Spatial Heterogeneity of Soil C:N Ratio in a Mollisol Watershed of Northeast China

2015 ◽  
Vol 27 (2) ◽  
pp. 295-304 ◽  
Author(s):  
Shaoliang Zhang ◽  
Lilong Yan ◽  
Jing Huang ◽  
Linlin Mu ◽  
Yiquan Huang ◽  
...  
Keyword(s):  
Spatial Heterogeneity ◽  
Northeast China ◽  
C:N Ratio

Spatial heterogeneity of soil nutrients in black soil areas of northeast China

2021 ◽  
Author(s):  
Zhidan Ba ◽  
Jingfa Wang ◽  
Chunwei Song ◽  
Huishi Du
Keyword(s):  
Spatial Heterogeneity ◽  
Soil Nutrients ◽  
Northeast China ◽  
Black Soil

Spatial heterogeneity of leaf area index of mixed spruce-fir-deciduous stands in northeast China

2015 ◽  
Vol 35 (1) ◽  
Author(s):  
姚丹丹 YAO Dandan ◽  
雷相东 LEI Xiangdong ◽  
余黎 YU Li ◽  
卢军 LU Jun ◽  
符利勇 FU Liyong ◽  
...  
Keyword(s):  
Spatial Heterogeneity ◽  
Leaf Area Index ◽  
Leaf Area ◽  
Northeast China ◽  
Area Index

Spatial heterogeneity of soil organic matter and soil total nitrogen in a Mollisol watershed of Northeast China

2014 ◽  
Vol 72 (1) ◽  
pp. 275-288 ◽  
Author(s):  
Shaoliang Zhang ◽  
Xingyi Zhang ◽  
Zhihua Liu ◽  
Yankun Sun ◽  
Wei Liu ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Spatial Heterogeneity ◽  
Total Nitrogen ◽  
Northeast China ◽  
Soil Total Nitrogen

Assessment of viral assemblages in different types of wetland water in northeast China using RAPD-PCR

2020 ◽  
Vol 85 ◽  
pp. 183-196
Author(s):  
Y Sun ◽  
J Liu ◽  
Q Yao ◽  
J Jin ◽  
X Liu ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Water Samples ◽  
Northeast China ◽  
Bacterial Community Composition ◽  
Freshwater Wetlands ◽  
Viral Community ◽  
Rapd Pcr ◽  
Wetland Water ◽  
Different Types ◽  
Viral Communities

Viruses are the most abundant and ubiquitous biological entities in various ecosystems, yet few investigations of viral communities in wetlands have been performed. To address this data gap, water samples from 6 wetlands were randomly collected across northeast China; viruses in the water were concentrated by sequential tangential flow filtration, and viral communities were assessed through randomly amplified polymorphic DNA-PCR (RAPD-PCR) with 4 decamer oligonucleotide primers. Principal coordinate analysis and hierarchical clustering analysis of the DNA fingerprints showed that viral community compositions differed among the water samples: communities in the 2 coastal wetlands were more similar to each other than to those in the 4 freshwater wetlands. The Shannon-Weaver index (H) and evenness index (E) of the RAPD-PCR fingerprint also differed among the 6 wetlands. Mantel test revealed that the changes in viral communities in wetland water were most closely related to the water NH4+-N and inorganic C content, followed by total K, P, C and NO3--N. DNA sequence analysis of the excised bands revealed that viruses accounted for ~40% of all sequences. Among the hit viral homologs, the majority belonged to the Microviridae. Moreover, variance partitioning analysis showed that the viral community contributed 24.58% while environmental factors explained 30.56% of the bacterial community variation, indicating that the bacterial community composition was strongly affected by both viral community and water variables. This work provides an initial outline of the viral communities from different types of wetlands in northeast China and improves our understanding of the viral diversity in these ecosystems.

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