Temporal and spatial succession and dynamics of soil fungal communities in restored grassland on the Loess Plateau in China

2019 ◽  
Vol 30 (11) ◽  
pp. 1273-1287 ◽  
Author(s):  
Yang Liu ◽  
Xiaotian Chen ◽  
Jiaxi Liu ◽  
Tingting Liu ◽  
Jimin Cheng ◽  
...  
Ecosphere ◽  
2018 ◽  
Vol 9 (8) ◽  
pp. e02401 ◽  
Author(s):  
Peng Dang ◽  
Ngoc Ha Vu ◽  
Zhen Shen ◽  
Jinliang Liu ◽  
Fei Zhao ◽  
...  

CATENA ◽  
2019 ◽  
Vol 183 ◽  
pp. 104220 ◽  
Author(s):  
Quanchao Zeng ◽  
Peilong Jia ◽  
Ying Wang ◽  
Honglei Wang ◽  
Chengcheng Li ◽  
...  

2014 ◽  
Vol 19 (4) ◽  
pp. 395-403 ◽  
Author(s):  
Jian Zhang ◽  
Takeshi Taniguchi ◽  
Ming Xu ◽  
Sheng Du ◽  
Guo-Bin Liu ◽  
...  

Water ◽  
2022 ◽  
Vol 14 (2) ◽  
pp. 257
Author(s):  
Peng Guo ◽  
Jiqiang Lyu ◽  
Weining Yuan ◽  
Xiawan Zhou ◽  
Shuhong Mo ◽  
...  

This study examined the Chabagou River watershed in the gully region of the Loess Plateau in China’s Shaanxi Province, and was based on measured precipitation and runoff data in the basin over a 52-year period (1959–2010), land-use types, normalized difference vegetation index (NDVI), and other data. Statistical models and distributed hydrological models were used to explore the influences of climate change and human activity on the hydrological response and on the temporal and spatial evolution of the basin. It was found that precipitation and runoff in the gully region presented a downward trend during the 52-year period. Since the 1970s, the hydrological response to human activities has become the main source of regional hydrological evolution. Evapotranspiration from the large silt dam in the study area has increased. The depth of soil water decreased at first, then it increased by amount that exceeded the evaporation increase observed in the second and third change periods. The water and soil conservation measures had a beneficial effect on the ecology of the watershed. These results provide a reference for water resource management and soil and water conservation in the study area.


2021 ◽  
Author(s):  
Huan Huang ◽  
Rui Wang ◽  
Jue Wang ◽  
Jixing Chai

Abstract In the Loess Plateau, natural resources are scarce and the ecological environment is fragile. Sustainable development requires special attention paid to resource and environmental carrying capacity (RECC). This paper selects 24 representative cities in five natural areas of the Loess Plateau, uses the entropy-weight-based TOPSIS method to evaluate and analyze the RECC of each city and region from 2013 to 2018, establishes a diagnosis model to identify the obstacle factors restricting the improvement of RECC and constructs the theoretical framework of RECC' system mechanism. Results show that the RECC of Loess Plateau is increasing in general but relatively small. The environmental and social subsystem have the highest and lowest carrying capacity respectively. There is an obvious contradiction between economic development and the environment. Population density, investment in technological innovation, per capita sown area of crops, and per capita water resources are the main obstacles affecting the improvement of RECC in the Loess Plateau. Such evaluation and diagnosis could support ecological civilization and sustainable development.


2010 ◽  
Vol 31 (7) ◽  
pp. 1943-1958 ◽  
Author(s):  
Tianming Wang ◽  
Xiaojun Kou ◽  
Youcai Xiong ◽  
Pu Mou ◽  
Jianguo Wu ◽  
...  

Forests ◽  
2019 ◽  
Vol 10 (10) ◽  
pp. 930 ◽  
Author(s):  
Fei He ◽  
Hui Chen ◽  
Ming Tang

Arbuscular mycorrhizal (AM) fungi can establish mutualistic symbioses with most terrestrial plants and therefore play a crucial role in the re-vegetation and rehabilitation of degraded ecosystems. Yet, little information is available on AM fungal communities associated with dominant tree species in the semi-arid region of the Loess Plateau, Northwest China. In this study, topsoil (0–20 cm) and subsoil (20–40 cm) samples were collected from the rhizosphere of five dominant tree species in northern Shaanxi Province, to investigate the distribution and diversity of their associated AM fungi. The tree species were Hippophae rhamnoides Linn., Juniperus communis L., Populus cathayana Rehd., Robinia pseudoacacia L., and Salix matsudana Koidz. In total, 24 AM fungal species of eight genera were isolated from the rhizosphere soil samples and identified based on their spore morphology. Funneliformis and Funneliformis monosporum were respectively the most abundant genus and species of AM fungi. The distribution and diversity of AM fungi differed among the five tree species and also between the two soil depths. Across different tree species, the spore density of AM fungi varied from 2.85 to 15.32 spores g−1 fresh soil, with a species richness of 3–7, Shannon–Wiener index of 0.81–1.08, and evenness index of 0.30–0.53. The mycorrhizal colonization rate had a significant negative correlation with both the Shannon-Wiener index and species richness, whereas it was positively correlated with the evenness index. Permutational multivariate analysis of variance, non-metric multidimensional scaling, and structural equation modeling revealed that tree species, rather than soil depth or its interactions with tree species, had significant effects on the composition of AM fungal communities. In conclusion, the distribution and diversity of AM fungi associated with the dominant tree species were mainly affected by host tree species identity in the semi-arid ecosystem. Claroideoglomus etunicatum (W.N. Becker & Gerdemann) C. Walker & A. Schüßler and Glomus reticulatum Bhattacharjee & Mukerji appeared to be promising candidates for ecological restoration in the Loess Plateau region because of their adaptation to its semi-arid conditions with a broad spectrum of host tree species.


2019 ◽  
Vol 118 ◽  
pp. 01009
Author(s):  
Qiguang Dong ◽  
Jichang Han ◽  
Na Lei ◽  
Jing He ◽  
Zenghui Sun ◽  
...  

The temporal and spatial variation characteristics of soil moisture in typical slope and gully of Jiulongquangou small watershed were studied in the hilly and gully region of the Loess Plateau of China. The variation of soil moisture in the 0-30 cm layer on the surface of the hilly and gully region of the Loess Plateau is greater than the variation of soil moisture in each layer between 40 and 100 cm. In the study area, the model parameters such as coefficient of variation (Cv), nugget (C0), sill (C0+C), spatial degrees of freedom(C0/(C+C0)) and variable change can be used to quantitative analysis the spatial varying law. On the slope surface, the average soil water content and the coefficient of variation are negatively correlated, and can be approximated by an exponential function, while the two are positively correlated in the gully.


Pedobiologia ◽  
2020 ◽  
Vol 81-82 ◽  
pp. 150668
Author(s):  
Quanchao Zeng ◽  
Yang Liu ◽  
Li Xiao ◽  
Shaoshan An

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