李建龙. 草地退化遥感监测. 北京: 科学出版社, 2012: 34-35. 俞斌华, 侯扶江, 林慧龙. 牧草种群生长对家畜践踏的短期响应. 草业学报, 2005, 14(4): 119-124. Gao Q Z, Duan M J, Li Y, et al. Change trends of grassland coverage and pasture growth in the Northwest Area of Tibet. Chinese Journal of Agrometeorology, 2010, 31(4): 582-585. Li Y, Zhang F, Wang Q. Analysis of dynamic change of Hulunbeier grassland vegetation coverage. Journal of Arid Land Resources and Environment, 2010, 24(6): 126-131. Ji S J, Geng Y, Li D F, et al. Plant coverage is more important than species richness in enhancing aboveground biomass in a premature grassland, northern China. Agriculture Ecosystems and Environment, 2009, 129(4): 491-496. 王伯荪. 植物群落学. 北京: 高等教育出版社, 1987: 18-19. Dombois D M, Ellenberg H. Aims and Methods of Vegetation Ecology. NewJersey: John Wiley and Sons, 1974. Moore P D, Chapman S B. Methods in Plant Ecology. London: Blackwell Scientific Publications, 1986: 449-452. Smith M O, Ustin S L, Adams J B, et al. Vegetation in deserts: I. A regional measure of abundance from multispectral images. Remote Sensing of Environment, 1990, 31(1): 1-26. Duncan J, Stow D, Franklin J, et al. Assessing the relationship between spectral vegetation indices and shrub cover in the Jornada Basin, New Mexico. International Journal of Remote Sensing, 1993, 14(18): 3395-3416. 张自和. 一种新的草地盖度测定器及使用方法. 草业科学, 1997, 14(1): 49-50. Hatton T J, West N E, Johnson P S. Relationships of the error associated with ocular estimation and actual total cove. Journal of Range Management, 1986, (39): 91-92. 章文波, 符素华, 刘宝元. 目估法测量植被覆盖度的精度分析.北京师范大学学报(自然科学版), 2001, 37(3): 402-408. Thalen D C P. Ecology and Utilization of Desert Shrub Rangelands in Iraq. Hague: Kluwer Academic Publishers, 1979. Wimbush D, Barrow M, Costin A. Color stereophotography for the measurement of vegetation. Ecology, 1967, 48(1): 150-152. 池宏康, 周广胜, 许振柱, 等. 草地植被盖度的近距离遥感测定. 草业学报, 2007, 16(2): 105-110. 张清平, 章山山, 陈露, 等. 应用WinCAM软件判识分析草坪盖度. 草业科学, 2010, 27(7): 13-17. 宋雪峰, 董永平, 单丽燕, 等. 用数码相机测定草地盖度的研究. 内蒙古草业, 2004, 16(4): 1-6. 钱金波, 马明国. 基于数码照片的狼毒盖度估算. 地球科学进展, 2009, 24(7): 776-783. 张云霞, 李晓兵, 张云飞. 基于数字相机、ASTER和MODIS影像综合测量植被盖度. 植物生态学报, 2007, 31(5): 842-849. 关法春, 梁正伟, 王忠红, 等. 方格法与数字图像法测定盐碱化草地植被盖度的比较. 东北农业大学学报, 2010, 41(1): 130-133. 温庆可, 张增祥, 刘斌, 等. 草地覆盖度测算方法研究进展. 草业科学, 2009, 26(12): 30-36. |