干旱区生态环境知识资源中心(Arid): 半干旱黄土丘陵区土壤水分生长季动态分析

Arid

	半干旱黄土丘陵区土壤水分生长季动态分析
其他题名	Analysis of temporal variation of soil water in a growing season in semi - arid loess hilly area
	徐志尧; 张钦弟; 杨磊
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2018
卷号	32 期号:3 页码:145-151
中文摘要	土壤水分是半干旱地区植被生长的重要水分来源,尤其是深层土壤水分对黄土高原人工植被恢复起着至关重要的作用,阐明深层土壤水分的季节动态对揭示人类活动影响下的植被与水分的相互作用关系、维持黄土高原植被恢复的可持续性有重要的科学意义。文中基于半干旱黄土丘陵区8种典型植被0- 1.8m土壤水分动态监测和0- 5m深度土壤水分季节比较,研究发现: 1)植被类型对土壤水分及其剖面分布具有显著影响,且不同植被土壤水分季节变化均随深度增加而减弱; 2)生长季中不同植被土壤水分都呈现出先减少再增加的变化,不同植被在不同生长阶段中降雨对土壤水分的补充有所不同; 3)人工植被深层土壤水分没有显著的季节变化,表明人工植被深层土壤水分已难以受到当季降水补充,维持植被生长的功能可能在逐渐减弱,黄土高原现阶段植被恢复需要平衡维持植被生长与土壤水分可持续利用。
英文摘要	Soil and water are the important sources of vegetation in arid and semi - arid areas. In particular, deep soil water plays a critical role in large - scale human - introduced vegetation restoration in the Loess Plateau. Therefore,it is a critical issue to study the seasonal dynamics of deep soil water content,in order to identify the interactions between vegetation and water under influence of human activities,and achieve sustainability of vegetation restoration. In this study,deep soil water contents of eight representative vegetation types in the temporal variability between in depth of 0 - 1.8m and 0 - 5m in growing season were compared. The results showed that: (1) Vegetation significantly affected sectional distribution of soil water content; yet temporal variability of the soil water content decreased from surface layer to deep depth. (2) Soil water contents of different vegetations decreased early in growing season,and then increased; whereas infiltration of soil water from precipitation differed in their growing season in different vegetation. (3) No obvious seasonal variation in deep soil water was found in introduced - vegetation. This indicated that deep soil water could provide limited water for introduced - vegetation under normal precipitation. Thus,vegetation restrain should balance the vegetation growth and sustainable soil water use in the Loess Plateau.
中文关键词	黄土高原 ; 土壤水分 ; 季节动态 ; 植被恢复 ; 水源涵养
英文关键词	Loess Plateau soil water seasonal dynamics vegetation restoration water conservation
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Agriculture
WOS研究方向	Agriculture
CSCD记录号	CSCD:6211961
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237698
作者单位	徐志尧, 中国科学院生态环境研究中心;;山西师范大学生命科学学院, 城市与区域生态国家重点实验室;;, ;;临汾, 北京;; 100085;;041004, 中国.; 张钦弟, 山西师范大学生命科学学院, 临汾, 山西 041004, 中国.; 杨磊, 中国科学院生态环境研究中心, 城市与区域生态国家重点实验室, 北京 100085, 中国.
推荐引用方式 GB/T 7714	徐志尧,张钦弟,杨磊. 半干旱黄土丘陵区土壤水分生长季动态分析[J],2018,32(3):145-151.
APA	徐志尧,张钦弟,&杨磊.(2018).半干旱黄土丘陵区土壤水分生长季动态分析.干旱区资源与环境,32(3),145-151.
MLA	徐志尧,et al."半干旱黄土丘陵区土壤水分生长季动态分析".干旱区资源与环境 32.3(2018):145-151.