HYDRAULIC ENGINEERING |
|
|
|
|
|
Relationship between the desertification risk index and blowing sand content of typical aeolian erosion areas in Sanjiangyuan |
XU Mengzhen1,2, LI Yanfu3, LI Zhiwei4, WANG Zhaoyin1,2, HAN Lujie1 |
1. State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China;
2. Sanjiangyuan Collaborative Innovation Center, Tsinghua University, Beijing 100084, China;
3. State Key Laboratory of Hydrology Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, China;
4. School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha 410015, China |
|
|
Abstract Field investigations and samplings in typical aeolian erosion areas in Sanjiangyuan were taken to study the features of sediment particles. The sediment composition distributions of active, semi-fixed, and fixed sand dunes were analyzed to identify the components of blowing sand when eroded by wind. The content of the blowing sand then influences the desertification. A desertification risk index which indicates the risk of desertification for an area was defined and applied to assess the desertification risk of the aeolian erosion areas. The desertification risk index of the sampled areas was correlated with the blowing sand percentage. Desertification is unlikely when the blowing sand percentage was less than 50%, with the desertification risk increasing exponentially as the blowing sand percentage increased for percentages over 60%. Therefore, the blowing sand percentage is recommended as an index for indicating the desertification risk of a region. Strategies to reduce the proportion of blowing sand and promoting vegetation coverage are recommended for preventing desertification in the Sanjiangyuan region.
|
Keywords
Sanjiangyuan
desertification risk index
blowing sand
grain size distribution
mineral composition
|
|
Issue Date: 15 April 2017
|
|
|
[1] |
曾永年, 马正龙, 冯兆东. 高寒草地沙漠化土地固碳潜力分析——以黄河源区为例[J]. 山地学报, 2009, 27(6): 671-675.ZENG Yongnian, MA Zhenglong, FENG Zhaodong. Potential to sequestering carbon from atmosphere through rehabilitating desertified land in the head water of the Yellow River[J]. Journal of Mountain Science, 2009, 27(6): 671-675. (in Chinese)
|
[2] |
董光荣. 中国沙漠形成演化气候变化与沙漠化研究[M]. 北京: 海洋出版社, 2002.DONG Guangrong. China Desert Formation Evolution Research on Climate Change and Desertification[M]. Beijing: Ocean Press, 2002. (in Chinese)
|
[3] |
DONG Zhibao, HU Guangyin, YAN Changzhen, et al. Aeolian desertification and its causes in the Zoige Plateau of China's Qinghai-Tibetan Plateau[J]. Environ Earth Sci, 2010, 59: 1731-1740.
url: http://dx.doi.org/10.1007/s12665-009-0155-9
|
[4] |
齐雁冰, 常庆瑞, 魏欣, 等. 高寒地区人工植被恢复对风沙土区土壤理化性状的影响[J]. 中国农学通报, 2005, 21(8): 404-408.QI Yanbing, CHANG Qingrui, WEI Xin, et al. Effect of artificial vegetation restoration on sanditificational soil characteristics in high frigid regions of China[J]. Chinese Agricultural Science Bulletin, 2005, 21(8): 404-408. (in Chinese)
|
[5] |
李艳富. 三江源风沙活动与植被发育的动力学研究[D]. 北京: 清华大学, 2012.LI Yanfu. A Study on the Dynamic Relation Between Sand Dunes and Vegetation in Sanjiangyuan[D]. Beijing: Tsinghua University, 2012. (in Chinese)
|
[6] |
林超峰, 陈占全, 薛泉宏, 等. 青海三江源地区风沙土养分及微生物区系[J]. 应用生态学报, 2007, 18(1): 101-106.LIN Chaofeng, CHEN Zhanquan, XUE quanhong, et al. Nutrient contents and microbial populations of aeolian sandy soil in Sanjiangyuan region of Qinghai Province[J]. Chinese Journal of Applied Ecology, 2007, 18(1): 101-106. (in Chinese)
|
[7] |
