traits ◽  
Seedling Emergence ◽  
Relative Mass ◽  
Seedling Height ◽  
Horqin Sandy Land ◽  
Sandy Land ◽  
Ulmus Pumila ◽  
Sand Burial ◽  
Seedling Survivorship

Abstract. As a native tree species, Ulmus pumila var. sabulosa (sandy elm) is widely distributed in the Horqin Sandy Land, China. However, seedlings of this species have to withstand various depths of sand burial after emergence because of increasing soil degradation, which is mainly caused by overgrazing, climate change, and wind erosion. An experiment was conducted to evaluate the changes in its survivorship, morphological traits, and biomass allocation when seedlings were buried at different burial depths: unburied controls and seedlings buried vertically up to 33, 67, 100, or 133 % of their initial mean seedling height. The results showed that partial sand burial treatments (i.e., less than 67 % burial) did not reduce seedling survivorship, which still reached 100 %. However, seedling mortality increased when sand burial was equal to or greater than 100 %. In comparison with the control treatment, seedling height and stem diameter increased at least by 6 and 14 % with partial burial, respectively. In the meantime, seedling taproot length, total biomass, and relative mass growth rates were at least enhanced by 10, 15.6, and 27.6 %, respectively, with the partial sand burial treatment. Furthermore, sand burial decreased total leaf area and changed biomass allocation in seedlings, partitioning more biomass to aboveground organs (e.g., leaves) and less to belowground parts (roots). Complete sand burial after seedling emergence inhibited its re-emergence and growth, even leading to death. Our findings indicated that seedlings of sandy elm showed some resistance to partial sand burial and were adapted to sandy environments from an evolutionary perspective. The negative effect of excessive sand burial after seedling emergence might help in understanding failures in recruitments of sparse elm in the study region.

scholarly journals Experimental sand burial affects seedling survivorship, morphological traits and biomass allocation of <i>Ulmus pumila var. sabulosa</i> in Horqin Sandy Land

2016 ◽  
Author(s):  
Jiao Tang ◽  
Carlos Alberto Busso ◽  
Deming Jiang ◽  
Ala Musa ◽  
Dafu Wu ◽  
...  
Keyword(s):  
Biomass Allocation ◽  
Morphological Traits ◽  
Seedling Emergence ◽  
Seedling Height ◽  
Horqin Sandy Land ◽  
Sandy Land ◽  
Seedling Mortality ◽  
Ulmus Pumila ◽  
Sand Burial ◽  
Seedling Survivorship

Abstract. As a native tree species, Ulmus pumila var. sabulosa (Sandy elm) is widely distributed in Horqin Sandy Land. However, seedlings of this species have to withstand various depths of sand burial after emergence because of increasing soil degradation. So an experiment was conducted to evaluate the changes in the survivorship, morphological traits and biomass allocation buried with different burial depths (unburied, and seedlings buried vertically up to 33, 67, 100 or 133 % of the initial mean seedling height). The results showed that partial sand burial treatments (i.e., less than 67 % burial) did not influence seedling survivorship, which still reached 100 %. However, seedling mortality increased as sand burial was equal to or greater than 100 %. Seedling height and stem diameter increased at least by 6 to 14 % with partial burial in comparison with control treatment. Whilst seeding taproot length, total biomass, and relative growth rates at least enhanced by 10 %, 15.6 %, and 27.6 %, respectively, with the partial sand burial treatment. Furthermore, sand burial decreased total leaf area and changed biomass allocation on seedlings, transferring more biomass to aboveground rather than belowground parts. Complete sand burial after seedling emergence inhibited its growth, and even lead to death. Our findings indicated that seedling of sandy elm had a certain resistance to partial sand burial and acclimated to sandy environments. The negative effects of common excessive sand burial after seedling emergence help to understand failures in recruitment of sparse elm woodland in the Horqin sandy land.

Effects of water stress on leaf gas exchange and biomass allocation of Populus×popularis ‘35-44’ cuttings

2020 ◽  
Vol 40 (5) ◽  
Author(s):  
赵瑜琦 ZHAO Yuqi ◽  
高苗琴 GAO Miaoqin ◽  
李涛 LI Tao ◽  
王卫锋 WANG Weifeng
Keyword(s):  
Water Stress ◽  
Gas Exchange ◽  
Biomass Allocation ◽  
Leaf Gas Exchange ◽  
Populus Popularis

Effect of soil drying on growth, biomass allocation and leaf gas exchange of two annual grass species

1996 ◽  
Vol 185 (1) ◽  
pp. 137-149 ◽  
Author(s):  
Tibor Kalapos ◽  
Riki van den Boogaard ◽  
Hans Lambers
Keyword(s):  
Gas Exchange ◽  
Biomass Allocation ◽  
Leaf Gas Exchange ◽  
Grass Species ◽  
Soil Drying ◽  
Annual Grass

Effects of Red to Far‐Red Ratio and Plant Density on Biomass Allocation and Gas Exchange in Impatiens capensis

1999 ◽  
Vol 160 (4) ◽  
pp. 723-733 ◽  
Author(s):  
Satya K. Maliakal ◽  
Kristin McDonnell ◽  
Susan A. Dudley ◽  
Johanna Schmitt
Keyword(s):  
Gas Exchange ◽  
Biomass Allocation ◽  
Plant Density ◽  
Impatiens Capensis

Effects of Sand Burial Depth on Seedling Growth of Caragana microphylla

2012 ◽  
Vol 610-613 ◽  
pp. 3495-3499 ◽  
Author(s):  
Yu Hui He ◽  
Xin Ping Liu ◽  
Ha Lin Zhao
Keyword(s):  
Seedling Growth ◽  
Biomass Allocation ◽  
Northern China ◽  
Burial Depth ◽  
Seedling Height ◽  
Sandy Land ◽  
Shrub Species ◽  
Sand Burial ◽  
Caragana Microphylla ◽  
Seedling Biomass

Caragana microphylla is a pioneer leguminous shrub species, and plays an important role in sand fixing and desertification control in the Horqin Sandy Land of Northern China. In this study, seedlings were buried by sand to depths of 0 (control), 1/3, 2/3, 1 and 4/3 of their mean height, and the effects of sand burial depth on seedling growth of Caragana microphylla were tested. Results show that with increasing burial depth, biomass allocation to leaves decrease, while stem biomass allocation increase, and both shoot and root growth of C. microphylla are stimulated and seedling biomass is the highest when burial depth is 2/3 of seedling height. Therefore, moderate burial could facilitate seedlings growth of C. microphylla

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