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[1]TONG Guangchen,LIN Jie,CHEN Hang,et al.Ecological Change Assessment in Ganyu of Lianyungang City From 1994 to 2014[J].Research of Soil and Water Conservation,2016,23(06):352-357.

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Ecological Change Assessment in Ganyu of Lianyungang City From 1994 to 2014

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 06 Page number: 352-357 Column: Public date: 2016-12-28

Title:: Ecological Change Assessment in Ganyu of Lianyungang City From 1994 to 2014

Author(s):: TONG Guangchen¹, LIN Jie¹, CHEN Hang², GU Zheyan², TANG Peng¹, CHENG Jianmin³, ZHANG Jinchi¹; 1. College of Forestry, Collaborative Innovation Center of Sustainable Forestry in Southern China of Jiangsu Province, Nanjing Forestry University, Key Laboratory of Soil and Water Conservation and Ecological Restoration of Jiangsu Province, Nanjing 210037, China;
2. Jiangsu Surveying and Design of Water Resources Co., Ltd., Yangzhou, Jiangsu 225127, China;
3. Jiangsu Province Hydrology and Water Resources Investigation Bureau, Lianyungang, Jiangsu 222004, China

Keywords:: ecological assessment; remote sensing based ecology index; Ganyu District

CLC:: TP79;X87;S157

DOI:: -

Abstract:: Using the remote sensing ecological index (RSEI) to evaluate the regional ecological changes, we can obtain the ecological environment changes of soil erosion area in time and quickly. Choosing Ganyu as the study area, we also chose 1994 Landsat TM remote sensing images and 2014 Landsat OLI remote sensing images as the data sources. Green degree, humidity, heat and dry degree were extracted as indicators of evaluation model. Combined with principal component analysis method, we analyzed the ecological changes of study area quantitatively and objectively in the past 20 years. The results showed that during the whole study period, the remote sensing ecological index which was 0.577 in 1994 and rose to 0.639 in 2014, an increased by 10.75%; excellent grade of eco-area which accounted for 42.7% of the area in 1994 and rose to 50.41% in 2014, and increased by 18.06%, mainly in the hills and mountains in the northwest. Through the investigation and analysis of the Ganyu District, the comprehensive management of small watershed based on forest planting has played an important role in the improvement of the ecological quality.

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