The Change Law of RMSs Characteristics in Grassland Opencast Coal Mine Dump of China

2013 ◽  
Vol 726-731 ◽  
pp. 4831-4837
Author(s):  
Rui Xuan Yang ◽  
Jin Man Wang
Keyword(s):  
Organic Matter ◽  
Coal Mine ◽  
Land Reclamation ◽  
Ph Value ◽  
Soil Bulk Density ◽  
Available P ◽  
Land Resources ◽  
Total N ◽  
Opencast Coal Mine ◽  
Mine Dump

With construction and development of opencast coal mine, its damage to the land resources and ecological environment in mine area become increasingly serious. Thus, assessing change law of reclaimed mine soils is essential for land reclamation and ecological restoration in ecological fragile area. Is this study, soil Bulk Density, Organic matter, Available P, Available K, Alkali-hydrolyzed N, Total N, pH value, Electrical Conductivity was analyzed in different sampling sites with different reclamation age and an unmined site as a reference in Inner Mongolia mining waste dump. The soil Organic matter, Available P, Available K, Alkali-hydrolyzed N and Total N increased with reclamation age, all the soil factors gradually arrived at their content in original landform. A model of RMSs characteristics was constructed using index sum method. RMSs characteristics had been improved in study area, and gradually arrived at the original landform level.

Study on Soil Carbon Sequestration in the Heidaigou Opencast Coal Mine

2013 ◽  
Vol 726-731 ◽  
pp. 204-208
Author(s):  
Ze Zhen Jiao ◽  
Jin Man Wang ◽  
Rui Xuan Yang ◽  
Xin Feng Li
Keyword(s):  
Carbon Sequestration ◽  
Soil Carbon ◽  
Coal Mine ◽  
Land Reclamation ◽  
Mining Area ◽  
Soil Bulk Density ◽  
Opencast Mining ◽  
Carbon Density ◽  
Opencast Coal Mine ◽  
Sensing Technology

The carbon sequestration of Heidaigou opencast mining area was calculated by using carbon density method based on remote sensing technology, combined field surveys and data measured indoor. Soil bulk density, soil organic matter and other soil properties of the 63 soil samples in the Heidaigou mining area were measured. The results indicated the following conclusions. (1) The carbon sequestration of Heidaigou opencast coal mine area was 4,651,623.30 t in 2010. (2) There was a positive correlation between soil carbon density and the age of land reclamation. (3)After reclamation the carbon sequestration of Heidaigou opencast coal mine increased by 239,748.61 t. So the potential for carbon sequestration is great in this area. The results indicate that the mining area land reclamation can improve soil carbon acquisition capability and maintain the ecological balance of carbon cycle.

Effect of density of Tephrosia candida stands on soil characteristics

2016 ◽  
Author(s):  
Zhiyang Lie ◽  
Zhuomin Wang ◽  
Li Xue
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Ph Value ◽  
Soil Nutrient ◽  
Stand Density ◽  
Nutrient Content ◽  
Total N ◽  
One Year ◽  
Tephrosia Candida ◽  
Total P

With one-year-old Tephrosia candida trees as experimental material, influence of stand density on soil nutrient content and enzyme activity was studied. The results showed that density had little influenced on pH value in 2, 4 and 8 trees m2 stands. The contents of soil organic matter, effective nitrogen and effective phosphorus significantly increased in 2 trees m2 stands. The contents of soil organic matter and effective nitrogen significantly increased, whereas total N, total P, total K, effective N, effective P and effective K significantly decreased in 4 trees/m2 stand. Soil organic matter and nutrients except for total P significantly decreased in 8 trees m2 stand. Among the three density stands, the activities of urease, catalase and phosphatase were the lowest in 8 trees m2 stand.

Soil Improvement of Pinus yunnanensis Forest at Different Age in Central Yunnan Plateau

2013 ◽  
Vol 864-867 ◽  
pp. 2565-2568
Author(s):  
Jin Xia Wu ◽  
Yan Xia Wang ◽  
Qi Bo Chen ◽  
Zhi Long Tong
Keyword(s):  
Organic Matter ◽  
Nitrogen Content ◽  
Total Nitrogen ◽  
Ph Value ◽  
Secondary Forest ◽  
Soil Bulk Density ◽  
Total Nitrogen Content ◽  
Planted Forest ◽  
Pinus Yunnanensis ◽  
Natural Water Content

Took the Pinus yunnanensis forest as the research object, and took planted forest for control, carried on a research in soil physicochemical properties of different forest ages of Pinus yunnanensis. The results show that: For secondary forests at different ages, (1) middle-aged forest has the smallest soil bulk density and largest soil natural water content. Compared with the same age planted forest, secondary forest has smaller soil bulk density and larger soil natural water content.(2) Middle-aged forest has the smallest soil pH value, and the tallest total nitrogen content and soil organic matter in the 0-20cm soil layer. Compared with the same age planted forest, secondary forest has smaller pH value. While its soil organic matter and total nitrogen content are more than planted forest significantly.(3)There is an extremely significant negative correlation among pH value, soil organic carbon and total nitrogen content; while an extremely significant positive correlation between soil organic carbon and total nitrogen content.

