Changes in Understory Vegetation During the Reclamation of Saline-Alkali Soil by Drip Irrigation for Shelterbelt Establishment in the Hetao Irrigation Area of China

2021 ◽  
Author(s):  
Zhu Wendong ◽  
Kang Yaohu ◽  
Xiaobin Li ◽  
Shuqin Wan ◽  
Shide Dong
Keyword(s):  
Drip Irrigation ◽  
Understory Vegetation ◽  
Irrigation Area ◽  
Alkali Soil ◽  
Hetao Irrigation Area

scholarly journals Comprehensive Assessment of Water Quality and Pollution Source Apportionment in Wuliangsuhai Lake, Inner Mongolia, China

2020 ◽  
Vol 17 (14) ◽  
pp. 5054 ◽  
Author(s):  
Rui Shi ◽  
Jixin Zhao ◽  
Wei Shi ◽  
Shuai Song ◽  
Chenchen Wang
Keyword(s):  
Water Quality ◽  
Inner Mongolia ◽  
Principal Component ◽  
Middle Part ◽  
Quality Data ◽  
Quality Factors ◽  
Water Quality Data ◽  
Irrigation Area ◽  
Irrigation Period ◽  
Hetao Irrigation Area

Water quality is a key indicator of human health. Wuliangsuhai Lake plays an important role in maintaining the ecological balance of the region, protecting the local species diversity and maintaining agricultural development. However, it is also facing a greater risk of water quality deterioration. The 24 water quality factors that this study focused on were analyzed in water samples collected during the irrigation period and non-irrigation period from 19 different sites in Wuliangsuhai Lake, Inner Mongolia, China. Principal component analysis (PCA) and hierarchical cluster analysis (HCA) were conducted to evaluate complex water quality data and to explore the sources of pollution. The results showed that, during the irrigation period, sites in the middle part of the lake (clusters 1 and 3) had higher pollution levels due to receiving most of the agricultural and some industrial wastewater from the Hetao irrigation area. During the non-irrigation period, the distribution of the comprehensive pollution index was the opposite of that seen during the irrigation period, and the degree of pollutant index was reduced significantly. Thus, run-off from the Hetao irrigation area is likely to be the main source of pollution.

scholarly journals Simulation of Water and Salt Transport in Soil under Pipe Drainage and Drip Irrigation Conditions in Xinjiang

Water ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 2456 ◽  
Author(s):  
Kaiming Li ◽  
Hongguang Liu ◽  
Xinlin He ◽  
Xinxin Li
Keyword(s):  
Drip Irrigation ◽  
Salt Content ◽  
Soil Layer ◽  
Growth Period ◽  
Soil Salinization ◽  
Salt Transport ◽  
Model Parameters ◽  
Alkali Soil ◽  
Total Salt Content ◽  
Mulching Films

With the popularization and development of drip irrigation under film, the problem of secondary soil salinization in Xinjiang is becoming more and more serious. To explore water and salt transport in drip irrigation under mulch and drainpipe drainage, drainage tests of drainage ditches in saline-alkali soil in the Xinjiang 112 group were used to monitor soil salinity changes by controlling field irrigation. Then, a HYDRUS (PC-Progress, Prague, Czech Republic) numerical model was used to simulate and analyze the changes in salinity during cotton growth and the autumn salt return stage in saline-alkali soil under drainage conditions. The agreement between the simulated and measured values was high, and the model parameters were reliable. During the growth period of cotton, the salinity continued to decrease, and the salt began to return after the harvest. Compared with before planting, in the 0–80 cm soil layer, the average desalinization rate reached 43.52% under the mulching films, and the average desalinization rate reached 13.83% under and between the mulching films. After the cotton was harvested, salt returned to the upper layer of soil. However, it still showed a decrease compared with the level before sowing. The average salt content of 0–80 cm soil decreased by 5.14%, and the average salt content of 0–200 cm decreased by 2.60%. This shows that the total salt content in soil will continue to decrease after long-term use of drip irrigation and underground pipe drainage.

scholarly journals Seeds dormancy and germination behavior of three submerged macrophytes in the Hetao Irrigation area of the Inner Mongolia,China

2013 ◽  
Vol 25 (1) ◽  
pp. 115-118 ◽  
Author(s):  
WANG Xuan ◽  
◽  
LI Qingfeng ◽  
HU Yang ◽  
JIA Hongmei ◽  
...  
Keyword(s):  
Inner Mongolia ◽  
Submerged Macrophytes ◽  
Irrigation Area ◽  
Hetao Irrigation Area

scholarly journals Effects of combined drip irrigation and sub-surface pipe drainage on water and salt transport of saline-alkali soil in Xinjiang, China

2018 ◽  
Vol 10 (6) ◽  
pp. 932-945 ◽  
Author(s):  
Tong Heng ◽  
Renkuan Liao ◽  
Zhenhua Wang ◽  
Wenyong Wu ◽  
Wenhao Li ◽  
...  
Keyword(s):  
Drip Irrigation ◽  
Salt Transport ◽  
Alkali Soil

Study of the Distribution and Change Law of Stress in Subgrade Immersed in Water in the Hetao Irrigation Area

2021 ◽  
Vol 50 (1) ◽  
pp. 20190845
Author(s):  
Zuo Shen ◽  
Li Jin ◽  
Cui Xin-zhang ◽  
Yu Miao-zhang
Keyword(s):  
Irrigation Area ◽  
Hetao Irrigation Area

Development scenarios on Hetao irrigation area (China): a qualitative analysis from social, economic and ecological perspectives

