山西省露天煤矿复垦区典型人工林凋落物持水性能研究

doi:10.13866/j.azr.2023.12.16

干旱区研究 ›› 2023, Vol. 40 ›› Issue (12): 2043-2052.doi: 10.13866/j.azr.2023.12.16

• 生态与环境 • 上一篇

山西省露天煤矿复垦区典型人工林凋落物持水性能研究

张建华¹(),张琨¹,刘勇²,张红²,张凯权¹,周晓阳³,徐龙超³()

1.忻州师范学院生物系，山西忻州 034000
2.山西大学黄土高原研究所，山西太原 030006
3.太原理工大学生态学学院，山西太原 030024

收稿日期:2023-04-14 修回日期:2023-08-30 出版日期:2023-12-15 发布日期:2023-12-18
通讯作者: 徐龙超. E-mail: xulongchao@tyut.edu.cn
作者简介:张建华(1978-)，女，博士，副教授，主要从事植物生态学、生态系统物质循环研究. E-mail: wj123-2007@163.com
基金资助:
NSFC-山西煤基低碳联合基金项目(U1910207);国家自然科学基金青年基金项目(31700413);山西省高等学校人文社会科学重点研究基地项目(20210122);山西省基础研究计划（自由探索类）项目(202203021221224)

Study on water-holding capacity of litters from typical artificial forests in reclaimed regions of the opencast coal mine in Shanxi Province

ZHANG Jianhua¹(),ZHANG Kun¹,LIU Yong²,ZHANG Hong²,ZHANG Kaiquan¹,ZHOU Xiaoyang³,XU Longchao³()

1. Department of Biology, Xinzhou Normal University, Xinzhou 034000, Shanxi, China
2. Institute of Loess Plateau, Shanxi University, Taiyuan 030006, Shanxi, China
3. College of Ecology, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China

Received:2023-04-14 Revised:2023-08-30 Online:2023-12-15 Published:2023-12-18

摘要/Abstract

摘要：

为了探究煤矿排土场人工林凋落物持水性能对矿区水土保持及生态系统恢复的重要作用，本研究采用野外调查和室内浸提相结合的方法，测定了山西省安太堡露天煤矿排土场4种典型人工林（小叶杨、榆树、油松和刺槐）不同分解阶段凋落物蓄积量、持水率、持水量、吸水速率等持水特性。结果表明：小叶杨和油松凋落物蓄积量显著高于刺槐和榆树（P<0.05）；4种人工林不同分解阶段凋落物持水率和持水量与浸水时间均呈极显著对数关系（P<0.01）；凋落物吸水速率呈现刺槐>榆树>小叶杨>油松，且吸水速率与浸水时间均存在极显著幂函数关系（P<0.01）。凋落物最大持水量和有效拦蓄量分别为：4.59~8.94 t·hm^-2和3.42~7.31 t·hm^-2，顺序均为：小叶杨>油松>刺槐>榆树。小叶杨凋落物的持水能力最强，而刺槐凋落物吸水速率最快。因此，优先栽植小叶杨，并与刺槐适当混交，对山西省露天煤矿复垦区水源涵养有积极作用。

关键词: 复垦区, 人工林, 凋落物, 持水性能, 山西省

Abstract:

To study the important effects of the water-holding capacity of litter in plantation plants in coal mine dumps on soil and water conservation and ecosystem restoration in mining areas, litter accumulation amount, the thickness, water-holding rate, water-holding capacity, and water absorption rate of different decomposition stages were investigated in four typical plantations of the same age (Populus simonii, Ulmus pumila, Pinus tabulaeformis, and Robinia pseudoacacia forests) in the Antaibao opencast coal mine reclamation area, through field investigation and soaking extraction. The results showed that the litter accumulation amount in the P. simonii forest was higher than that in the R. pseudoacacia and U. pumila forests (P < 0.05). The water-holding capacity and litter rate at different decomposition degrees changed logarithmically with immersion time (P < 0.01). The order of the water absorption rate of litter was R. pseudoacacia forest > U. pumila forest > P. simonii forest > P. tabulaeformis forest, and the water absorption rate showed a significant power function with immersion time (P < 0.01). In conclusion, the litter of the P. simonii forest had the strongest water-holding capacity, whereas the R. pseudoacacia forest had the fastest water absorption rate. Therefore, from the perspective of the water conservation capacity of litter, P. simonii forest should be prioritized and mixed with the R. pseudoacacia forest, which is more conducive to water conservation in the reclamation area of opencast coal mines.

