HAO Wen-fang,DU Feng,CHEN Cun-gen,et al.Spatial and Temporal Variability of Soil Moisture and Bulk Density of Abandoned Land in Loess Hilly Region of Northern Shaanxi[J].Northern Horticulture,2013,37(13):192-197.
陕北黄土丘陵区撂荒地土壤含水量和土壤容重的时空变异特征
- Title:
- Spatial and Temporal Variability of Soil Moisture and Bulk Density of Abandoned Land in Loess Hilly Region of Northern Shaanxi
- 文章编号:
- 1001-0009(2013)13-0192-06
- Keywords:
- loess hilly region of Northern Shaanxi; abandoned land; soil moisture; soil bulk density; spatial and temporal variability
- 分类号:
- S 152
- 文献标志码:
- A
- 摘要:
- 以陕北黄土丘陵区30个撂荒地为研究对象,采用空间序列代时间系列方法,分析了撂荒地土壤含水量的月动态、年际变化以及土壤容重的时间变异特征。结果表明:撂荒演替使得土壤容重变小;在垂直剖面上,随着土层深度的加深,土壤含水量呈现逐渐增加的趋势;撂荒地立地间土壤含水量变化趋势为:阴坡>半阴坡>半阳坡>阳坡;撂荒地土壤含水量月变化趋势为:7月>8月>9月>10月>5月>6月;土壤含水量的年际动态为2005年土壤含水量高于2006年和2007年。3个年份的共同趋势为:撂荒演替前期,土壤含水量较高;随着演替时间的延长,土壤含水量呈下降趋势。
- Abstract:
- With 30 abandoned lands in hilly area in region of Northern Shaanxi as experiment object,during their natural recovery process,spatial sequence generation of timeseries were used,the monthly and yearly alteration of their soil moisture and the temporal variability of their soil bulk was analyzed.The results showed that the abandoned arable land made the soil bulk density become smaller;in the vertical profile,soil moisture increased with the increase of the soil depth;the changing tendency of soil moisture of abandoned arable land was shady>semi shady>semi sunny slope>sunny;monthly changing tendency of soil moisture of abandoned arable land was July>August>September>October>May>June;the inter annual dynamics of soil water content was that soil moisture of 2005 was higher than that of 2006 and 2007.In the three years from 2005 to 2007,the soil moisture was higher in the early succession stage,then decreased.
参考文献/References:
[1]中国科学院南京土壤研究所土壤物理研究室.土壤物理性质测定法[M].北京:科学出版社,1978.
备注/Memo
第一作者简介:郝文芳(1968-),女,陕西西乡人,博士,副教授,现主要从事恢复生态学和植物生理生态学等研究工作。E-mail:haowenfang2002@tom.com.