2014 ◽  
Vol 73 (2) ◽  
pp. 815-834 ◽  
Author(s):  
Lilin Kerschbaumer ◽  
Jan Felix Köbbing ◽  
Konrad Ott ◽  
Stefan Zerbe ◽  
Niels Thevs
Keyword(s):  
Qualitative Analysis ◽  
Social Economic ◽  
Irrigation Area ◽  
Development Scenarios ◽  
Hetao Irrigation Area

A simulation study of erosion in the Emerald Irrigation Area

Soil Research ◽  
1999 ◽  
Vol 37 (3) ◽  
pp. 479 ◽  
Author(s):  
C. Carroll ◽  
R. D. Connolly ◽  
D. M. Freebairn ◽  
J. Francis ◽  
D. M. Silburn ◽  
...  
Keyword(s):  
Sediment Transport ◽  
Size Distribution ◽  
Drip Irrigation ◽  
Management Strategies ◽  
Clay Content ◽  
Original Design ◽  
Irrigation Area ◽  
Using Data ◽  
Set Up ◽  
And Storage

Sedimentation in the drainage network of the Emerald Irrigation Area (near Emerald, Queensland), as a result of erosion from irrigated farms, is a serious problem. Deposited sediment changes the hydraulic characteristics of the drains causing flooding and is difficult and expensive to remove. We used the GLEAMS erosion model to simulate a range of management strategies aimed at reducing sedimentation in the drains by reducing erosion at the bay/field scale or retaining eroded sediment on-farm. GLEAMS was set up and tested using data measured at the rainfall simulator (12 m2), furrow (0·2–0·3 ha), and bay (20–30 ha) scales. Comparisons of measured with predicted sediment transport indicated the model accurately reproduced effects of several management treatments on sediment transport and the size distribution of eroded sediment at the bay scale. To reproduce accurately size distribution of eroded sediment, though, an important parameter, clay content of surface soil, had to be substantially distorted from measured values. GLEAMS was used to simulate sediment transport from a typical farm producing irrigated cotton. Management strategies simulated included conventional (bare), stubble retained, cover in the tail-drain, drip irrigation, and addition of a silt-trap and storage. The most effective management strategies for reducing erosion and sediment transport at the bay scale were stubble retained and drip irrigation. Stubble retained+drip irrigation almost eliminated sediment transport. Addition of a silt-trap and storage with conventional management reduced sediment transport off-farm by 45%. Use of a silt-trap with improved field management further reduced sediment transport. Erosion and sediment transport at the bay scale was sensitive to changes in the furrow/tail-drain layout. Changes in the furrow/tail-drain layout from the original design should be undertaken carefully so as not to increase sediment transport off-farm.

scholarly journals Soil salinity variations and cotton growth under long-term mulched drip irrigation in saline-alkali land of arid oasis

2021 ◽  
Author(s):  
Wenhao Li ◽  
Zhenhua Wang ◽  
Jinzhu Zhang ◽  
Rui Zong
Keyword(s):  
Survival Rate ◽  
Drip Irrigation ◽  
Root Zone ◽  
Saline Soil ◽  
Cotton Field ◽  
Annual Average ◽  
Irrigation Area ◽  
Soil Salt ◽  
Cotton Fields

AbstractThe sustainable development and utilization of saline-alkali land are closely related to holding fast the minimum cultivated land area of China. The change of soil salt in cotton field under long-term mulched drip irrigation (MDI) is connected with the development of the national cotton industry. From 2015 to 2019, five cotton fields with different applying years of MDI, which were reclaimed in 2004, 2008, 2010, 2012 and 2015 respectively and were saline-alkali wasteland before, were monitored continuously in the Manas River irrigation area of Xinjiang. By means of continuous location monitoring and spatial–temporal variability (For example, the monitoring data of cotton fields under MDI in 2004, 2008, 2010, 2012 and 2015, and in the year of 2015 were counted as 12, 8, 6, 4 and 1 years, respectively), the spatial–temporal variations of soil salt and ions in cotton field with 1-16a MDI technology were presented. The cotton growth characteristics and its main influencing factors were also analyzed in the study. The results showed that saline-alkali cotton field experienced changed from intensive saline soil to moderate saline soil and finally to non-saline soil under long-term MDI. The change of soil salt and the response of cotton growth to soil salt were divided into three typical stages. Firstly, soil desalinated rapidly in 1-4a MDI cotton field, which the annual average desalination rate was 24.93% in 0–100 cm soil layer (root zone). Additionally, the survival rate of cotton rocketed from 1.48% to 42.04%, and yield increased sharply from 72.43 kg ha−1 to 3075.90 kg ha−1. Soil desalination was lower in 5-11a MDI cotton field, which the annual average desalination rate was 10.92% at the root zone. The annual survival rate and yield of cotton increased by 6.26% and 5.18%, respectively. After 12a MDI, the soil salt in cotton field tended to be generally constant, which the average salt content in root zone was less than 2.49 g kg−1. The survival rate of cotton was stable above 90.39%, and the yield per unit area exceeded 5401.32 kg ha−1. Ions, sodium absorption ratio and Cl− and SO42− equivalent ratio (CSER) in cotton soil also decreased with the extension of MDI. Salt composition changed year by year, but the type of intensive saline soil had always been chloride-sulphate solonchak (0.2 < CSER < 1). In practice, with a higher irrigation quota and ideal irrigation water quality, the soil salt environment of saline-alkali soil MDI cotton field had developed in favor of cotton growth in an oasis irrigation area. However, this management practice caused between 124.21–143.61 mm of water resources waste. Therefore, we should further enhanced the consciousness of water-saving and implemented quota management in practice.

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