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Suihua, China

Zhou L.-J.,Suihua College | Zhang X.-P.,Harbin Normal University
Wetland Science

Zhalong National Nature Reserve (46°52′N -47°32′N, 123°47′E - 124°37′E) is located in the west part of Heilongjiang province. Using interpretation of TM images in 1989 and 1999 and CBERS images in 2006, the landscape pattern change in Zhalong National Nature Reserve was analyzed by GIS in this study. The area of the Reserve is 2 100 km2. The landscape indices such as fragment index, fractal dimension and the diversity indexes, etc. were calculated and analyzed. The results showed that Phragmites australis marsh was the landscape base and it controlled the matter and energy transfer and flow,the areas of marsh were 1 279. 3 km , 1 250. 9 km2 and 1 238.4 km2 in 1989, 1999 and 2006 in Zhalong National Nature Reserve, respectively; the landscape was in fragmentation and the biodiversity declined in the Reserve during 1989 -2006; the main conversion of the landscape components were grassland into cultivated land, marsh into cultivated land and marsh into saline;the lanscape became complicated in the Reserve. Source

Nie C.-H.,Northeast Petroleum University | Nie C.-H.,Suihua College | Wang B.-H.,Northeast Petroleum University
Xiandai Huagong/Modern Chemical Industry

On the basis of traditional process, new produced water treatment technologies are designed. The process and facilities on the pretreatment are added. The combination of hydrocyclone and quick-setting utensil is applied in the pretreatment of fine filtration. The process is shown as follows: the wastewater firstly entered into hydrocyclone equipment, then into the settling and separation equipment, after the fine filtration, the treated water obtained finally. In the treated water, the oil and the suspended substance content are 1.34 mg/L and 3.77 mg/L, respectively. The median diameter of the grains can reach 1.419 μm averagely. The oil content and the suspended substance content up to the standard are 100%. Source

Zhang S.,Harbin Normal University | Zhang S.,Suihua College | Zhou L.,Suihua College
Proceedings - International Conference on Computer Distributed Control and Intelligent Environmental Monitoring, CDCIEM 2011

Various factors affecting soil erosion were calculated, and the distribution map of soil erosion in Suihua in 2004 is obtained based on revised universal soil loss equation (RUSLE) and GIS technology and soil erosion of different land use types and different counties was analyzed, respectively. Results show that soil erosion in Suihua City mainly belongs to slight erosion, with an area of 16,083.9 km2, accounting for 46.34% of the total area; the area of moderate erosion is 1,583.52 km2, accounting for 4.56%. The erosion above moderate degree distributes in the river terrace along the rivers and transition zone with the washland. The area of soil erosion in Lanxi County and Qinggang County are the largest, and Wangkui County, Beilin District and Hailun City have the largest soil erosion above moderate degree. Soil erosion in dry farmland is the most serious with the largest area, soil erosion above moderate degree occurs in the unutilized land, and forest and grassland are subject to slight erosion. © 2011 IEEE. Source

Zhang S.,Harbin Normal University | Zhang S.,Suihua College | Zhou L.,Suihua College | Zhang X.,Harbin Normal University
2nd International Conference on Information Engineering and Computer Science - Proceedings, ICIECS 2010

The earth observation technology of remote sensing can offer rich variable data of urban expansion and becomes the main approach to monitor urban expansion. To obtain the characteristics of urban expansion process of Suihua city, we extracted urban land information base in five periods remote sensing images (1976, 1990, 2001, 2006 and 2009) using GIS technology, with the help of expansion intensity model, spatial center of gravity transfer model, compact index, urban land fractal index and urban expansion elasticity coefficient we analyzed the area, direction and form feature of urban land expansion in Suihua city. The result shows that during the 33 years from 1976 to 2009, the urban land area of Suihua was continuously increased, in which the urban expansion scale and speed are the largest from 2001 to 2009, the urban expansion direction is mainly in the west and the south, the urban compactness index is reduced, and the form feature is complex. ©2010 IEEE. Source

Dong Y.,Suihua College | Tian X.,Suihua College
Journal of Non-Crystalline Solids

One pot synthesis of Fe2O3-Al2O 3 nanocomposites was investigated for using in water treatment. X-ray diffraction (XRD) characterization shows that the sample is α-Fe 2O3 and γ-Al2O3 mixed phases material. The porous structure of Fe2O3-Al 2O3 nanocomposites can be confirmed by N 2-sorption isotherms. The specific surface area determined by BET surface area measurement was found to be 102.1 m2 g-1. Moreover, the porous Fe2O3-Al2O3 nanocomposites samples showed an excellent ability to remove heavy metal ion (Cr (VI)) in water treatment. © 2010 Elsevier B.V. All rights reserved. Source

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