干旱区生态环境知识资源中心(Arid): 水分因素对绿洲荒漠过渡带土壤氮矿化的影响

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	水分因素对绿洲荒漠过渡带土壤氮矿化的影响
其他题名	Effects of Moisture Factor on Soil Nitrogen Mineralization in Oasis-desert Ecotone
	柳维扬 1; 高艳红 2; 王家强 1; 彭杰 1; 吕双庆 1
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2015
卷号	29 期号:5 页码:89-94
中文摘要	通过树脂芯原位培养试验,分析水分因素对塔里木绿洲荒漠过渡带3种不同植被覆盖度(LCD:0~0.2;MCD:0.2~0.4;HCD:0.4~0.6)土壤矿质氮含量影响及氮矿化速率变化。结果表明,水分对土壤氮矿化作用有明显影响,土壤净氮矿化速率与土壤水分有明显相关性,3种植被覆盖度类型的剖面水分变化和净氮矿化速率呈正相关,相关系数LCD是0.866 9(P<0.01),MCD是0.647 9(P<0.05),HCD是0.594 0(P<0.05);测定周期内绿洲荒漠过渡带土壤平均净氮矿化速率,LCD为0.334 kg/(hm~2·d),MCD为1.010 kg/(hm~2·d),HCD为0.998 kg/(hm~2·d);该区域土壤水分变化是影响氮矿化的主要因素之一,说明在极端干旱条件下,水分控制氮矿化作用,但随植被覆盖度递增土壤含水量增加,水分因素对土壤氮矿化作用逐渐递减。
英文摘要	The effects of moisture factor on soil mineral nitrogen content and nitrogen mineralization rate under 3 different vegetation coverage(LCD:0~0.2;MCD:0.2~0.4;HCD:0.4~0.6)in oasis-desert ecotone in Tarim Basin were studied in an incubation experiment by using resin-core technique.The major results showed that soil moisture had the obvious effect on soil nitrogen mineralization,and there was significant correlation between soil moisture and soil net nitrogen mineralization rate.Moisture variation of soil profiles under 3 different vegetation coverage had positive correlation with soil net nitrogen mineralization rate,and the correlation coefficient was 0.866 9 in LCD treatment(P<0.01),0.647 9 in MCD treatment(P<0.05)and 0.594 0 in HCD treatment(P<0.05).Soil average net nitrogen mineralization rate in a cycle in oasis-desert ecotone was determined,which was 0.334 kg/(hm~2·d), 1.010 kg/(hm~2·d) and 0.998 kg/(hm~2·d)in treatments of LCD, MCD and HCD, respectively.Therefore,soil moisture change in this region is one of important factors influencing nitrogen mineralization.Under extreme drought condition,soil moisture controls the nitrogen mineralization,but with the gradual increase of vegetation coverage and the increase of soil moisture content,the effects of moisture factors on soil nitrogen mineralization decreases gradually.
中文关键词	水分因素 ; 绿洲荒漠过渡带 ; 土壤氮净矿化 ; 树脂芯法
英文关键词	moisture factor oasis-desert ecotone soil net nitrogen mineralization resin-core technique
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:5548997
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233358
作者单位	1.塔里木大学植物科学学院, 阿拉尔, 新疆 843300, 中国; 2.塔里木大学生命科学学院, 阿拉尔, 新疆 843300, 中国
推荐引用方式 GB/T 7714	柳维扬,高艳红,王家强,等. 水分因素对绿洲荒漠过渡带土壤氮矿化的影响[J],2015,29(5):89-94.
APA	柳维扬,高艳红,王家强,彭杰,&吕双庆.(2015).水分因素对绿洲荒漠过渡带土壤氮矿化的影响.水土保持学报,29(5),89-94.
MLA	柳维扬,et al."水分因素对绿洲荒漠过渡带土壤氮矿化的影响".水土保持学报 29.5(2015):89-94.