Estimation of Fractional Vegetation Cover in Opencast Coal Mine Dump Area Using Landsat TM Data

2010 ◽  
Vol 8 (1) ◽  
pp. 81-88 ◽  
Author(s):  
Xiaochen Zou ◽  
Wei Su ◽  
Yingyi Chen ◽  
Li Li ◽  
Daoliang Li
Keyword(s):  
Coal Mine ◽  
Vegetation Cover ◽  
Landsat Tm ◽  
Fractional Vegetation Cover ◽  
Opencast Coal Mine ◽  
Mine Dump

Study on the Bioavailability of Soil Heavy Metal

2012 ◽  
Vol 610-613 ◽  
pp. 3085-3090
Author(s):  
Xiao Guang Zhao ◽  
Wen Yu Huang ◽  
Le Yao
Keyword(s):  
Heavy Metal ◽  
Moisture Content ◽  
Soil Texture ◽  
Ph Value ◽  
Total Content ◽  
Available P ◽  
Total N ◽  
Physiochemical Properties ◽  
Soil Heavy Metal ◽  
Properties Of Soil

This paper analyzes the bioavailability of soil heavy metal with morphology, geochemical facies, activity coefficient, migration coefficient, metastasis coefficient of soil heavy metal in the Puyu village, Huayin city. The research results show that: firstly, physiochemical properties of soil (include moisture content, available P, available K, total N, soil texture and so on) are key influencing factors for heavy metal activity, and correlation between total content and various morphology content of heavy metal too; secondly, antagonism and synergism are discovered among various heavy metal; thirdly, the correlation between the total content of heavy metal and physiochemical properties of soil such as PH value, moisture content, available P, available K, total N, soil texture is significant.

Analysis of Spatial Variability of Soil Granules in early Stage of Reclamation at Opencast Coal Mine Dump in Loess Area

2014 ◽  
Vol 955-959 ◽  
pp. 3746-3756
Author(s):  
Ling Li Guo ◽  
Jin Man Wang ◽  
Zhong Ke Bai ◽  
Rui Xuan Yang ◽  
Yin Gui Cao
Keyword(s):  
Spatial Distribution ◽  
Coal Mine ◽  
Land Reclamation ◽  
Early Stage ◽  
Spherical Model ◽  
Exponential Model ◽  
Variance Function ◽  
Loess Area ◽  
Silt Content ◽  
Mine Dump

Quality of soil reconstruction is directly related to the vegetation recovery of opencast coal mine in loess area, therefore, research on soil properties of land reclamation has a very important role in mine ecological recovery. Based on an reclamation open coal mine dump loess area as the research area, semi-variance function as the basic tools, combined with traditional statistics and geo-statistics method, with statistical module of arcgis10.0, was applied to study the spatial variability of 0 ~ 40cm soil granules in early stage of reclamation, and using ordinary kriging method to draw the spatial distribution map of different particle size of soil granules. Results show that: (1) in early stage of reclamation, between 0 ~ 20 cm and 20 ~ 40 cm the component characteristic of different size of soil granules was similar, the average of silt content was all highest in the whole research region .(2) through the semi-variance function fitting, the theory model of semi-variogram of clay accord with spherical model, the semi-variance function of silt content in 0 ~ 20 cm level in line with the spherical model, in the 20 ~ 40 cm accord with the exponential model, the semi-variance model of sand in 0 ~ 20 cm fit with the spherical model, in the 20 ~ 40 cm semi-variance function in line with the exponential model, different size of soil granules content has spatial auto-correlation in a certain range, showing that has a medium spatial correlation. (3) the map can reveals the spatial distribution of soil granules in different levels, in 0 ~ 20 cm, on the horizontal direction of silt content in the high value area in the study area corresponds to the sand content is low in the area, both of them have good complementary, and in the vertical direction different soil granules content in the spatial distribution has no obvious regularity. This study can provide certain reference for loess area land reclamation of soil profile reconstruction and soil fertilization and amelioration.

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