文献类型： 外文期刊
作者： Zhang, Jingcheng 1 ; Wang, Jihua 1 ; Gu, Xiaohe 1 ; Luo, Juhua 1 ; Huang, Wenjiang 1 ; Wang, Kun 1 ;
作者机构： 1.Natl Engn Res Ctr Informat Technol Agr, Beijing 100097, Peoples R China
2.Zhejiang Univ, Inst Agr Remote Sensing & Informat Syst Applicat, Hangzhou 310029, Zhejiang, Peoples R China
3.Lanzhou Jiaotong Univ, Sch Math Phys & Software Engn, Lanzhou 730070, Peoples R China
关键词： Remote sensing (RS); Geographical informatics system (GIS); Ecosystem services value (ESV); Universal soil loss equation (USLE)
期刊名称：MATHEMATICAL AND COMPUTER MODELLING （ 影响因子：1.366； 五年影响因子：1.602 ）
ISSN： 0895-7177
年卷期： 2011 年 54 卷 3-4 期
页码：
收录情况： SCI
摘要： The assessment of sustainability in cropping system is an important issue for natural resources management and environmental protection. Incorporating the geographical information system (GIS) and remote sensing (RS) technologies, an initial idea of the crop sustainability assessing system was thus proposed, based on ecosystem services value (ESV) assessing criterions. The system is basically constituted by two major parts, which were net primary production (NPP) based ESV evaluating system and universal soil loss equation (USLE) based conserving soil and water (CSW) evaluating system. The input datasets includes temporal moderate resolution satellite images (HJ-CCD), Meteorological data, DEM data and soil data. To test the efficiency of the proposed system, an assessment was thus conducted along the Huai river watershed. The results showed that the value of sustainability for the study area was 40.89 x 10(4) yuan/m(2) in average. Besides, a descending trend of sustainable value was found along the watershed from the outer region to center. Moreover, it was pointed out that the agroecosystem provided more value or services in feeding people than in maintaining the sustainability of the environment, comparing with the other ecosystem, such as forests and wetlands. Thereby, it is recommended to maintain or increase the ecosystem diversity in a place, which would be able to enhance the sustainability of it. (c) 2010 Elsevier Ltd. All rights reserved.
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