| 多因素干扰下森林公园枯落物水文效应 |
| |
| 引用本文： | 郑淼,郭毅,辛如洁,李庆华.多因素干扰下森林公园枯落物水文效应[J].水土保持学报,2022,36(3):115-121. |
| |
| 作者姓名： | 郑淼 郭毅 辛如洁 李庆华 |
| |
| 作者单位： | 山西林业职业技术学院, 太原 030009 |
| |
| 基金项目： | 国家林业局职业教育项目(LYZJ2018YB009);天龙山森林公园不同景观绿地枯落物水文生态效应研究院级项目(LY20210201) |
| |
| 摘 要： | 为探究森林公园植被的水源涵养能力,为森林公园植被配置和经营管理提供依据,研究选取天龙山森林公园6种林分(油松、山杨、刺槐、油松—侧柏混交林、侧柏—油松—杏树混交和灌木林)为研究对象,通过测定林下枯落物厚度、蓄积量、持水性能和干扰度等指标,研究不同林分类型枯落物水文效应。结果表明:(1)所有林分枯落物干扰度范围为无到中度,厚度范围为0.57~2.63 cm,山杨最厚,侧柏—油松—杏混交林最薄;蓄积量范围为7.20~16.30 t/hm2,油松—侧柏混交林最大,侧柏—油松—杏混交林最小。(2)6种林分除山杨林以外,半分解层最大持水量均大于未分解层持水量,其中油松—侧柏最大,山杨最小;未分解层最大持水率均大于半分解层,刺槐最大,灌木林最小。枯落物的总最大持水量为20.02~27.90 t/hm2,总最大持水率为187.40%~277.89%,针阔混交林的持水率较高。(3)山杨有效拦蓄量最大,为15.05 t/hm2,而油松最小,为12.33 t/hm2;侧柏—油松—杏混交林的拦蓄率最大;(4)枯落物持水量、持水率与时间分别为对数和幂函数关系,均在泡水2 h达到极值。综合对比6种林分,轻度干扰的山杨水文效益最优,中度干扰的油松纯林、油松—侧柏混交林最差;阔叶树种水文效应较优于针叶树种,针阔混交优于纯林。研究结果可为森林公园植被管理和水土保持效益评价提供参考依据。
|
| 关 键 词： | 森林公园 枯落物 水文效益 干扰度 |
| 收稿时间： | 2021/11/2 0:00:00 |
Hydrological Effects of Litter in Forest Parks Under Multi |
| |
| ZHENG Miao,GUO Yi,XIN Rujie,LI Qinghua.Hydrological Effects of Litter in Forest Parks Under Multi[J].Journal of Soil and Water Conservation,2022,36(3):115-121. |
| |
| Authors: | ZHENG Miao GUO Yi XIN Rujie LI Qinghua |
| |
| Institution: | Shanxi Forestry Vocational and Technical College, Taiyuan 030009 |
| |
| Abstract: | To explore the water conservation capacity of vegetation in the forest park and provide a reference for vegetation configuration and management, six typical stands in Tianlong Mountain Forest Park were selected to investigate and analyze the litter thickness, accumulation, water holding and other indicators inside the forest. Soaking methods were used to measure the hydrological effect of litter.(1) The interference and thickness of litter ranged from none to moderate and from 0.57 to 2.63 cm, respectively, among which, Populus davidiana gave the largest, and the mixed forest of Platycladus orientalis-Pinus tabuliformis-Armeniaca sibirica gave the smallest. The accumulation range was 7.20~16.30 t/hm2, among which, Pinus tabuliformis-Platycladus orientalis mixed forest was the largest, and Platycladus orientalis-Pinus tabuliformis-Armeniaca sibirica mixed forest was the smallest. (2) Except for Populus davidiana, the maximum water holding capacity of the semi-decomposed layer was greater than that of the undecomposed layer, among which, Pinus tabulaeformis-Platycladus orientalis was the largest and Platycladus orientaliswas the smallest. The maximum water holding rate of undecomposed layer was larger than that of semi-decomposed layer, the largest was found under Robinia pseudoacacia and the smallest under shrub. The range of maximum water holding capacity was 20.02~27.90 t/hm2, and the range of maximum water holding rate was 187.40%~277.89%. The water holding rates of coniferous and broad-leaved mixed forest were comparatively higher. (3) The maximum effective storage capacity of tree species was found in Populus davidiana with its value of 15.05 t/hm2; the minimum was Pinus tabuliformis of 12.33 t/hm2. Platycladus orientalis-Pinus tabuliformis-Armeniaca sibirica mixed forest had the maximum storage rate. (4) The relationships of litter water holding capacity and water holding rate with time could be fitted by logarithmic and power functions, respectively. Both of them reached the peak values within two hours of soaking in water. Based on the comprehensive comparison of six forests, light disturbed Populus davidiana had the best hydrological benefits; oppositely, moderate disturbed Pinus tabuliformis-Platycladus orientalis mixed forests had the worst. The broad-leaved species had better hydrological effects than coniferous species, and the mixed coniferous and broad-leaved species were better than a single species. These consequences can provide references for the vegetation configuration and hydrological benefit evaluation of forest parks. |
| |
| Keywords: | forest park litter hydrological benefits hemeroby |
|
| 点击此处可从《水土保持学报》浏览原始摘要信息 |
| 点击此处可从《水土保持学报》下载免费的PDF全文 |
|
