干旱区生态环境知识资源中心(Arid): 不同年限红柳恢复川西北高寒沙地对土壤团聚体和有机碳的影响

Arid

	不同年限红柳恢复川西北高寒沙地对土壤团聚体和有机碳的影响
其他题名	Effects of Different Age of Alpine Desertification Land Planted Branchy Tamarisk on Soil Aggregates and Organic Carbon in Northwestern Sichuan
	江仁涛; 李富程; 沈凇涛
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2018
卷号	32 期号:1 页码:197-203
中文摘要	利用土壤大团聚体含量(R0.25)、平均重量直径(MWD)、几何平均直径(GMD)、团聚体破坏率(PAD)和团聚体对有机碳贡献率(F)指标,研究不同时间尺度红柳恢复川西北高寒沙地对土壤团聚体稳定性和有机碳分布的影响。结果表明:红柳不同恢复年限土壤机械稳定性团聚体和水稳性团聚体都以微团聚体(<0.25mm)组成为主,随着恢复年限增加,表层(020cm)>2,0.5~2mm粒级土壤团聚体含量显著增加,表层(020cm)土壤团聚体R_(0.25)、MWD和GMD表现为0年<5年<10年<15年,PAD呈现相反的特征;红柳恢复引起表层(020cm)土壤有机碳含量显著增加,随着恢复年限增加,>2,0.5~2mm粒级团聚体有机碳含量显著提高,>0.5mm粒级团聚体对土壤有机碳贡献率高达34%~60%;红柳恢复对亚表层(2040cm)土壤团聚体与有机碳分布特征影响不显著。研究表明土壤团聚体稳定性和有机碳指标可作为川西北高寒沙地土壤生态修复适应性指标,红柳恢复对该区沙化土壤改良具有重要作用。
英文摘要	The macro-aggregates content(R_(0.25)),mean weight diameter(MWD),geometric mean diameter (GMD),the percentage of aggregate destruction(PAD)and contribution rates of aggregates to organic carbon(F),which were selected to analyze the effects of different age of alpine desertification land planted branchy tamarisk on soil aggregates stability and organic carbon distribution in northwestern Sichuan.The results showed that soil mechanical stability aggregates and water-stable aggregates were mainly composed of micro-aggregates(<0.25 mm)in different restoration years of branchy tamarisk restoration pattern.With the increase of recovery period,soil surface(020 cm)>2,0.5~2 mm aggregates increased significantly, and the ranking of R_(0.25),MWD and GMD from low to high was:0 year<5 years<10 years<15 years, while PAD presented opposite trends.The planting of branchy tamarisk caused a significant increase in soil organic carbon content in the surface layer(020 cm).With the increase of recovery period,organic carbon content of>2,0.5~2 mm aggregates increased significantly,and the contribution rates of>0.5 mm aggregates to soil organic carbon was 34%~60%.The effect of planting of branchy tamarisk to soil aggregates and organic carbon on sub-surface layer(2040 cm)was not significant.The results indicated that soil aggregates stability and organic carbon can be used as the adaptable index of soil ecological restoration in northwestern Sichuan,and the planting of branchy tamarisk has an important effect on improvement of desertification soil.
中文关键词	高寒草地 ; 沙漠化 ; 生态恢复 ; 土壤团聚体 ; 土壤有机碳
英文关键词	alpine grassland desertification ecological restoration soil aggregates soil organic carbon
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:6189326
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238302
作者单位	西南科技大学环境与资源学院, 绵阳, 四川 621010, 中国
推荐引用方式 GB/T 7714	江仁涛,李富程,沈凇涛. 不同年限红柳恢复川西北高寒沙地对土壤团聚体和有机碳的影响[J],2018,32(1):197-203.
APA	江仁涛,李富程,&沈凇涛.(2018).不同年限红柳恢复川西北高寒沙地对土壤团聚体和有机碳的影响.水土保持学报,32(1),197-203.
MLA	江仁涛,et al."不同年限红柳恢复川西北高寒沙地对土壤团聚体和有机碳的影响".水土保持学报 32.1(2018):197-203.