|
|
|
| Morphological Characteristics and Distribution Patterns of Nebkhas in Desert-oasis Ecotone |
| Zhang Jinhu1,2, Tang Jinnian1,3, Li Delu1, Wei Linyuan1, Man Duoqing1, Chai Chengwu1 |
1. State Key Laboratory Breeding Base of Desertification and Aellian Sand Disaster Combating, Gansu Desert Control Research Institute, Lanzhou 730070, China;
2. Lanzhou University, Lanzhou 730000, China;
3. Institute of Desertification Studies, Chinese Academy of Forestry, Beijing 100091, China |
|
|
|
|
Abstract The desert-oasis ecotone in Minqin,Gansu, China was selected as the studied area, and the morphological characteristics and distribution patterns of nebklas in three habitats, just desert, desert-oasis ecotone and oasis were researched by the quadrat survey method. The results are as follows. (1) There were significant differences of the nebklas' morphological characteristics among the different habitats (p<0.01). The average height, bottom area, vertical and cross section and volume of the nebkhas were all the largest in the oasis, followed by the desert, and the last was the desert-oasis ecotone. (2)There was significant quadratic function relationship between the long axis and short axis of nebklas, but with different degree of correlation, the highest was in the desert-oasis ecotone with correlation coefficient value 0.78, while the lowest was in the oasis with correlation coefficient value 0.57. Typical power function relationships were existed between the height and bottom area, and also between the volume and height of the nebklas, the correlation coefficient values were all more than 0.59. (3) The nebklas in the desert-oasis ecotone was presented clustered distribution with much higher distribution density, while in the oasis and the desert area nebklas showed random distribution with lower distribution density.
|
|
Received: 29 December 2014
Published: 20 September 2015
|
|
|
| [1] 唐立松,张佳宝,程心俊,等.干旱区绿洲荒漠交错带土地退化及生态重建[J].干旱区研究,2002,19(3):44-48.[2] 王蕙,赵文智,常学向.黑河中游荒漠绿洲过渡带土壤水分与植被空间变异[J].生态学报,2007,27(5):1731-1739.[3] 赵成义,王玉朝,李国振,等.荒漠-绿洲边缘区研究[J].水土保持学报,2001,15(3):93-97.[4] Su Y Z,Zhao W Z,Su P X,et al.Ecological effects of desertification control and desertified land reclamation in an oasis-desert ecotone in an arid region:a case study in Hexi Corridor,northwest China[J].Ecological Engineering,2007,29:117-124.[5] Tengberg A.Nebkha dunes as indicators of wind erosionand degradation in the Sahel zone of Burina Faso[J].Journal of Arid Environments,1995,30:265-282.[6] 岳兴玲,哈斯,庄燕美,等.沙质草原灌丛沙堆研究综述[J].中国沙漠,2005,25(5):738-743.[7] 武胜利,李志忠,肖晨曦,等.灌丛沙堆的研究进展与意义[J].中国沙漠,2006,26(5):734-737.[8] 王升堂,邹学勇,张春来,等.民勤绿洲边缘带灌丛沙丘防风作用研究[J].地理科学,2007,27(1):104-108.[9] Tengberg A,Faso B A.A compararative analysis of nebkhas in central Tunisia and northern Burkina Faso[J].Geomorphology,1998,22:181-192.[10] Hesp P,McLachlan A. Morphology,dynamics,ecologyand faun a of A rctotheca populifolia and Gazania regions regens nabkha dunes[J].Journal of Arid Environments,2000,44:155-172.[11] Langford R P.Nabkha (coppice dune) fields of southcentral New Mexico,USA[J].Journal of Arid Environments,2000,46:25-41.[12] Dougill A J,Thomas A D.Nebkha dunes in the Molopo Bas in,South Africa and Botswana:formation controls and their validity as indicators of soil degradation[J].Journal of Arid Environments,2002,50:413-428.[13] 杜建会,严平,丁连刚,等.民勤绿洲不同演化阶段白刺灌丛沙堆表面土壤理化性质研究[J].中国沙漠,2009,29(2):248-252.[14] 王兵,崔向慧.民勤绿洲-荒漠过渡区水量平衡规律研究[J].生态学报,2004,24(2):235-240.[15] 杨自辉,高志海.荒漠绿洲边缘降水和地下水对白刺群落消长的影响[J].应用生态学报,2000,11(6):923-926.[16] 李昌龙,李茂哉,汪杰,等.绿洲边缘白刺林退化植被恢复与重建技术研究[J].干旱区资源与环境,2005,19(1):167-171.[17] 杜建会,严平,俄有浩.甘肃民勤不同演化阶段白刺灌丛沙堆分布格局与特征[J].生态学杂志,2007,26(8):1165-1170.[18] 刘冰,赵文智.荒漠绿洲过渡带泡泡刺灌丛沙堆形态特征及其空间异质性[J].应用生态学报,2007,18(12):2814-2820.[19] 彭飞,王涛,刘立超,等.民勤荒漠绿洲过渡带白刺灌丛沙堆演化阶段及其空间格局[J].中国沙漠,2012,32(3):593-599.[20] 赵明,詹科杰,杨自辉,等.民勤沙漠-绿洲低空沙尘暴结构特征研究[J].中国科学:地球科学,2011,41(2):234-242.[21] 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,2008,31(6):926-932.[22] Digglep J.Statistical Analysis of Spatial Point Patterns[M].New York,USA:Academic Press,1983.[23] Besag J,Newell J .Comment on modelling spatial patterns by B.D.Ripley[J].Journal of the Royal Statistical Society:Series B,1991,51:1932-2195.[24] 朱震达.中国西北干旱及半干旱地区沙丘分类问题[M]//中国科学院治沙队.治沙研究(第四号).北京:科学出版社,1962:31-47.[25] Muhtar Qong,Hiroki Takamura,Mijit Hudaberdi.Formation and internal structure of Tamarix cones in the Taklimakan Desert[J].Journal of Arid Environments,2002(50):81-97.[26] Hesp P A.The formation of shadow dunes[J].Journal of Sedimentary Petrology,1981,51:101-112.[27] 李振山,倪晋仁.风沙流研究的历史、现状及其趋势[J].干旱区资源与环境,1998,12(3):89-96.[28] 刘贤万.实验风沙物理与风沙工程学[M].北京:科学出版社,1995.[29] 杨帆,王雪芹,何清,等.绿洲-沙漠过渡带柽柳灌丛沙堆形态特征及空间分布格局[J].干旱区研究,2014,31(3):556-563.[30] 高永,党晓宏,虞毅,等.乌兰布和沙漠东南缘白沙蒿(Artemisia sphaerocephala)灌丛沙堆形态特征与固沙能力[J].中国沙漠,2015,35(1):1-6. |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
2015, Vol. 35 
