PDF Download

[1]ZHANG Ke-xin,LIU Pu-xing,HUO Hua-li,et al.The Spatial Variations of Soil Water Content under the Populus euphratica in Dunhuang Oasis in Hexi Corridor[J].Research of Soil and Water Conservation,2010,17(05):109-113.

Copy

The Spatial Variations of Soil Water Content under the Populus euphratica in Dunhuang Oasis in Hexi Corridor

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 17 Number of periods: 2010 05 Page number: 109-113 Column: Public date: 2010-10-20

Title:: The Spatial Variations of Soil Water Content under the Populus euphratica in Dunhuang Oasis in Hexi Corridor

Author(s):: ZHANG Ke-xin¹, LIU Pu-xing¹, HUO Hua-li¹, WU San-xiong²; 1. College of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, China;
2. Administrative Bureau of the West Lake National Nature Reserve in Dunhuang of Gansu, Dunhuang, Gansu 736200, China

Keywords:: Dunhuang Oasis; populous euphratica; soil water content; IDW interpolation; spatial variability

CLC:: S715.5

DOI:: -

Abstract:: The spatial variability of soil water content is remarkable. Here we used traditional statistics and semivariance analysis of geostatistics to study the spatial variability of the soil water content under the natural populus euphratica forests in the west lake nature reserve of Dunhuang oasis. The results showed that there are about 15-20 cm dry sand layers in most parts of land. That makes the surface soil water content at the lowest level, between 0.8%～4.49%. The soil water content is raised from upper to lower, but not very obvious at different layers. The soil water content changed sharply in 0-60 cm and changed moderately in 60-120 cm. The variation efficient of the soil water content is obviously different in different soil and becomes smaller with the depth increasing. The change is mainly relative to climate, soil texture and tree-age and so on. Using the GIS (Inverse Distance Weighted, IDW) interpolation method analysis, the soil water content of study area exist obvious space differences and strong comparability. Each layer is gradually increased spatial pattern from west to east. It was consisted with the topographical features of the west of the Kumtag desert and the Lop Nor region and the east of Dunhuang oasis.

References:: [1] 李禄军,蒋志荣,车克钧,等.绿洲-荒漠交错带不同沙丘土壤水分时空动态变化规律[J].水土保持学报,2007,21(1):123-127.
[2] 王军,傅伯杰,邱扬,等.黄土丘陵小流域土壤水分的时空变异特征:半变异函数[J].地理学报,2000,55(4):428-438.
[3] 邱扬,傅伯杰,王军,等.土壤水分时空变异及其与环境因子的关系[J].生态学杂志,2007,26(1):100-107.
[4] 冉有华,李新,王维真,等.黑河流域临泽盐碱化草地网格尺度多层土壤水分时空稳定性分析[J].地球科学进展,2007,24(7):817-824.
[5] 常学向,赵爱芬,赵文智,等.黑河中游荒漠绿洲区免灌植被土壤水分状况[J].水土保持学报,2003,17(2):126-129.
[6] 马海艳,龚家栋,王根绪,等.干旱区不同荒漠植被土壤水分的时空变化特征分析[J].水土保持研究,2005,12 (6):231-234.
[7] 肖德安,王世杰.土壤水研究进展与方向评述[J].生态环境学报,2009,18(3):1182-1188.
[8] 魏庆莒.胡杨[M].北京:中国林业出版社,1990:1-17.
[9] 唐红莉.祁连山林区土壤水分生态研究[D].呼和浩特:内蒙古农业大学,2003.
[10] 徐建华.现代地理学中的研究方法[M].北京:高等教育出版社,2002.
[11] 张正铎.空间变异理论及应用[M].北京:科学出版社,2005.
[12] 敦煌市编纂委员.敦煌市志[M].北京,新华出版社,1994.
[13] 马兴华,王桑.甘肃疏勒河流域植被退化与地下水位及矿化度的关系[J].甘肃林业科技,2005,30(2):53-55.
[14] 豪树奇.额济纳绿洲土壤水分状况的研究[D].呼和浩特:内蒙古农业大学,2005.

Similar References:

Memo

Last Update: 1900-01-01