干旱区生态环境知识资源中心(Arid): 阿拉善荒漠区土壤水分的动态变化及其对主要灌木生长发育的影响

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	阿拉善荒漠区土壤水分的动态变化及其对主要灌木生长发育的影响
其他题名	Changes of Soil Moisture and Its Impact on Desert Shrubs in Alashan Desert
	郝璐 1; 黄玲玲 2; 张辉远 3
来源期刊	中国农业气象
ISSN	1000-6362
出版年	2012
卷号	33 期号:1 页码:59-65
中文摘要	基于孪井滩牧业气象试验站25a(1981-2005年)连续定位观测资料，对阿拉善主要荒漠天然灌木的生育期与产量变化趋势、土壤水分变化趋势及其对灌木的影响进行分析。结果表明，浅层与深层土壤含水率均呈下降趋势，其中10-20cm浅层下降趋势更为明显(P<0.05)；5种荒漠灌木的返青期、开花期以及黄枯期均有提前趋势，其中黄枯期提前尤为明显，返青期次之；5种荒漠灌木的干重和鲜重也均有明显下降趋势，与干重相比，鲜重下降更为明显。相关分析结果表明，土壤含水率与灌木生育期以及干鲜重的相关性因不同时段和不同灌木品种而异，土壤水分主要影响返青期，土壤含水率越大，返青期越早。30-50cm土层土壤含水率的变化相对较稳定，成为影响灌木返青期的主要土层；开花期和黄枯期对水分变化没有显著反应；10-20cm浅土层土壤水分对荒漠灌木的干鲜重影响最为显著；荒漠灌木干鲜重与上一年不同土层土壤含水率的相关性明显好于当年。无论是深层还是浅层土壤含水率，与干重的相关性均比鲜重小。
英文摘要	Based on 25 years(1981-2005) of continuous positioning observation data on desert shrub in Xilingaole area of Alashan league in Inner Mongolia,by M-K trend method and correlation method,the growing periods and yield trends of the 5 main species of desert shrubs,soil moisture trends,and the relationship between them were analyzed.The results showed that the soil moisture,especially that of 10-20cm soil layer decreased obviously(P<0.05).Compared with 10-30cm,the soil moisture of 30-50cm soil layer was relatively stable.During 1981-2005,the reviving date,flowering and withering date of the 5 species of desert shrubs all had a ahead trend,especially for withering,reviving on the second,which made the growing length of the 5 desert shrubs reduced.The fresh weight of the 5 species of desert shrubs was significantly decreased.Compared with dry weight,fresh weight decreased more obvious.Soil water content mainly affected the reviving date of the 5 desert shrubs.The higher soil water content was,the earlier reviving date.The 30-50cm soil layer was the main layer affecting shrubs reviving due to its relatively stable.The 10-20cm soil layer had a significant impact on dry weight and fresh weight of desert shrubs.The correlation of dry weight,fresh weight and average soil moisture of last year was significant than that of the current year,indicating that dry weight and fresh weight of desert shrubs more closely related to pre-soil moisture.
中文关键词	荒漠灌木 ; 土壤含水率 ; 发育期 ; 干鲜重 ; 孪井滩
英文关键词	Desert shrub Soil water content Growing period Fresh and dry weight Luanjingtan
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:4452517
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228961
作者单位	1.南京信息工程大学应用气象学院, 江苏省农业气象重点实验室, 南京, 江苏 210044, 中国; 2.江苏省金坛市气象局, 金坛, 213200; 3.阿拉善盟孪井滩牧业气象试验站, 阿拉善左旗, 750300
推荐引用方式 GB/T 7714	郝璐,黄玲玲,张辉远. 阿拉善荒漠区土壤水分的动态变化及其对主要灌木生长发育的影响[J],2012,33(1):59-65.
APA	郝璐,黄玲玲,&张辉远.(2012).阿拉善荒漠区土壤水分的动态变化及其对主要灌木生长发育的影响.中国农业气象,33(1),59-65.
MLA	郝璐,et al."阿拉善荒漠区土壤水分的动态变化及其对主要灌木生长发育的影响".中国农业气象 33.1(2012):59-65.