scholarly journals Study on the Impacts of Land Consolidation Project on Soil Quality

2019 ◽  
Vol 384 ◽  
pp. 012066
Author(s):  
Lirong He
Keyword(s):  
Soil Quality ◽  
Land Consolidation ◽  
Land Consolidation Project

scholarly journals Comprehensive assessment of paddy soil quality under land consolidation: a novel perspective of microbiology

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7351 ◽  
Author(s):  
Yaoben Lin ◽  
Yanmei Ye ◽  
Cifang Wu ◽  
Jianhui Yang ◽  
Yiming Hu ◽  
...  
Keyword(s):  
Microbial Diversity ◽  
Soil Quality ◽  
Paddy Soil ◽  
Organic Fertilizer ◽  
Comprehensive Assessment ◽  
Assessment System ◽  
Land Consolidation ◽  
Nutrient Cycle ◽  
Control Group ◽  
Available Phosphorus

Soil quality assessment is an important means to demonstrate how effective land consolidation is. However, the existing assessment system is not sufficient to reflect actual soil quality. So, the purpose of this study is to integrate abiological and biological indicators into a comprehensive assessment to evaluate the paddy soil quality under different land consolidation practices. Soil samples were collected from 35 paddy sites under different land consolidation practices including land merging, land leveling (LL), ditch construction (DC) and application of organic fertilizer (AO). A total of 10 paddy sites were selected under conventional tillage (CT) from non-land consolidation area as a control group in Y county, China. The results indicated that soil organic matter (OM), total nitrogen (TN), available phosphorus, bacterial functional diversity (BFD), bacterial and fungal abundances were significantly improved. Fields under LL, among all the land consolidation practices, might still face the risk of land degradation caused by low TN, OM and microbial diversity. High microbial biomass, BFD and OM were significantly higher in fields under AO in nutrient cycle. According to the results of comprehensive assessment, the samples with severe heavy metal contamination and low microbial diversity were generally concentrated in CT. These results indicated that land consolidation was an efficient technique to improve soil quality and could achieve higher quality of agricultural products.

The Geo-Hazards Triggered of Serial Reclamation Land of Extreme Precipitation in Typical Regions of the Loess Plateau

2020 ◽  
Author(s):  
Zhe Gao
Keyword(s):  
Loess Plateau ◽  
Water Conservation ◽  
Rainfall Intensity ◽  
Soil And Water Conservation ◽  
Land Consolidation ◽  
Geological Hazards ◽  
The Loess Plateau ◽  
The World ◽  
Soil And Water ◽  
Land Consolidation Project

<p>The Geo-Hazards Triggered of Serial Reclamation Land of Extreme Precipitation in Typical Regions of the Loess Plateau<br>Gao Zhe<sup>1</sup>,Zhang Genguang <sup>1*</sup>,Gao Jian'en<sup>1,2,3</sup>,Li Xingyao<sup>1</sup>,Han Jianqiao<sup>2,3</sup>,Kang Youcai<sup>3</sup>,Guo Zihao<sup>3</sup>,Long Shaobo<sup>2</sup>,Dou Shaohui<sup>2</sup>,Zhang Yuanyuan<sup>3</sup><br>1. College of Water Resources and Architectural Engineering, Northwest A&F University, 712100, Yangling, Shaanxi, China;<br>2. Institute of Soil and Water Conservation, Northwest A&F University, 712100, Yangling, Shaanxi, China;<br>3. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, 712100, Yangling, Shaanxi, China;</p><p>The “Gully Land Consolidation Project”(GLCP) was widely carried out all over the world, such as Spain, the United States and China. It was a new attempt to solve the shortage of regional land resources. Aiming at the problem that the influence of extreme rainstorms on the “Gully Land Consolidation Project”(GLCP) on the Loess Plateau.By using the method of actual measurement and analysis of categorical data, the erosion disaster in July 26 2017 was investigated in Niu Xue Gully of Wuding River Watershed in Zizhou County of the Central part of the Loess Plateau. The results showed : </p><p>(1) The Niu Xue Gully Small Watershed in Zizhou County (109°55'25"E, 37°39'46"N), which was located in the central part of the Loess Plateau and belonged to the northern Shaanxi Loess Hilly-Gully region. The Niu Xuegou catchment covered an area of 0.48 km<sup>2</sup> and the average altitude of the region in about 1000-1200 meters, land consolidation in the basin about 38 mu（25333.3m<sup>2</sup>）since 2014.</p><p>(2) This storm was characterized by "long duration and large precipitation", the accumulated rainfall was 147.9 mm, the average rainfall intensity was 13.45 mm/h, the maximum rainfall intensity was close to 5 mm/min, the maximum flood peak discharge was 44.64 m<sup>3</sup>/s, the flood duration was about 11 hours, and the flood recurrence period was more than once in a hundred years.</p><p>(3) The storm caused nearly a thousand geological hazards at the channel of the basin. The main types of disasters were as follows, gravity erosion types, such as landslides, landslides, and mudflows, account for 14.85% of the conventional geological hazards; secondary disasters of water erosion types, such as trench erosion and dam erosion, occurring at different locations on the slope, accounted for 51.05% and composite new-derived land destruction and dam break disasters account for nearly 10% .</p><p>(4) The damage of cascade land preparation was closely related to the average flood discharge, embankment height and ecological vegetation cover in the watershed.<br>The investigation provided technical support for the consolidation of the Chinese implementation of the "Cropland to Forest (Grass)" results on the Loess Plateau, and also provided theoretical support for the safe implementation of the “Gully Land Consolidation Project”(GLCP) around the world.<br><br></p><p>Keywords: The loess plateau; Extreme rainstorm;The “Gully Land Consolidation Project”(GLCP)</p><p>Funding:(National Key R&D Program of China: 2017YFC0504703)；(National Natural Science Foundation of China,41877078,41371276,51879227);(Research and Development and Integrated demonstration of key Technologies in soil and Water Conservation Engineering,A315021615)</p><p><strong>        </strong></p>

Sandy Soil Consolidation and Water-Saving Process Design in the North China Plain

2012 ◽  
Vol 599 ◽  
pp. 795-803
Author(s):  
Yan Pei Cheng ◽  
Jian Kang Zhang ◽  
Fa Wang Zhang
Keyword(s):  
Sandy Soil ◽  
Process Design ◽  
North China Plain ◽  
North China ◽  
Agricultural Land ◽  
Water Saving ◽  
Land Consolidation ◽  
The North ◽  
The North China Plain ◽  
Land Consolidation Project

In order to study of the sandy soil use in the North China plain concerning land consolidation and water-saving techniques, the lack of sandy land groundwater resources, groundwater drainage of the land consolidation project due to a lack of resources basis, blind investment and consolidation benefits, also undermine the structure of the groundwater system. This paper took Wangyangxing village in Zaoqiang county, Hengshui City that first carried out, based on the water resource constraints of land consolidation project as example for site evaluation, and then the land consolidation of water-saving technology and the land consolidation process design theory was used. Hengshui City is one of parts of the sandy soil of agricultural land for a pilot study to explore the effectiveness of suitable sandy soil of agricultural land, land consolidation in the North China Plain for the full scientific utilization of water resources to improve the efficiency of the sandy soil land use and the basis.

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