[1]张文君,高 永,党晓宏,等.风沙采煤沉陷区小叶杨下生物结皮空间分异规律[J].水土保持研究,2020,27(06):85-89.
　ZHANG Wenjun,GAO Yong,DANG Xiaohong,et al.Spatial Distribution of Biological Crust Under Populus simonii Carr. in Mining Subsidence Area of Aeolian Sand Region[J].Research of Soil and Water Conservation,2020,27(06):85-89.
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风沙采煤沉陷区小叶杨下生物结皮空间分异规律

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 27 期数: 2020年06期 页码: 85-89 栏目: 目次 出版日期: 2020-10-20
Title:
Spatial Distribution of Biological Crust Under Populus simonii Carr. in Mining Subsidence Area of Aeolian Sand Region
文章编号:
1005-3409(2020)06-0085-05
作者:
张文君1, 高 永1, 党晓宏1,2, 王瑞东1, 闫 宇1
(1.内蒙古农业大学 沙漠治理学院, 呼和浩特 010018; 2.内蒙古杭锦荒漠生态系统国家定位观测研究站, 内蒙古 鄂尔多斯 017400)
Author(s):
ZHANG Wenjun1, GAO Yong1, DANG Xiaohong1,2, WANG Ruidong1, YAN Yu1
(1.Institute of Desert Control Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China; 2.Hangjin Desert Ecological Position Research Station of Inner Mongolia, Ordos, Inner Mongolia 017400, China)
关键词:
生物结皮;  小叶杨;  分布半径;  采煤沉陷区
Keywords:
biological crust;  Populus simonii Carr.;  distribution radius;  mining subsidence area of aeolian sand region
分类号:
S154.3
文献标志码:
A
摘要:
为了解小叶杨林下生物结皮分布状况及其影响因素,从而能够为风沙采煤沉陷区小叶杨植物群落演替和植被恢复提供理论基础,以风沙采煤沉陷区小叶杨林下生物结皮为研究对象,采用样线法对小叶杨林下生物结皮分布进行调查,测定了小叶杨林下生物结皮的分布半径和厚度,分析了小叶杨林下生物结皮在东南、东北、西南和西北4个方向的分布特征。结果表明:(1)小叶杨下生物结皮在不同方向上的分布存在差异,东南方向生物结皮分布半径最大,为树冠半径的0.90倍; 西北方向上结皮分布半径最小,为树冠半径的0.72倍; 东北和西南介于二者之间。(2)小叶杨下生物结皮厚度分布存在差异,生物结皮距小叶杨基部0 cm处出现最大值,其值为1.64 cm,随着距离的增加生物结皮厚度逐渐减小。(3)在4个方向上,东南方向生物结皮最厚,平均厚度为1.44 cm; 西北方向生物结皮最薄,平均厚度为1.23 cm。小叶杨下生物结皮厚度与土壤含水率变化从小叶杨基部距离到距基部140 cm处,呈现随距基部距离的增加而降低,变化趋势基本一致。
Abstract:
In order to realize the distribution of biological crusts under Populus simonii Carr. and their influence factors, and provide a theoretical basis for the community succession and vegetation restoration of Populus simonii Carr. in subsidence area of aeolian sand mining region, we took the biological crusts under Populus simonii Carr. as the research samples, investigated the distribution of the biological crusts by using the transect method, measured the distribution radius and thickness of biological crusts, and analyzed the distribution characteristics of biological crusts under Populus simonii Carr. in four directions: southeast, southwest, northwest and northeast. The results indicate that:(1)there are significant differences in distributions of biological crusts under Populus simonii Carr. in different directions, the distribution radius of biological crust in the southeast is the largest, which is 0.90 times of the size of the crown radius; the distribution radius of biological crust in the northwest is the least, which is 0.72 times of the size of the crown radius; the distribution radius in the northeast and in the southwest are in between;(2)there are differences in thickness distributions of biological crusts under Populus simonii Carr., the maximum value of biological crust appears at 0 cm from the base of Populus simonii Carr., which is 1.64 cm; the thickness of biological crusts gradually decreases with distance;(3)in four directions, the biological crust in the southeast is the thickest, of which an average thickness is 1.44 cm; the biological crust in the northwest is the thinnest, of which an average thickness is 1.23 cm. The changes of biological crust thickness and soil moisture content from the base distance to 140 cm from the base of Populus simonii Carr. decrease with the increase of the distance from the base, and the change trend is basically the same.

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备注/Memo

收稿日期:2019-10-30 修回日期:2020-03-10
资助项目:内蒙古自治区科技重大专项资金项目“重点区域荒漠化过程与生态修复研究示范”(zdzx2018058); 中央引导地方科技发展专项资金计划项目“内蒙古荒漠化防治创新研究中心”
第一作者:张文君(1994—),女,内蒙古巴彦淖尔人,硕士研究生,研究方向为荒漠化防治。E-mail:18048339699@163.com
通信作者:高永(1962—),男,内蒙古包头人,教授,博士生导师,主要从事荒漠化防治研究。E-mail:13948815709@163.com

更新日期/Last Update: 2020-10-20