JI Sheng-xun,LIU Yu-tao,DONG Zhi,et al.Variations of Wind Erosion and Soil Physicochemical Properties in Artificial Afforestation with Different Years in Yellow River Flood Plain[J].Research of Soil and Water Conservation,2011,18(03):158-161,167.
黄泛平原风沙区不同造林年限林地土壤风蚀与理化性质的变化
- Title:
- Variations of Wind Erosion and Soil Physicochemical Properties in Artificial Afforestation with Different Years in Yellow River Flood Plain
- Keywords:
- The Yellow River flood plain; artificial afforestation; planting years; soil physicochemical property; soil erosion
- 分类号:
- S157;X727.23
- 摘要:
- 采用空间代替时间的方法，研究了黄泛平原风沙区不同造林年限林地的土壤风蚀和理化性质。结果表明：土壤风蚀深度随着造林年限的延长而降低，1a、3a造林地整体呈风蚀状态，分属于中度与轻度风蚀，5a造林地蚀积平衡，为微度风蚀，8a造林地以堆积为主。各林地在不同月份间的蚀积状况不同，1a造林地各月均为风蚀状态，8a造林地仅在1月、2月有轻微风蚀。随着造林年限的增加，土壤容重、非毛管孔隙度呈降低趋势，而总孔隙度、毛管孔隙度、土壤含水量、有机质含量呈增大趋势，但造林5a后，这一趋势减缓并趋于稳定。林地内微地形起伏造成行间风蚀深度、容重、非毛管孔隙大于树下，总孔隙度、毛管孔隙度和含水量小于树下。该研究可为林地经营及其风蚀防治、土壤改良提供依据。
- Abstract:
- The wind erosion and soil physicochemical properties in afforestation with different years in the Yellow River Floodplain were measured by using the method of ’space replacing time’.The results showed that the depth of soil wind erosion decreased with increasing of the years of afforestation.Wind erosion is the mainly state in the 1-year and 3-year forest land,which belongs to middle degree erosion and light erosion.Erosion-deposition equilibrium was presented by 5-year forestland,slight erosion.Sand accumulated in 8-year forestland.There were different erosion and deposition state of different forestland in different month.Wind erosion is the mainly status in every month in the 1-year forestland,however,in the 8-year forestland,light erosion is the most serious status just in January and February.Soil bulk density and non-capillary porosity reduced with the increase of the years of afforestation.But total porosity,capillary porosity,soil water content and organic matter content appeared an increasing trend with the increase of afforestation years.However,this trend of the afforestation years was slackening off and then reaching a plateau after 5 years.Wind erosion depth,soil bulk density,non-capillary porosity in the middle rows of trees are higher than that of under the tree caused by the terrain,and total porosity capillary porosity and water content appears reserved trend.The results of this research could provide evidence for forest management,wind erosion control and soil improvement.
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备注/Memo
收稿日期:2010-11-6;改回日期:2010-11-23。
基金项目:国家自然科学基金（30972420）;山东省中青年优秀科学家基金“山东省沙化区土地沙化机理与生态经济型整治技术的研究”
作者简介:姬生勋（1980- ），男，山东聊城市莘县人，硕士研究生，主要从事沙地治理与林业生态工程研究。E-mail：jishengxun@163.com
通讯作者:董智（1971- ），男，内蒙古乌兰察布市人，博士，副教授，主要从事荒漠化与道路灾害防治研究。E-mai：nmgdz@163.com