Changes in Morphological Succession and Moisture-nutrient Characteristics of Mound Under Shrub Patch in Water-wind Erosion Crisscross Region

LU Rong; JIA Chao; HAO Hongmin; HUANG Ze; LIU Yu; MIAO Haitao; WU Gaolin

doi:10.13870/j.cnki.stbcxb.2018.03.012

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Changes in Morphological Succession and Moisture-nutrient Characteristics of Mound Under Shrub Patch in Water-wind Erosion Crisscross Region

更新时间：2025-03-12

- Changes in Morphological Succession and Moisture-nutrient Characteristics of Mound Under Shrub Patch in Water-wind Erosion Crisscross Region
- Vol. 32, Issue 3, Pages: 74-79(2018)
- 作者机构：
  
  1. 西北农林科技大学, 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. 中国科学院水利部水土保持研究所, 陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2018.03.012
  CLC：
- Published：2018
- 稿件说明：
移动端阅览
LU Rong, JIA Chao, HAO Hongmin, et al. Changes in Morphological Succession and Moisture-nutrient Characteristics of Mound Under Shrub Patch in Water-wind Erosion Crisscross Region[J]. 2018, 32(3): 74-79.
DOI：

LU Rong, JIA Chao, HAO Hongmin, et al. Changes in Morphological Succession and Moisture-nutrient Characteristics of Mound Under Shrub Patch in Water-wind Erosion Crisscross Region[J]. 2018, 32(3): 74-79. DOI： 10.13870/j.cnki.stbcxb.2018.03.012.

摘要

灌丛沙堆是水蚀风蚀交错带典型的风积地貌景观。在黄土高原典型水蚀风蚀交错带，选择4种常见不同大小级的灌丛沙堆（小、中、大型和枯死灌丛沙堆），对灌丛沙堆的基本形态、土壤特性、差异性及相关性进行定量分析。结果表明：（1）灌丛演替变化显著影响沙堆发育，随着灌丛生物量的增加，沙堆体积也增大，当灌丛演替到稳定阶段时灌丛沙堆的发育也趋于稳定（P<0.05）。（2）灌丛沙堆的固沙量、高度及土壤容重因位置而异，灌丛沙堆主根处的固沙量和高度均为最大，边缘处相对较小，土壤容重反之。（3）枯死、大、中和小型灌丛沙堆土壤的有机质含量分别是裸地的1.54，1.92，1.46，1.30倍；土壤湿度分别是裸地的2.05，1.93，1.79，1.52倍。（4）灌丛沙堆边缘与主根3/4处水分、养分含量高于灌丛内其他位置。

Abstract

The shrub mound is a typical aeolian landform in the cross areas of wind-water erosion on Loess Plateau in China. Four sizes scale shrub mounds were selected to analyze the mound basic form

soil properties and correlations. The results showed:(1) The shrub succession significantly affected the development of mound. The mound volume was increased as the shrub biomass expansion. Until the shrubs succeeds in the stabilization phase

the mound volume tends to be stable (P < 0.05). (2) The amount

height and soil bulk density of the mound varied in the different position:the binding-sand quantity and height of the mound were the largest at the trap root

but were lowest in the edge. The soil bulk density showed the opposite characteristics. (3) The soil organic matter content of mound under the death

large

medium and small shrub patches were 1.54

1.92

1.46 and 1.30 times than the bare land

respectively; the soil moisture were 2.05

1.93

1.79 and 1.52 times than that of the bare land

respectively. (4) The soil moisture and soil organic matter content in the edge of the mound to three quarters of the trap root were higher than those in other positions of the mound.

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