Degree of Soil Moisture Deficit of

FEI Hongyan; TONG Qian; WAN Chuanyu; PAN Ruopeng; HAN Fengpeng

doi:10.13870/j.cnki.stbcxb.2022.05.030

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Degree of Soil Moisture Deficit of

更新时间：2025-03-12

- Degree of Soil Moisture Deficit of
- Vol. 36, Issue 5, Pages: 240-246(2022)
- 作者机构：
  
  1. 西北农林科技大学资源环境学院, 黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西杨凌,712100
  2. 中科院水利部水土保持研究所, 水利部水土保持生态工程技术研究中心, 陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2022.05.030
  CLC： S152.7;S792.27
- Published：2022
- 稿件说明：
移动端阅览
FEI Hongyan, TONG Qian, WAN Chuanyu, et al. Degree of Soil Moisture Deficit of[J]. 2022, 36(5): 240-246.
DOI：

FEI Hongyan, TONG Qian, WAN Chuanyu, et al. Degree of Soil Moisture Deficit of[J]. 2022, 36(5): 240-246. DOI： 10.13870/j.cnki.stbcxb.2022.05.030.

摘要

通过定点监测刺槐林土壤水分含量

探究不同林龄刺槐林土壤水分分布与亏缺程度。采用空间代替时间的研究方法

选择10

40年人工刺槐林为研究对象

农地(0年)为对照

调查分析0—200 cm土层土壤水分分布情况。结果表明:各样地平均土壤含水量大小顺序为农地(18.80%)＞10年刺槐林(16.43%)＞15年刺槐林(15.47%)＞40年刺槐林(13.87%)＞25年刺槐林(13.38%);不同林龄刺槐林土壤水分均处于亏缺状态

随着林龄增加

土壤水分亏缺呈增大趋势

平均土壤水分亏缺程度为19.38%

25年刺槐林土壤水分亏缺程度最大(27.76%)

40年时略有恢复(25.80%);表层土壤水分变异程度最大

变异程度随林龄增加呈增大趋势

速变层、活跃层、次活跃层和相对稳定层4个层次只在40年刺槐林均有出现。研究结果可为黄土高原植被生态恢复和科学经营人工林提供一定的理论基础。

Abstract

Soil moisture content of Robinia pseudoacacia plantation was monitored at fixed points to investigate the distribution and deficit degree of soil moisture of R. pseudoacacia plantation at different ages. Using the method of spatial sequence instead of time successional sequence

25 and 40 years R. pseudoacacia plantations were selected as the research objects

and farmland (0 years) was served as control to investigate and analyze the distribution of soil moisture content in the 0-200 cm soil layer. The results showed that the average soil moisture content was in order of 0 years (18.80%)＞10 years (16.43%)＞15 years (15.47%)＞40 years (13.87%)＞25 years (13.38%). The soil moisture deficit was found in all stands and showed an increase trend with the increasing of stand age. The average degree of soil moisture deficit was 19.38%

the highest value was observed in the 25 years plantation (27.76%)

and there was a slight recovery in the 40 years plantation (25.80%). The variation degree of surface soil water was the largest

and it increased with the increasing of stand age. The four levels of rapid change layer

active layer

sub-active layer and relatively stable layer were only observed in the 40 years plantation. The above research results could provide a certain theoretical basis for vegetation ecological restoration and scientific management of plantations on the Loess Plateau.

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