Study on the adaptive scale of agricultural development and utilization in Mu Us Sandy Land based on NSGA-II

2017 ◽  
Author(s):  
Siyuan Liu ◽  
Ni Wang ◽  
Jiancang Xie ◽  
Rengui Jiang ◽  
Liu Yang
Keyword(s):  
Agricultural Development ◽  
Sandy Land ◽  
Nsga Ii ◽  
Mu Us Sandy Land ◽  
Development And Utilization

Surface roughness response of biocrust-covered soil to mimicked sheep trampling in the Mu Us sandy Land, northern China

Geoderma ◽  
2020 ◽  
Vol 363 ◽  
pp. 114146
Author(s):  
Yong-Sheng Wu ◽  
Xin-Rong Li ◽  
Hasi-Eerdun ◽  
Rui-Ping Yin ◽  
Tie-Jun Liu
Keyword(s):  
Surface Roughness ◽  
Northern China ◽  
Sandy Land ◽  
Mu Us Sandy Land

Amending aeolian sandy soil in the Mu Us Sandy Land of China with Pisha sandstone and increasing phosphorus supply were more effective than increasing water supply for improving plant growth and phosphorus and nitrogen nutrition of lucerne (Medicago sativa)

2020 ◽  
Vol 71 (8) ◽  
pp. 785
Author(s):  
Honghua He ◽  
Zekun Zhang ◽  
Rui Su ◽  
Zhigang Dong ◽  
Qing Zhen ◽  
...  
Keyword(s):  
Plant Growth ◽  
Water Supply ◽  
Medicago Sativa ◽  
Sandy Soil ◽  
Nitrogen Nutrition ◽  
Sandy Land ◽  
Retention Capacity ◽  
Mu Us Sandy Land ◽  
N Nutrition ◽  
P Supply

Plant growth is often constrained by low availability of water and phosphorus (P) in soils in arid and semi-arid areas. Aeolian sandy soils cover >90% of the sandy area of the Mu Us Sandy Land (MUSL) in Northwest China. These soils have low water- and nutrient-retention capacity, limiting their ability to support plant growth. Pisha sandstone, a type of loose rock widely distributed in the MUSL, is regarded as an environmental hazard because it easily weathers, resulting in severe soil erosion and water loss. However, the retention capacity of the aeolian sandy soil can be significantly improved through blending with Pisha sandstone. We investigated the impacts of water supply (35% and 70% of soil water-holding capacity) and P supply (0, 5 and 20 mg P kg–1 soil) on plant growth and P and nitrogen (N) nutrition by growing lucerne (Medicago sativa L.) in MUSL aeolian sandy soil amended or not with Pisha sandstone. Soil type and P supply had greater effects than water supply on lucerne growth and on P and N nutrition. Biomass accumulation and shoot P and N concentrations were increased by amending the aeolian sandy soil with Pisha sandstone and increasing P supply. The N:P ratios in shoots indicated that plant growth was limited by P but not by N. Aeolian sandy soil amended with Pisha sandstone and supplied with P at 5 mg kg–1 enhanced lucerne growth; this practice is feasible for pasture development in the MUSL.

scholarly journals Response of Fractal Analysis to Soil Quality Succession in Long-Term Compound Soil Improvement of Mu Us Sandy Land, China

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Haiou Zhang ◽  
Jiancang Xie ◽  
Jichang Han ◽  
Haipeng Nan ◽  
Zhen Guo
Keyword(s):  
Organic Matter ◽  
Sandy Soil ◽  
Sustainable Use ◽  
Organic Matter Content ◽  
Soft Rock ◽  
Clay Content ◽  
Matter Content ◽  
Practical Significance ◽  
Sandy Land ◽  
Mu Us Sandy Land

The degraded aeolian sandy soil in China’s Mu Us Sandy Land requires amendment before it can be suitable for maize or other agricultural production. The addition of material from the local “soft” bedrock can create a new compound soil whose particle composition and structural stability are key issues for sustainable soil development in the region. We used field data from 2010 to 2018 to study the variations in fractal characteristics of compound soil particles at soft rock to sand volume ratios of 1 : 1, 1 : 2, and 1 : 5, along with changes in soil organic matter. Over the study period, all three compound soils showed gradual increases in clay and silt content with corresponding decreasing sand content. The fractal dimension (FD) of particles at ratio 1 : 2 increased by 8.8%, higher than those at 1 : 1 (8.6%) and 1 : 5 (7.7%). The organic matter content (OMC) of particles at ratio 1 : 2 reached a maximum (6.24 ± 0.30 g/kg), an increase of 12 times over the original value. The FD and OMC of particles at ratios 1 : 1 and 1 : 5 were less stable but showed overall increase. The 1 : 2 ratio compound soil was most suitable for maize growth as its clear increase in silt and clay content most improved the texture and OMC of the original sandy soil. Such research has important theoretical and practical significance for understanding the evolutionary mechanism and sustainable use of the compound soil in agriculture within the Mu Us Sandy Land.

scholarly journals Non-Negligible Lag of Groundwater Infiltration Recharge: A Case in Mu Us Sandy Land, China

Water ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 561 ◽  
Author(s):  
Ze-Yuan Yang ◽  
Kai Wang ◽  
Yue Yuan ◽  
Jinting Huang ◽  
Zhi-Jun Chen ◽  
...  
Keyword(s):  
Groundwater Recharge ◽  
Heavy Rain ◽  
Observation Data ◽  
Sandy Land ◽  
Mu Us Sandy Land ◽  
Recharge Sources ◽  
Matrix Flow ◽  
Lag Times ◽  
Rain Events ◽  
Storm Rainfall

Groundwater is often the main source of available water, and precipitation is one of the main recharge sources of groundwater in arid and semi-arid regions. This paper studies a fixed dune in Mu Us Sandy Land in China, establishes a numerical model, acquires hydraulic parameters and heat parameters of the vadose zone, and calculates the recharge coefficient based on field observation data and numerical modelling. These measurement results show that the response depths of storm rain are more than 90 cm, while those of small rain events are less than 10 cm. The numerical results show that infiltration depths are 10 cm for small rain and more than 90 cm for middle rain respectively. The lag time of the water content at 90 cm below the surface was 25 h following a middle rain, 18–19 h following a heavy rain, and 16–18 h following a storm rainfall. Groundwater recharge lag times (matrix flow) varied from 11 h to 48 h. Excluded precipitation for groundwater recharge was 11.25–11.75 mm in 1 h when groundwater depth was 120 cm and 15–15.5 mm when 140 cm, showing significant influence in groundwater resource evaluation.

Sign in / Sign up

Export Citation Format

Share Document