Vegetation succession prevents dry lake beds from becoming dust sources in the semi-arid steppe region of China

2010 ◽  
Vol 36 (7) ◽  
pp. 864-871 ◽  
Author(s):  
Fengjun Zhao ◽  
Hongyan Liu ◽  
Yi Yin ◽  
Guozheng Hu ◽  
Xiuchen Wu
Keyword(s):  
Vegetation Succession ◽  
Steppe Region ◽  
Dust Sources ◽  
Dry Lake ◽  
Arid Steppe ◽  
Semi Arid ◽  
Lake Beds

scholarly journals Study on the Construction of Landscape Ecological Classification System for Large-Scale Coal-Power Base in Semi-Arid Steppe Region

2018 ◽  
Author(s):  
Zhenhua Wu ◽  
Shaogang Lei ◽  
Zhengfu Bian
Keyword(s):  
Landscape Ecology ◽  
Large Scale ◽  
Ecological Classification ◽  
Steppe Region ◽  
Power Base ◽  
Arid Steppe ◽  
Coal Power ◽  
And Function ◽  
Landscape Ecological ◽  
Semi Arid

The ecological background condition of the semi-arid steppe region (SASR) is extremely fragile. It is recognized that the development of coal and electricity power is a kind of strong human interference behavior for regional landscape ecology. Landscape ecological classification (LEC) is the premise of landscape ecology research of the mining area. The current research on the SASR and grassland LEC of coal-power base is relatively less, but still remains uncertainty concerning how to stratify and classify urban mining landscapes into units of ecological significance at spatial scales appropriate for management. This study is based on hierarchy theory, scale theory, landscape process, the patch-corridor-matrix model, the network, the theory of multiple planning integration and the principle of remote sensing. According to the comprehensive principle, principles of the combining of structure and function, principle of the combining human-ominated and natural landscape, principle of emphasis, and principle of combining qualitative analysis with quantitative research of LEC in large-scale coal-power base(LSCPB). On the basis of occurrence method land classification, fully consider the ecological attributes of the land, integration pattern, processes and function theory of the landscape ecology, the LEC system of the LSCPB in the SASR has been constructed by using top-down decomposition classification method. Empirical research of the Victory and Mindong No.1 mining areas of Shenhua Group shows that the classification system constructed in this paper can meet the requirements of LEC and fully reflect the status of landscape ecology of LSCPB in SASR. This study can provide theoretical guidance for the landscape ecology of LSCPB, while also supporting a theoretical reference for the LEC research.

scholarly journals Is shrub-encroached grassland a stable state in the semi-arid steppe region?

2020 ◽  
Author(s):  
Guang Hao ◽  
Nan Yang ◽  
Ke Dong ◽  
YuJuan Xu ◽  
Xinfeng Ding ◽  
...  
Keyword(s):  
Stable State ◽  
Steppe Region ◽  
Arid Steppe ◽  
Semi Arid

Study of the desertification index based on the albedo-MSAVI feature space for semi-arid steppe region

2019 ◽  
Vol 78 (6) ◽  
Author(s):  
Zhenhua Wu ◽  
Shaogang Lei ◽  
Zhengfu Bian ◽  
Jiu Huang ◽  
Yong Zhang
Keyword(s):  
Feature Space ◽  
Steppe Region ◽  
Arid Steppe ◽  
Semi Arid

Microbial activity in wetland soils of dry lake in semi-arid steppe

2011 ◽  
Author(s):  
Xiao-tong Wu ◽  
Yutao Bai ◽  
Qiwei Ren ◽  
Yu Bian ◽  
Qiming Guo ◽  
...  
Keyword(s):  
Microbial Activity ◽  
Wetland Soils ◽  
Dry Lake ◽  
Arid Steppe ◽  
Semi Arid

Effects of defoliation timing on plant nutrient resorption and hay production in a semi-arid steppe

2020 ◽  
Author(s):  
Tongrui Zhang ◽  
Frank Yonghong Li ◽  
Hao Wang ◽  
Lin Wu ◽  
Chunjun Shi ◽  
...  
Keyword(s):  
Nutrient Cycling ◽  
Nutrient Resorption ◽  
Plant Production ◽  
Conservation Strategy ◽  
Plant Nutrient ◽  
Resorption Efficiency ◽  
Nutrient Return ◽  
Peak Biomass ◽  
Arid Steppe ◽  
Semi Arid

Abstract Aims Nutrient resorption is a key plant nutrient conservation strategy, and its response to environmental and management changes is linked to nutrient cycling and production of ecosystems. Defoliation is a major pathway of mowing affecting plant nutrient resorption and production in grasslands, while the effect of defoliation timing has not been unexplored. The aim of this study was to examine the effect of defoliation timing on plant nutrient resorption and production in a steppe ecosystem. Methods We conducted a field experiment in a semi-arid steppe of Inner Mongolia including four treatments: early defoliation, peak defoliation, late defoliation and non-defoliation. We measured plant nitrogen (N) and phosphorus (P) resorption at species and community levels, and quantified plant N and P fluxes in resorption, litter return and hay output. Plant production in the mowing system was assessed by hay production and quality. Important Findings Peak and late defoliation, but not early defoliation, reduced plant community N and P resorption proficiency (RP); and late defoliation reduced N resorption efficiency (RE) but not P resorption efficiency. Peak and late defoliation, but not early defoliation, reduced plant nutrient resorption flux and litter nutrient return flux. Defoliation timing did not alter root nutrient accumulation as nutrient uptake from soil likely compensated the deficit of nutrient resorption. Peak defoliation had the highest hay production and quality, while early defoliation had the lowest. Our results provide new insights into the nutrient cycling in mowing grassland, and imply that the mowing timing can be used as a tool to mediate the balance between conservation and production of steppes, and the early mowing before plant peak biomass period is recommended for conservation of the steppes while keeping sustainable pastoral production.

Seasonal patterns of the abundance of ground-dwelling arthropod guilds and their responses to livestock grazing in a semi-arid steppe

Pedobiologia ◽  
2021 ◽  
Vol 85-86 ◽  
pp. 150711
Author(s):  
Jianwei Cheng ◽  
Frank Yonghong Li ◽  
Xinmin Liu ◽  
Xinyu Wang ◽  
Dong Zhao ◽  
...  
Keyword(s):  
Livestock Grazing ◽  
Seasonal Patterns ◽  
Arid Steppe ◽  
Semi Arid

Controls of surface soil moisture spatial patterns and their temporal stability in a semi-arid steppe

2010 ◽  
Vol 24 (18) ◽  
pp. 2507-2519 ◽  
Author(s):  
Y. Zhao ◽  
S. Peth ◽  
X. Y. Wang ◽  
H. Lin ◽  
R. Horn
Keyword(s):  
Soil Moisture ◽  
Spatial Patterns ◽  
Surface Soil ◽  
Temporal Stability ◽  
Surface Soil Moisture ◽  
Arid Steppe ◽  
Semi Arid

Infiltration, penetration resistance and microphytic crust composition in contrasted microsites within a Mediterranean semi-arid steppe

2002 ◽  
Vol 34 (6) ◽  
pp. 895-898 ◽  
Author(s):  
Fernando T Maestre ◽  
Mayte Huesca ◽  
Eli Zaady ◽  
Susana Bautista ◽  
Jordi Cortina
Keyword(s):  
Penetration Resistance ◽  
Arid Steppe ◽  
Microphytic Crust ◽  
Semi Arid
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