高寒沙地植物的沙堆形态特征及其成因分析
收稿日期: 2017-09-03
修回日期: 2017-10-31
网络出版日期: 2018-06-01
基金资助
国家自然基金项目(41661001,41461002);青海省高端千人计划项目资助
Morphologic Features and Forming Causes of Plant Sandpiles in Alpine Sand Land
Received date: 2017-09-03
Revised date: 2017-10-31
Online published: 2018-06-01
吴汪洋,张登山,田丽慧,张明远,周鑫 . 高寒沙地植物的沙堆形态特征及其成因分析[J]. 干旱区研究, 2018 , 35(3) : 713 -721 . DOI: 10.13866/j.azr.2018.03.26
Morphology of plant sandpiles is an important reflection of ecological suitability and sand-fixing benefits of different artificial plants. Based on the explorations of the features and formation causes of sandpiles, the erosion and deposition of plant sandpiles can be instinctively compared to provide some basic reasons for selecting the sand-fixing plant species. It is also vital to reveal the relationship between alpine vegetation growth and wind-blown sand activities. The main sandpiles where five typical sand-fixing plant species were afforested in the Ketu sand land on the eastern shore of Qinghai Lake were focused on. Based on the methods of morphological fitting and sand-deposition monitoring, three-dimensional morphology of vegetation sandpiles was simulated and analyzed with the vegetation investigations and wind-blown sand observations during the period of 2015-2016. Based on the statistic results of the total and sectional deposition depths, intensity and affecting factors of wind-blown sand, we found that: ① The sandpiles with conical, hemispherical or linear shapes could form if Hippophae rhamnoides, Salix cheilophila, Pinus sylvestris, Simon poplar and Artemisia desertorum were afforested. Deep and strong sand deposition could occur on the H. rhamnoides and A. desertorum sandpiles, and the projected area and three-dimensional volume of these sandpiles were larger than those of other three light-erosive or light-depositional plant sandpiles; ② Among the eight directional sections of the sandpiles, sand deposition occurred mainly along the northeast-east-southeast directions. In consequence of significant negative correlations between depositional intensity and sediment transport rate along the same directions, the depositional intensity and direction over all the vegetation sandpiles were quite different, especially over the S. cheilophila, S. poplar and A. desertorum sandpiles. In addition, the deposition depth and intensity changed significantly along the directions of northwest, east and southeast; ③ The morphologic differences of plant sandpiles were mainly affected by vegetation growth, the sand depositional depth of H. rhamnoides and S. poplar sandpiles increased with the increase of plant height and canopy and soil crust, especially with their coupling effects. P. sylvestris and S. poplar sandpiles were strongly affected by the basal diameter and clear bole length. Furthermore, the strong west-northwest-north winter wind affected the sandpile erosion, it was also verified by the significantly negative correlations between the directional sand accumulated depth and sand transport intensity, especially for the S. cheilophila and A. desertorum. Calculated by the sand-fixing intensity and surface sediment transport intensity, we could predict the sand accumulation modulus of the five forest dunes, the H. rhamnoides and S. cheilophila forests prevented the sand most with the amount of 400-1 100 t·hm2. because of their high afforesting density and surviving rates. In general, H. rhamnoides, S. cheilophila and A. desertorum could be chosen as the adaptive and efficient sand-fixing vegetation species with sand-fixing benefits of 40.45%, 15.53 % and 62.72% respectively, while the other artificial plant species demand afforesting conservation and structure optimization for their low sand-prevention effects lower than 5%.
[1] Bochet E, Poesen J, Rubio J L. Mound development as an interaction of individual plants with soil, water erosion and sedimentation processes on slopes [J]. Earth Surface Process and Landforms, 2000, 25: 847-867.
[2] Katrin Burri, Christof Gromke, Michael Lehning, et al. Aeolian sediment transport over vegetation canopies: A wind tunnel study with live plants [J]. Aeolian Research, 2011, 3(2): 205-213.
[3] Tengberg A. Nebkhas dunes as indicators of wind erosion and land degradation in the sahel zone of Burkina Faso [J]. Journal of Arid Environments, 1995, 30(3): 265 -282.
[4] Hesp P, McLachlan A. Morphology, dynamics, ecology and fauna of Arctotheca populifolia and Gazania rigens nabkha dunes [J]. Journal of Arid Environments, 2000, 44(2): 155-172.
