CHEN Jin,XU Ming,ZOU Xiao,et al.Litter layer Reserve and Water Holding Capacity of Pinus massoniana in Different Successional Stages in Guiyang[J].Research of Soil and Water Conservation,2018,25(06):146-151.
贵阳市不同林龄马尾松林凋落物储量及持水特性
- Title:
- Litter layer Reserve and Water Holding Capacity of Pinus massoniana in Different Successional Stages in Guiyang
- Keywords:
- forest ecology; water holding capacity; litter; Pinus massoniana
- 分类号:
- S715.3
- 摘要:
- 以贵阳市花溪区孟关林场不同林龄马尾松人工林为研究对象，采用时空替代法，选取不同林龄样地依次为林窗（对照）、幼龄林、中龄林、成熟林、过熟林5个样地，通过野外调查和室内分析的方法，对贵阳地区不同林龄马尾松林凋落物的储量及持水特性进行了研究。结果表明：不同林龄马尾松人工林凋落物储量及其持水特性存在显著差异（p < 0.05），呈现先增后减的趋势，均表现出成熟林最大，幼龄林最小，其中，成熟林凋落物储量、最大持水量、最大持水率、有效拦蓄量分别为：35.29 t/hm2，84.48 t/hm2，239.49%，38.31 t/hm2；幼龄林凋落物储量、最大持水量、最大持水率、有效拦蓄量分别为：10.19 t/hm2，12.33 t/hm2，120.38%，6.71 t/hm2；吸水速率开始0.25 h内最快，表明马尾松凋落物可在短时间发挥截水作用。通过对贵阳市不同林龄马尾松凋落物储量及持水性的对比得到：贵阳市马尾松成熟林具有最佳的生态水文特性。
- Abstract:
- Taking Pinus massoniana plantations with different ages in Mengguan Forest Farm of Huaxi District of Guiyang City as the research objects, the forest gap (control), young forest, middle forest, mature forest and over-mature forest were selected to examine the litter reserves and water holding capacity by field investigation and laboratory analysis. The results showed that there were significant differences (p < 0.05) in the litter reserves and water holding capacities at the different ages, the regular patterns of the litter reserves and water holding capacities first increased and then decreased, litter reserves and water holding capacities were the largest in mature forest and the smallest in the young forest. the litter reserves, the maximum water holding capacity, the maximum water holding capacity and the modified interception of mature forest were 35.29 t/hm2, 84.48 t/hm2, 239.49% and 38.31 t/hm2, respectively; they were 10.19 t/hm2, 12.33 t/hm2, 120.38% and 6.71 t/hm2 in the young forest; water absorption rate increased fastest within the initial 0.25 h, indicating that the litter could play the role in water interception in a short period of time. This study shows that the mature forest has the best eco-hydrological characteristics.
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备注/Memo
收稿日期:2018-01-17;改回日期:2018-01-31。
基金项目:国家自然科学基金（31660150）；贵州省科技支撑项目计划项目（黔科合支撑[2018]2773）；贵州省自然科学基金（黔科合基础[2017]1059号）；贵州省科技重大专项（黔科合重大专项字[2016]3022-07号）
作者简介:陈进(1994-),男,贵州桐梓人,硕士研究生,研究方向为外生菌根真菌生物多样性。E-mail:15761636472@163.com
通讯作者:张健(1980-),男,吉林梨树人,博士,副教授,主要从事微生物生态学研究。E-mail:zhangjian12102@163.com