scholarly journals Testing relationship between plant productivity and diversity in a desertified steppe in Northwest China

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7239
Author(s):  
Yang Yang ◽  
Bingru Liu
Keyword(s):  
Microbial Biomass ◽  
Plant Diversity ◽  
Soil Microbial Biomass ◽  
Plant Productivity ◽  
Northwestern China ◽  
Soil Factors ◽  
Soil Microbial ◽  
Ground Biomass ◽  
The Relationship ◽  
Desertified Steppe

The rapid global plant diversity and productivity loss has resulted in ecosystem functional degeneration in recent decades, and the relationship between plant diversity and productivity is a pressing issue around the world. Here, we sampled six plant communities that have not been grazed for 20 years, i.e., Agropyron mongolicum, Stipa bungeana, Cynanchum komarovii, Glycyrrhiza uralensis, Sophora alopecuroides, Artemisia ordosica, located in a desertified steppe, northwestern China, and tested the relationship between plant diversity and productivity in this region. We found a positive linear relationship between AGB (above-ground biomass) and BGB (below-ground biomass), and the curves between plant diversity and AGB were unimodal (R2 = 0.4572, p < 0.05), indicating that plant productivity increased at a low level of diversity but decreased at a high level of diversity. However, there was no significant relationship between BGB and plant diversity (p > 0.05). Further, RDA (redundancy analysis) indicated that soil factors had a strong effect on plant diversity and productivity. Totally, GAMs (generalized additive models) showed that soil factors (especially total nitrogen TN, total carbon TC, soil microbial biomass nitrogen SMB-N, soil microbial biomass carbon SMB-C) explained more variation in plant diversity and productivity (78.24%), which can be regarded as the key factors driving plant diversity and productivity. Therefore, strategies aiming to increase plant productivity and protect plant diversity may concentrate on promoting soil factors (e.g., increasing TC, TN, SMB-N and SMB-C) and plant species, which can be regarded as an effective and simple strategy to stabilize ecosystems to mitigate aridity in desertified steppes in northwestern China.

No interactive effects of pesticides and plant diversity on soil microbial biomass and respiration

2009 ◽  
Vol 42 (1) ◽  
pp. 31-36 ◽  
Author(s):  
Nico Eisenhauer ◽  
Matthias Klier ◽  
Stephan Partsch ◽  
Alexander C.W. Sabais ◽  
Christoph Scherber ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Plant Diversity ◽  
Soil Microbial Biomass ◽  
Interactive Effects ◽  
Soil Microbial

SHORT COMMUNICATION: Estimation of microbial biomass by ninhydrin-reactive N using liquid chloroform

1996 ◽  
Vol 76 (1) ◽  
pp. 37-40 ◽  
Author(s):  
P. M. Mele ◽  
M. R. Carter
Keyword(s):  
Microbial Biomass ◽  
Extraction Method ◽  
Soil Microbial Biomass ◽  
Short Communication ◽  
Extraction Methods ◽  
Promising Technique ◽  
Soil Microbial ◽  
Reactive N ◽  
The Relationship ◽  
Fumigation Extraction

Ninhydrin-reactive N (NRN), which is a reliable and sensitive indicator of soil microbial biomass, was measured in extracts of three Australian duplex soils, under different tillage systems, fumigated using either vaporized or liquid CHCl3. Although the relationship between the two fumigation-extraction methods was influenced by soil type, the use of liquid CHCl3 appears to be a promising technique to allow greater ease and speed for releasing NRN in microbial biomass analysis. Key words: Duplex soils, tillage, microbial biomass, fumigation-extraction method

scholarly journals Plant mixture balances terrestrial ecosystem C:N:P stoichiometry

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xinli Chen ◽  
Han Y. H. Chen
Keyword(s):  
Microbial Biomass ◽  
Plant Diversity ◽  
Soil Microbial Biomass ◽  
Meta Analysis ◽  
Terrestrial Ecosystem ◽  
Terrestrial Ecosystems ◽  
C:N:P Stoichiometry ◽  
Soil Microbial ◽  
Species Mixture ◽  
Background Soil

AbstractPlant and soil C:N:P ratios are of critical importance to productivity, food-web dynamics, and nutrient cycling in terrestrial ecosystems worldwide. Plant diversity continues to decline globally; however, its influence on terrestrial C:N:P ratios remains uncertain. By conducting a global meta-analysis of 2049 paired observations in plant species mixtures and monocultures from 169 sites, we show that, on average across all observations, the C:N:P ratios of plants, soils, soil microbial biomass and enzymes did not respond to species mixture nor to the species richness in mixtures. However, the mixture effect on soil microbial biomass C:N changed from positive to negative, and those on soil enzyme C:N and C:P shifted from negative to positive with increasing functional diversity in mixtures. Importantly, species mixture increased the C:N, C:P, N:P ratios of plants and soils when background soil C:N, C:P, and N:P were low, but decreased them when the respective background ratios were high. Our results demonstrate that plant mixtures can balance terrestrial plant and soil C:N:P ratios dependent on background soil C:N:P. Our findings highlight that plant diversity conservation does not only increase plant productivity, but also optimizes ecosystem stoichiometry for the diversity and productivity of today’s and future vegetation.

Transgressive overyielding of soil microbial biomass in a grassland plant diversity gradient

2013 ◽  
Vol 60 ◽  
pp. 122-124 ◽  
Author(s):  
Yasemin Guenay ◽  
Anne Ebeling ◽  
Katja Steinauer ◽  
Wolfgang W. Weisser ◽  
Nico Eisenhauer
Keyword(s):  
Microbial Biomass ◽  
Plant Diversity ◽  
Soil Microbial Biomass ◽  
Soil Microbial ◽  
Diversity Gradient

scholarly journals Plant diversity drives soil microbial biomass carbon in grasslands irrespective of global environmental change factors

2015 ◽  
Vol 21 (11) ◽  
pp. 4076-4085 ◽  
Author(s):  
Madhav Prakash Thakur ◽  
Alexandru Milcu ◽  
Pete Manning ◽  
Pascal A. Niklaus ◽  
Christiane Roscher ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Environmental Change ◽  
Plant Diversity ◽  
Soil Microbial Biomass ◽  
Microbial Biomass Carbon ◽  
Global Environmental Change ◽  
Biomass Carbon ◽  
Soil Microbial ◽  
Change Factors ◽  
Global Environmental
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