干旱区生态环境知识资源中心(Arid): 黑河中游不同景观类型土壤有机质与含水率变化特征

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	黑河中游不同景观类型土壤有机质与含水率变化特征
其他题名	Variation characteristics of soil organic matter and water content in different types of landscape in the middle reaches of Heihe River
	周川; 胡广录; 邓丽媛; 李嘉楠
来源期刊	甘肃农业大学学报
ISSN	1003-4315
出版年	2021
卷号	56 期号:4 页码:126-135
中文摘要	【目的】探明黑河中游不同景观类型土壤有机质和土壤水分空间分布特征以及两者之间的相互关系,为该地区农业活动、植被选择提供相关依据.【方法】于2019年5~10月钻取不同景观类型0~100cm土层的土壤样品,研究土壤有机质与土壤含水率的变化特征,并采用相关分析法分析土壤有机质与土壤含水率之间的关系. 【结果】各个景观类型的土壤有机质随土层深度增加基本呈现增大-减小的趋势.除农田景观的土壤含水率随土层深度增加呈现减小-增大的变化趋势外,其他景观类型的土壤含水率随土层深度增加均呈现增大-减小-增大的变化趋势.河岸林、荒漠景观各土层的土壤有机质含量与土壤含水率均呈现负相关关系,其中河岸林景观0~10cm土层的负相关程度最高(R~2=0.919),而荒漠景观10~20cm土层的负相关程度最高(R~2=0.767);农田、荒漠-绿洲过渡带景观各土层的土壤有机质含量与土壤含水率均呈现正相关关系,其中农田景观10~20cm土层的正相关程度最高(R~2=0.959),而荒漠-绿洲过渡带景观20~40cm土层的正相关程度最高(R~2=0.871).【结论】黑河中游各景观类型的土壤有机质和土壤含水率在不同程度上受区域气候、土壤质地和人为活动的影响,存在时空异质特性,根据土壤有机质和土壤含水率变化特征,科学合理的实施农事活动和生态植被修复,对绿洲安全生产和可持续发展具有重要意义.
英文摘要	【Objective】The study aimed to clarify spatial distribution characteristics of soil organic matter and soil moisture and their relationship in different types of landscapes of middle-reaches Heihe River, providing relevant basis for agricultural activities and vegetation restoration in the region.【Method】From May to October 2019,we sampled the soil in 0~100cm layers of different landscape types,and measured soil organic matter and soil moisture content,followed by analyzing their variation characteristics and relationship. 【Result】The soil organic matter of each landscape type displayed a tendency to rise before falling with increased soil depth.The soil moisture content of farmland landscape showed a tendency to fall before rising with increased soil depth,and of other landscape types,it raised at first,then fell,and raised again with increased soil depth.The soil organic matter content was negatively correlated with soil moisture content of each soil layer in riparian forests and desert landscapes;for riparian forest landscape,the highest degree of negative correlation(R~2=0.919)occurred in the 0~10cm soil layer and for desert landscape,it occurred in the 10~20cm soil layer(R~2=0.767).In both farmland and desert-oasis transition zone landscape, the soil organic matter content of each soil layer was positively correlated to the soil moisture content of corresponding layer's;for farmland landscape,the highest degree of positive correlation occurred in the 10~20cm soil layer(R~2=0.959),and for the desert-oasis transition zone,it occurred in the 20~40cm soil layer(R~2=0.871).【Conclusion】Both soil organic matter and soil water content of different landscape types were affected to different extent by regional climate,soil texture and human activities,and hence they were temporally and spatially heterogeneous in the middle reaches of Heihe river.According to the characteristics of change in soil organic matter and soil moisture content,the scientific and reasonable implementation of agricultural activities and ecological vegetation restoration was of great significance to the safe production and sustainable development of oasis.
中文关键词	景观类型 ; 土壤有机质 ; 土壤含水率 ; 黑河中游
英文关键词	landscape type soil organic matter soil moisture middle reaches of Heihe
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Forestry
CSCD记录号	CSCD:7052293
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377609
作者单位	周川, 兰州交通大学环境与市政工程学院, 兰州, 甘肃 730070, 中国.; 胡广录, 兰州交通大学环境与市政工程学院, 兰州, 甘肃 730070, 中国.; 邓丽媛, 兰州交通大学环境与市政工程学院, 兰州, 甘肃 730070, 中国.; 李嘉楠, 甘肃省水土保持科学研究所, 兰州, 甘肃 730020, 中国.
推荐引用方式 GB/T 7714	周川,胡广录,邓丽媛,等. 黑河中游不同景观类型土壤有机质与含水率变化特征[J],2021,56(4):126-135.
APA	周川,胡广录,邓丽媛,&李嘉楠.(2021).黑河中游不同景观类型土壤有机质与含水率变化特征.甘肃农业大学学报,56(4),126-135.
MLA	周川,et al."黑河中游不同景观类型土壤有机质与含水率变化特征".甘肃农业大学学报 56.4(2021):126-135.