[1]HE Jing-li,LI Jin-rong,XING En-de,et al.Study on Spatial Pattern of Potential Wind Erosion of Soil in Semi-arid Steppe[J].Research of Soil and Water Conservation,2012,19(05):12-15,22.
Copy
Study on Spatial Pattern of Potential Wind Erosion of Soil in Semi-arid Steppe
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
19
Number of periods:
2012 05
Page number:
12-15,22
Column:
Public date:
2012-10-20
- Title:
- Study on Spatial Pattern of Potential Wind Erosion of Soil in Semi-arid Steppe
- Keywords:
- semi arid steppe; wind erosion; spatial pattern
- CLC:
- S157.1
- DOI:
- -
- Abstract:
- The majority of China in the arid and semi arid regions suffered from invasion of severe erosion. Wind erosion can lead to soil loss and soil fertility decline, ultimately cause the desertification. Semi arid grassland desertification problems have become increasingly prominent, resulting in dust storms and other frequency of weather disasters, and leading to a lot of inconveniences to the production and people’s living. Based on the wind speed inducing soil wind erosion, aridity, vegetation index, relief amplitude, soil erodibility and grazing pressure, the spatial distribution pattern of soil wind erosion of semi arid grasslands in Damao County was studied by using GIS technology through principal component analysis. The results showed that the potential of wind erosion index presented high-low-high trend from south to north. In northern Damao, soil erosion was mainly affected by wind speed, aridity and vegetation index;central area of wind erosion was mainly affected by the level of relief amplitude, effect of relief amplitude on wind reduction was enhanced, the wind speed was reduced, and the change in soil erodibility and aridity was relatively low, so wind erosion index was low. Southern soil wind erosion was mainly affected by grazing pressure, spring is the season with low grass and vegetation coverage, and livestock density was relatively large, grazing on pasture pressure, soil wind erosion was very serious. Temporal and spatial heterogeneity of each factor influencing wind erosion was the main reason leading to spatial and temporal heterogeneity wind erosion in semi arid prairie. The main factors influencing spatial heterogeneity of wind erosion in semi arid steppe were wind speed, drought and vegetation index, the next factors were the relief amplitude and soil erodibility, and grazing pressure was one of the main human factors on soil wind erosion in semi arid steppe.
- References:
-
[1] 张国平, 张增祥, 刘纪远.中国土壤风力侵蚀空间格局及驱动因子分析[J].地理学报, 2001, 56(2):146-158.
[2] 赵焕勋, 王学东.内蒙古土壤侵蚀灾害研究[J].干旱区资源与环境, 1994, 8(4):35-42.
[3] Chepil W S, Hiddoway F H, Armbrust D V. Climatic factor estimating wind erodibility fields[J]. Journal of Soil and Water Conservation, 1962, 17(4):162-165.
[4] 董玉祥, 康国定.中国干旱半干旱地区风蚀气候侵蚀力的计算与分析[J].水土保持学报, 1994, 8(3):1-7.
[5] 张国平, 刘纪远, 张增祥, 等.中国风蚀景观面积变化与地表风场强度的关系[J].地理学报, 2002, 57(1):1-10.
[6] 孟猛, 倪健, 张治国.地理生态学的干燥度指数及其应用评述[J].植物生态学报, 2004, 28(6):853-861.
[7] 范一大.沙尘灾害遥感监测模式及其形成机制研究:以中国北方沙尘暴灾害形成过程为例[D].北京:北京师范大学, 2003.
[8] 马月存, 陈源泉, 隋鹏一, 等.土壤风蚀影响因子与防治技术[J].生态学杂志, 2006, 25(11):1390-139.
[9] 涂汉明, 刘振东.中国地势起伏度研究[J].测绘学报, 1991, 20(4):311-319.[ZK)]
[10] 唐飞, 陈曦, 程维明, 等.基于DEM的准噶尔盆地及其西北山区地势起伏度研究[J].干旱区地理, 2006, 29(3):388-392.
[11] Middleton H E. Properties of soils which influence soil erosion[J]. USDSA Technical Bulletin, 1930, 173:1-16.
[12] 宋阳, 刘连友, 严平, 等.土壤可蚀性研究述评[J].干旱区地理, 2006, 29(1):124-131.
[13] Chepil W S. Measurement of wind erosiveness of soils by dry sieving procedure[J]. Sci. Agr., 1942, 23:154-160.
[14] Fryrear D W, Krammes C A.土壤风蚀度的综合计算[J].水土保持科技情报, 1995(2):38-41.
[15] 殷海军.RWEQ模型的改进及其在风沙区的应用研究[D].北京:中国农业大学, 2010.
[16] 蔡永明, 张科利, 李双才.不同粒径制间土壤质地资料的转换问题研究[J].土壤学报, 2003, 40(4):511-517.
[17] 李玉宝.干旱半干旱区土壤风蚀评价方法[J].干旱区资源与环境, 2000, 14(2):48-52.
[18] 李振山.地形起伏对气流速度影响的风洞实验研究[J].水土保持研究, 1999, 6(4):75-79.
- Similar References:
Memo
-
Last Update:
1900-01-01