Spatial variability of soil physiochemical properties and their autocorrelations at village-region in karst mountainous area, Guizhou Province

2015 ◽  
Vol 35 (9) ◽  
Author(s):  
王小艳 WANG Xiaoyan ◽  
冯跃华 FENG Yuehua ◽  
李云 LI Yun ◽  
武彪 WU Biao ◽  
陈山 CHEN Shan ◽  
...  
2020 ◽  
Author(s):  
Li-bin Liu ◽  
Yan-nan Wu ◽  
Qiao-lian Zhong ◽  
Yin-ming Guo ◽  
Xin Xu ◽  
...  

Abstract Aims The relationships between plant species and soil microorganisms remain indeterminable in different ecosystems worldwide. In karst ecosystems, soil microbial (SM) community structure and their environmental driving factors are poorly explored, and the relationships between plant species and soil microorganisms are unclear. This study aimed to characterise the general patterns of SM community composition and biomass, and to explore the relationships between tree species and soil physiochemical properties, and between SM community diversity and biomass in a karst forest. Methods The effects of tree species on SM community composition and biomass were firstly investigated on the basis of 212 soil samples collected from five dominant tree species (Lithocarpus confinis Huang, Platycarya longipes Wu, Itea yunnanensis Franch., Machilus cavaleriei H. Lév. and Carpinus pubescens Burkill) through phospholipid fatty acid (PLFA) analysis of a karst evergreen and deciduous broad-leaved mixed forest in central Guizhou Province, Southwestern China. The relationships between SM community structure and tree species and soil physiochemical properties were statistically analysed. Important Findings A total of 132 SM-PLFA biomarkers were detected. The average number of SM-PLFA biomarkers and microbial biomass in each soil sample were 65.97 and 11.22 µg g −1, respectively. Tree species influenced the number of SM-PLFA biomarkers but not the SM biomass. The number of SM-PLFA biomarkers of C. pubescens was significantly higher than that of other species (p<0.05); the numbers of SM-PLFA biomarkers amongst other species showed no significant difference. Microbial biomass showed no relationships with the soil physiochemical properties of nutrient-rich surface soils but positively correlated (p<0.05) with soil organic carbon, nitrogen and phosphorus concentrations in deeper soils. The karst forest in the plateau-surface terrain of central Guizhou Province presented a low fungal-to-bacterial ratio, low microbial biomass storage and high microbial community diversity. Specific tree species affect the SM community diversity in this kind of karst forest.


2021 ◽  
Vol 13 (18) ◽  
pp. 10233
Author(s):  
Ruonan Fang ◽  
Juan Zhang ◽  
Kangning Xiong ◽  
Kyung-Sik Woo ◽  
Ning Zhang

Local residents of buffer zones, as a key factor in the World Heritage conservation and sustainable development, have not received sufficient attention in most developing countries, especially in the mountainous areas where poor and backward ethnic minorities live. To fill this research gap, this paper takes the Karst World Heritage buffer zone in Libo, Guizhou Province, southwest mountainous area of China, as the research area, and explores the factors that influence the perception of residents’ responsibility for the World Heritage conservation by taking local residents who are involved in tourism management as the research subjects. Data were collected in the buffer zone of the Libo World Heritage site and 186 valid data were generated. SPSS 25.0 and AMOS 27.0 software were used to analyze the questionnaire data and construct a structural equation model. The results showed that environmental protection behavior had the greatest impact on residents’ perception of responsibility for heritage conservation (0.93), followed by the recognition of heritage value (0.55), tourism positive impact (0.39), and place identification (0.34), among which the positive impact of tourism had a greater impact on the perception of heritage value (0.52). The results of the study emphasize the importance of the recognition of heritage value and positive tourism influence on the formation of residents’ perception of responsibility for heritage conservation, and provide an empirical basis for the conservation of the World Natural Heritage.


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