文献类型：期刊文献

中文题名：高寒沙区典型人工林土壤水分空间分布特征研究

英文题名：Study on spatial distribution characteristics of soil water in typical plantation of Alpine sandy land

作者：杨凯悦[1] 贾志清[1,2] 张立恒[1] 李清雪[1] 何凌仙子[1] 戴捷[1] 陈娟[1]

第一作者：杨凯悦

机构：[1]中国林业科学研究院荒漠化研究所;[2]青海共和荒漠生态系统定位观测研究站

年份：2019

卷号：0

期号：5

起止页码：88-94

中文期刊名：干旱区资源与环境

外文期刊名：Journal of Arid Land Resources and Environment

收录：北大核心:【北大核心2017】；CSSCI:【CSSCI2019_2020】；CSCD:【CSCD2019_2020】；

基金：国家自然科学基金(31670706);国家自然科学基金(31600585);林业科学技术推广项目([2017]20号)资助

语种：中文

中文关键词：高寒沙区;中间锦鸡儿;土壤水分;空间分布

外文关键词：Alpine sandy land;Caragana intermedia;soil water;spatial distribution

分类号：S714.2

摘要：揭示生长阶段以及土壤深度对于中间锦鸡儿(Caragana intermedia)人工林土壤水分分布的影响,对于解决植被的经营与巩固、重建与恢复等方面都具有重要意义。利用ECH2O土壤含水量监测系统对不同深度(10cm、20cm、30cm、40cm、60cm、90cm、120cm、150cm)不同生长阶段(3a、5a、16a、30a)中间锦鸡儿人工林土壤水分进行连续监测,检验土壤层次之间的差异显著性和相关性并进行空间插值,分析不同深度的土壤水分的分布状况。测定期间,3a、5a、16a、30a不同深度的VWC均值分别在15. 50-38. 25%、16. 00-42. 38%、15. 15-38. 09%、18. 28-42. 05%之间。四个不同生长阶段的人工林中,10cm和20cm表现为中等变异性,60cm以下深层土壤的VWC表现为弱变异性。不同深度的土壤水分都具有显著差异性和相关性。垂直分布上,土壤水分表现为增大-减小-再增大的总体趋势,各层深度都具有显著的差异性和相关性,且相关性随着距离的增大而减小。土壤水分的变异性随着深度的增加而减小,表层土壤一般表现为中等变异,深层土壤一般表现为弱变异性。3a的土壤水分在垂直方向上波动性最大,30a最小。水平空间上,土壤表层水分随着林龄的增加而增加,而土壤深层深度随着深度的增加而减小。
The effects of Caragana intermedia plantation growth stage and soil depth on soil water distribution were revealed,which is of great significance to solve the management,consolidation,reconstruction and recovery of vegetation. The soil moistures in different depth( 10 cm,20cm,30 cm,40cm,60 cm,90cm,120 cm,and150cm) at different growth stages( 3a,5a,16 a,and 30a) were monitored continuously by ECH2 O soil moisture monitoring system,and significant difference and correlation between depth was tested. and space interpolation was carried out. The mean VWC values of 3a,5a,16 a and 30 a of Caragana intermedia plantation in the Gonghe Basin were 15. 50-38. 25%,16. 00-42. 38%,15. 15-38. 09%,and 18. 28-42. 05%,respectively. In the four growth stages of plantation,soil water in the depth of 10 cm and 20 cm showed moderate variability,and the other depths of VWC showed weak variability. The soil moistures in different depths had significant difference and correlation. The vertical distribution of soil moisture showed an overall trend of increasing,decreasing and then increasing. There was significant difference and correlation between the depth of each layer,and the correlation decreased with the increase of distance. The variability of soil moisture decreased with the increase of depth. The surface soil generally showed moderate variability. The deep soil generally showed weak variability and the strongest stability. In addition,the soil moisture in 3a was the most fluctuant in the vertical direction,and the 30 a was the smallest. In the horizontal space,the soil surface moisture increased with the increase of forest age,while the depth of soil decreased with the increase of depth.