胡光印, 董治宝, 魏振海, 等. 江河源区沙漠化研究进展与展望[J]. 干旱区资源与环境, 2008, 22(7): 41-45.HU Guangyin, DONG Zhibao, WEI Zhenhai, et al. Progresses and perspective of studies on sandy desertification in the source regions of Yangtze River, Yellow River and Lantsang River[J]. Journal of Arid Land Resources and Environment, 2008, 22(7): 41-45. (in Chinese)
|
[8] |
国家林业局. 中国荒漠化和沙化土地图集[M]. 北京: 科学出版社, 2009.State Forestry Bureau. Atlas of Desertification and Desertification Land in China[M]. Beijing: Science Press, 2009. (in Chinese)
|
[9] |
方小敏, 李吉均, 周尚哲, 等. 黄河源风沙沉积及意义[J]. 沉积学报, 1998, 16(1): 40-44.FANG Xiaomin, LI Jijun, ZHOU Shangzhe, et al. Aeolian sand deposition in the source area of Yellow River and its significance[J]. Acta Sedimentologica Sinica, 1998, 16(1): 40-44. (in Chinese)
|
[10] |
方小敏, 韩永翔, 马金辉, 等. 青藏高原沙尘特征与高原黄土堆积——以2003-03-04拉萨沙尘天气过程为例[J]. 科学通报, 2004, 49(11): 1084-1090.FANG Xiaomin, HAN Yongxiang, MA Jinhui, et al. Aeolian activity in Qinghai-Tibet Plateau: Taking the 2003-03-04 Lhasa dust weather process as an example[J]. Chinese Science Bulletin, 2004, 49(11): 1084-1090. (in Chinese)
|
[11] |
曾永年, 向南平, 冯兆东, 等. Albedo-NDVI特征空间及沙漠化遥感监测指数研究[J]. 地理科学, 2006, 26(1): 75-81. ZENG Yongnian, XIANG Nanping, FENG Zhaodong, et al. Albedo-NDVI space and remote sensing synthesis index models for desertification monitoring[J]. Scientia Geographica Sinica, 2006, 26(1): 75-81. (in Chinese)
|
[12] |
牛占, 李静, 和瑞莉, 等. 筛法/激光粒度仪法接序测定全样泥沙级配的调整处理[J]. 水文, 2006, 26(1): 72-75.NIU Zhan, LI Jing, HE Ruili, et al. The correction method of grain size of total load for the phenomena of results of two series of grain size analysis intercrossed during the analysis with both sieve method and laser grain size analyzer[J]. Journal of China Hydrology, 2006, 26(1): 72-75. (in Chinese)
|
[13] |
吕海波, 曾召田, 尹国强, 等. 广西红黏土矿物成分分析[J]. 工程地质学报, 2012, 20(5): 651-656.LV Haibo, ZENG Zhaotian, YIN Guoqiang, et al. Analysis of mineral composition of red clay in Guangxi[J]. Journal of Engineering Geology, 2012, 20(5): 651-656. (in Chinese)
|
[14] |
董治宝, 胡光印, 颜长珍, 等. 江河源区沙漠化[M]. 北京: 科学出版社, 2012.DONG Zhibao, HU Guangyin, YAN Changzhen, et al. Aeolian desertification in the source regions of Yangtze River and Yellow River[M]. Beijing: Science Press, 2012. (in Chinese)
|
[15] |
Lancaster N. Development of linear dunes in the southwestern Kalahari, Southern Africa[J]. Journal of Arid Environments, 1998, 14(3): 233- 244.
|
[16] |
刘树林, 王涛, 屈建军, 等. 中国北方草原沙漠化发展过程及其成因分析——以内蒙古苏尼特左旗为例[J]. 中国沙漠, 2009, 29(2): 206-212.LIU Shulin, WANG Tao, QU Jianjun, et al. Aeolian desertification development of grassland in the northern China and its causes: A case study of Sonid Zuoqi[J]. Journal of Desert Research, 2009, 29(2): 206-212. (in Chinese)
|
[17] |
李艳富, 王兆印, 余国安, 等. 三江源区风沙沉积物的特性[J]. 清华大学学报(自然科学版), 2013, 53(1): 18-23.LI Yanfu, WANG Zhaoyin, YU Guoan, et al. Characteristics of blown sand deposits in the Sanjiangyuan region[J]. Journal of Tsinghua University (Sci & Tech), 2013, 53(1): 18-23. (in Chinese)
url: http://dx.doi.org/al of Tsinghua University (Sci
|
[18] |
吴正. 风沙地貌与治沙工程学[M]. 北京: 科学出版社, 2003.WU Zheng. Geomorphology of Wind-drift Sands and Their Controlled Engineering[M]. Beijing: Science Press, 2003. (in Chinese)
|
[19] |
韩有香, 李国山. 近30年黄河源头玛多县气候变化特征[J]. 青海气象, 2011, 2: 36-41.HAN Youxiang, LI Guoshan. The characteristics of climate change of the Yellow River source, Madoi county in the recent 30 years[J]. Journal of Qinghai Meteorology, 2011, 2: 36-41. (in Chinese)
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
|
Shared |
|
|
|
|
|
Discussed |
|
|
|
|