[5] Khalaf F I, Misak R, Al-Dousari A. Sedimentological and morphological characteristics of some nabkha deposits in the northern coastal plain of Kuwait, Arabia [J]. Journal of Arid Environments, 1995, 29(3): 267-292.
[6] Wu S L, Li Z, Xiao C X, et al. Research progress on nabkhas and research significance[J]. Journal of Desert Research, 2006, 26(5): 734-738.
[7] 岳兴玲, 哈斯, 庄严美,等. 沙质草原灌丛沙堆研究综述[J]. 中国沙漠, 2005, 16(4): 360-363. [Yue Xingling, Hasi, Zhuang Yanmei, et al. Studies on sandy grassland nebkhas :A review [J]. Journal of Desert Research, 2005, 16(4): 360-363.]
[8] 杜建会,严平,董玉祥. 干旱地区灌丛沙堆研究现状与展望[J]. 地理学报,2010, 65(3):339-350.[Du Jianhui, Yan Ping, Dong Yuxiang. The progress and prospects of nebkhas in arid areas [J]. Journal of Geographical Sciences, 2010, 65 (3): 339-350.]
[9] 陈东,张宇清,吴斌,等. 毛乌素沙地南缘油蒿(Artemisia ordosica)灌丛沙堆形态特征[J]. 中国沙漠,2015,35(3): 565-572.[Chen Dong, Zhang Yuqing, Wu Bin,et al, et al. The morphological characteristics of Artrmisia ordosica Nebkhas at different evolvement stages in Southern Margin of the Mu Us Desert [J]. Journal of Desert Research, 2015, 35(3): 565-572.]
[10] 李志忠,武胜利,王晓峰,等. 新疆和田河流域柽柳沙堆的生物地貌发育过程[J]. 地理学报,2007,62(5): 462-470. [Li Zhizhong, Wu Shengli, Wang Xiaofeng, et al. Bio-geomorphologic features and growth process of Tamarix nabkhas in Hotan River Basin, Xinjiang [J]. Journal of Geographical Sciences, 2007, 62(5): 462-470.]
[11] 韩磊,张媛媛,马成仓,等. 狭叶锦鸡儿(Caragana stenophylla)灌丛沙堆形态发育特征及固沙能力[J]. 中国沙漠,2013, 33(5):1 305-1 309. [Han Lei, Zhang Yuanyuan, Ma Chengcang, et al. Nabkha morphology, development and sand-fixxing capability of Caragana stenophylla in the Inner Mongolia Plateau [J]. Journal of Desert Research, 2013, 33(5): 1 305-1 309.]
[12] 李进. 人工樟子松-差不嗄蒿植被及其固沙作用[J]. 生态学杂志,1992,11(3):19-23,29. [Li Jin. Artificial vegetation of Pinus sylvestris var, mongolica and Artemisia halodendron and its effect on sand dune stabilization [J]. Chinese Journal of Ecology, 1992, 11(3): 19-23,29.]
[13] 来风兵,孙虎,张展赫,等. 塔克拉玛干沙漠和田河西侧胡杨沙堆的形态特征及空间分布格局[J]. 中国沙漠,2015, 35(2):284-293. [ Lai F, Sun H, Zhang Z, et al. Morphological characteristics and spatial pattern of Populus euphratica Nebkhas to the west of the Hotan River in the Taklimakan Desert [J]. Journal of Desert Research, 2015, 35 (2): 284-293.]
[14] 胡国云,郭中领,王仁德, 等. 河北坝上低山区坡地灌丛沙堆形态与沉积特征[J]. 水土保持研究,2016, 23(4):251-256. [Hu Guoyun, Guo Zhongling, Wang Rende, et al. Morphology and sediment characteristics of Nebkhas on slopes in Bashang Region, Hebei Provice [J]. Research of Soil and Water Conservation, 2016, 23 (4): 251-256.]
[15] 张萍,哈斯,岳兴玲,等. 白刺灌丛沙堆形态与沉积特征[J]. 干旱区地理,2008,30(6): 926-932. [Zhang Ping, Hasi, Yue Xingling, et al. Nitaraia Nebkhas: Morphology and sediments [J]. Arid Land Geography, 2008, 30(6): 926-932.]