Key words: reclamation area, plantation, litters, water-holding capacity, Shanxi Province

张建华, 张琨, 刘勇, 张红, 张凯权, 周晓阳, 徐龙超. 山西省露天煤矿复垦区典型人工林凋落物持水性能研究[J]. 干旱区研究, 2023, 40(12): 2043-2052.

ZHANG Jianhua, ZHANG Kun, LIU Yong, ZHANG Hong, ZHANG Kaiquan, ZHOU Xiaoyang, XU Longchao. Study on water-holding capacity of litters from typical artificial forests in reclaimed regions of the opencast coal mine in Shanxi Province[J]. Arid Zone Research, 2023, 40(12): 2043-2052.

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林型	纬度	经度	海拔 /m	人工林类型	林龄 /a	林下优势种	平均胸径/cm	平均树高/m	密度 /(株·hm^-2)	郁闭度 /%
小叶杨	39°29′26.15″N	112°18′55.30″E	1469	纯林	25	赖草、早熟禾、阿尔泰狗娃花	10.90	5.50	2133	40
榆树	39°29′28.64″N	112°18′44.41″E	1474	纯林	25	兴安胡枝子、早熟禾、阿尔泰狗娃花	12.90	5.50	1100	56
油松	39°29′29.80″N	112°18′46.49″E	1471	纯林	25	兴安胡枝子、早熟禾、阿尔泰狗娃花	10.70	4.70	1500	75
刺槐	39°29′33.35″N	112°18′44.08″E	1474	纯林	25	角蒿、铁杆蒿、早熟禾	9.80	4.80	2033	70

林型	总厚度 /cm	总蓄积量/（t·hm^-2）	未分解层（U）		半分解层（S）
林型	总厚度 /cm	总蓄积量/（t·hm^-2）	蓄积量/（t·hm^-2）	比例/%	蓄积量/（t·hm^-2）	比例/%
小叶杨	2.33±0.44b	3.53±0.72a	1.78±0.23a	53.25±8.13ab	1.76±0.58ab	46.75±8.13ab
榆树	2.60±0.31b	1.38±0.02b	0.93±0.03b	67.26±2.79a	0.45±0.05b	32.74±2.79a
油松	3.60±0.06a	3.14±0.81ab	1.07±0.11b	36.53±4.88b	2.07±0.09a	63.47±4.88b
刺槐	2.70±0.15ab	1.73±0.24ab	0.90±0.03b	53.35±5.63ab	0.83±0.21ab	46.65±5.63ab

人工林类型	凋落物层	方程	R²
小叶杨	半分解层	W=3.5359+0.2899lnt	0.9507^**
小叶杨	未分解层	W=1.3222+0.1070lnt	0.9564^**
榆树	半分解层	W=3.6787+0.3759lnt	0.9739^**
榆树	未分解层	W=2.5010+0.1179lnt	0.9955^**
油松	半分解层	W=3.0141+0.4581lnt	0.9229^**
油松	未分解层	W=1.8658+0.1959lnt	0.9691^**
刺槐	半分解层	W=1.1334+0.2441lnt	0.9814^**
刺槐	未分解层	W=2.0821+0.1668lnt	0.9650^**

人工林类型	凋落物层	方程	R²
小叶杨	半分解层	R=210.21+16.506lnt	0.9760^**
小叶杨	未分解层	R=290.25+24.142lnt	0.9959^**
榆树	半分解层	R=181.71+18.376lnt	0.9845^**
榆树	未分解层	R=301.38+13.745lnt	0.9933^**
油松	半分解层	R=169.70+25.719lnt	0.9199^**
油松	未分解层	R=200.68+21.030lnt	0.9693^**
刺槐	半分解层	R=106.10+23.170lnt	0.9812^**
刺槐	未分解层	R=231.85+18.470lnt	0.9689^**

人工林类型	凋落物层	方程	R²
小叶杨	半分解层	V=2.0981t^-0.927	0.9998^**
小叶杨	未分解层	V=1.7015t^-0.875	0.9986^**
榆树	半分解层	V=2.8951t^-0.923	0.9995^**
榆树	未分解层	V=2.0062t^-0.907	0.9997^**
油松	半分解层	V=1.8133t^-0.909	0.9998^**
油松	未分解层	V=1.058t^-0825	0.9994^**
刺槐	半分解层	V=3.013t^-0.957	0.9999^**
刺槐	未分解层	V=2.3135t^-0.926	0.9997^**

山西省露天煤矿复垦区典型人工林凋落物持水性能研究

Study on water-holding capacity of litters from typical artificial forests in reclaimed regions of the opencast coal mine in Shanxi Province

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