干旱区生态环境知识资源中心(Arid): 黄土丘陵半干旱区人工林迹地土壤水分恢复研究

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	黄土丘陵半干旱区人工林迹地土壤水分恢复研究
其他题名	Soil water restoration of different land use after artificial forest in the semi-arid area of Loess Plateau
	王志强; 刘宝元; 王旭艳; 韩艳锋
ISSN	1002-6819
出版年	2007
卷号	23 期号:11 页码:77-83
中文摘要	为了研究黄土丘陵半干旱区人工林迹地土壤水分恢复情况,该文以正在生长的人工林土壤水分含量为人工林迹地土壤水分恢复的起点,并分别以持续农地和持续放牧荒坡的土壤含水量为林后农地和草地土壤水分恢复的上限,对位于黄土丘陵半干旱区绥德县境内的人工林迹地土壤水分恢复情况进行了研究.结果表明,人工林死后的放牧荒坡在20a的时间里,其土壤水分没有补偿;人工林死后的保护草地土壤水分有微弱恢复迹象,但年恢复速度在0.5～3.7 mm之间,以这样的速度恢复到持续放牧荒坡的土壤含水量,至少需要150a以上;林后农地土壤含水量有恢复趋势,年平均恢复速度为15 mm左右,其土壤含水量要恢复到持续农地当前的水平,大约需要40a的时间.研究结果揭示了黄土丘陵半干旱区人工林对土壤水分影响的长期性,并为制定可持续的土地利用规划提供借鉴资料.
英文摘要	Planted forests can deplete deep soil water,forming an obstacle to sustainable land use in the semi-arid area of Loess Plateau.The purpose of this study was to examine effects of grazing and cropping on replenishment of deep soil water where forest plantations had depleted soil moisture at depths of 2~9.9 m.We compared soil moisture on plantation plots with that on plots where plantations were replaced by crops,grazed grassland,and ungrazed grassland seperately.Over a 20-year period there was no increase in soil water content in the grazed grassland at depths of 2~9.9 m.There was a small increase(0.5~3.7 mm/a) in soil water content in the protected grassland,however the slow rate of increase suggests that at least 150 years would be needed for ungrazed grassland soils to regain water content similar to that present prior to planting trees.Recharge of deep soil moisture was faster in cropland(15 mm/a),but at this rate it would still take about 40 years to restore cropland soil water content to pre-plantation conditions.The results of this study reveal long-term ecological effects of artificial forest in this water stressed area and give useful information to sustainable land use planning.
中文关键词	人工林 ; 人工林迹地 ; 土壤水分 ; 土壤水分恢复
英文关键词	artificial forest artificial forest slash soil water content soil water restoration
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:3005453
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/221259
作者单位	北京师范大学地理学与遥感科学学院, 地表过程与资源生态国家重点实验室, 北京 100875, 中国
推荐引用方式 GB/T 7714	王志强,刘宝元,王旭艳,等. 黄土丘陵半干旱区人工林迹地土壤水分恢复研究[J]. 北京师范大学,2007,23(11):77-83.
APA	王志强,刘宝元,王旭艳,&韩艳锋.(2007).黄土丘陵半干旱区人工林迹地土壤水分恢复研究.,23(11),77-83.
MLA	王志强,et al."黄土丘陵半干旱区人工林迹地土壤水分恢复研究".23.11(2007):77-83.