[16] 武胜利,李志忠,惠军等. 和田河流域灌(草)丛沙堆的形态特征与发育过程[J]. 地理研究. 2008, 27(02): 314-322. [Wu S, Li Z, Hui J, et al. The morphological characteristics and growth mode of nabkha in the basin of Hotan River , Xinjiang [J]. Geographical Research, 2008, 27(02): 314-322.]
[17] 刘冰, 赵文智, 杨荣. 荒漠绿洲过渡带柽柳灌丛沙堆特征及其空间异质性[J]. 生态学报, 2008, 28(4): 1 446-1 455. [Liu Bing, Zhao Wenzhi, Yang Rong. Characteristics and spatial heterogeneity of Tamarix ramosissima Nebkhas at Desert-Oasis Ecotone [J]. Acta Ecologica Sinica, 2008, 28(4): 1 446-1 455.]
[18] 李晓媛. 基于ArcGIS的艾比湖周边灌丛沙堆三维形态特征的提取与分析[J]. 城市勘测,2011(4):9-12. [Li Xiaoyuan. The spatial pattern analysis of nebkhas in the Ebinur lake periphery base on arcGIS [J]. Urban Geotechnical Investigation & Surveying, 2011(4): 9-12.]
[19] 张登山,高尚玉,石蒙沂,等.青海高原土地沙漠化及其防治[M].北京:科学出版社, 2009. [Zhang Dengshan, Gao Shangyu, Shi Mengyi, et al. Sandy Desertification and Its Control in the Qinghai Plateau[M]. Beijing: Science Publishing , 2009.]
[20] 李少华,张立恒,王学全, 等. 高寒灌木固沙区土壤性状与植被生长特征的相关分析[J].干旱区研究,2017,34(6):1 331-1 337.[Li Shaohua, Zhang Liheng, Wang Xuequan, et al. Associated analysis of soil properties and shrubs growth characteristics in alpine sandy area[J]. Arid Zone Research, 2017,34(6):1 331-1 337.]
[21] 邢媛媛,王永东,雷加强. 草地灌丛化对植被与土壤的影响[J].干旱区研究,2017,34(5):1 157-1 163. [Xing Yuanyuan, Wang Yongdong, Lei Jiaqiang. Influences of bush encroachment on vegetation and soil[J]. Arid Zone Research, 2017, 34(5):1 157-1 163.]
[22] Leenders J K., van Boxel J H, Sterk G. The effect of single vegetation elements on wind speed and sediment transport in the Sahelian zone of Burkina Faso [J]. Earth Surface Processes and Landforms, 2007, 32(10): 1454-1474.
[23] 杨帆,王雪芹,杨东亮等. 不同沙源供给条件下柽柳灌丛与沙堆形态的互馈关系:以策勒绿洲沙漠过渡带为例[J]. 生态学报,2012, 32(9): 2 707-2 719. [Yang Fan, Wang Xueqin, Yang Dongliang, et al. Research on the morphological interactions between Tamarix ramosissima thickets and Nebkhas under different sand supply conditions: A case study in Cele oasis-desert ecotone [J]. Acta Ecologica Sinica, 2012, 32(9): 2 707-2 719.]
[24] 张克存,屈建军,俎瑞平,等. 不同下垫面对风沙流特性影响的风洞模拟研究[J]. 干旱区地理,2004, 27(3):352-355. [Zhang Kecun, Qu Jianjun, Zu Ruiping, et al. Wind tunnel simulation about the effects of the different underlying surfaces on the features of drifting sand current [J]. Arid Land Geography, 2004, 27 (3): 352-355.]
[25] 马士龙, 丁国栋, 郝玉光等. 单一白刺灌丛堆周围风速流场的试验研究[J]. 水土保持研究, 2006, 13(6): 147-149. [Ma Shilong, Ding Guodong, Hao Suguang, et al. Experimental research of viscous flow around a Nitraria tangutorum Boscage [J]. Research of Soil and Water Conservation, 2006, 13(6): 147-149
[26] 安晶,哈斯,杜会石,等.内蒙古高原小叶锦鸡儿灌丛沙堆对气流结构与风蚀的影响[J].干旱区研究, 2015, 32(2): 304- 312.[An Jing, Ha Si, Du Hhuishi, et al. Impact of Caragana microphylla Nabkhas on air flow structure and wind erosion in Inner Mongolia Plateau[J]. Arid Zone Research, 2015, 32(2):304-312. ]
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