摘要
为探讨闽粤栲人工促进天然更新林分的土壤肥力与涵养水源功能,以闽粤栲人工林和闽粤栲天然林为对照,对闽粤栲人促林土壤的理化性质和林分的地上部分与土壤层的固土保水能力进行分析。结果表明:采用人工促进天然更新措施的闽粤栲林分(人促林)的土壤结构、养分状况均得到改善;地上部分总持水能力,人促林与天然林分间差异极显著、与人工林间差异显著;各林分土壤各土层毛管持水量、田间持水量、最大持水量之间均差异显著,各林分的总持水量、初渗速度、稳渗速度大小为:人工林>人促林>天然林,表明闽粤栲人促林土壤具有良好的渗透性能和涵蓄水分的功能;各林分的地表径流系数、不同的降雨量对林分土壤的侵蚀量大小均为:人工林>人促林>天然林,表明与人工林相比闽粤栲人促林具有较强的固土功能。人工促进天然更新技术可应用于闽粤栲采伐迹地造林。
In order to understand the natural regeneration technology to promote the application of artificial forest of Castanopsis fissa create the effect of C.fissa artificially promoted natural regeneration of the forests soil fertility and water conservation funetion,with natural forest of C. fissa plantation and C. fissa were analyzed by C. fissa forest soil physical and chemical properties and stand on the part of the soil layer and soil water retention capacity, the results show that the forest natural regeneration measures the soll structure and nutrient status were improved,promotlng forest of C.fissa can better soil fertility; promoting forest of C.fissa on the part of total water holding capacity and natural forest of C.fissa have significant differences, and differences between C.fissa plantation signifi- candy. Each stand by the soil capillary capacity, field capacity, maximum water holding capacity were significantly different. Each stand the total water,initial infiltration rate, the steady infiltration rate is: C.fissa plantation forest 〉 C.fissa promoting natural forest 〉 C.fissa natural forest, showed that C.fissa promoting forest soil has good permeability and water conservation function. The erosion of surface runoff coefficient of the forest and forest soil of different rainfall is: C.fissa, C. fissa manual acceleratingrenewed forest and C.fissa natural forest, C.fissa plantations showed that C.fissa promoting forest has the strong function of soil, can be used in C. fissa deforested afforestation artificial regeneration.
出处
《福建林业科技》
2017年第2期51-57,共7页
Journal of Fujian Forestry Science and Technology
基金
福建省地方标准项目(闽质监标[2015]94号)
三明市林业科技研究项目(明财(农)指[2015]54号)
福建省标准化专项资金(闽粤栲栽培技术规范
闽财建指[2016]75号)
关键词
闽粤栲
人工促进天然更新
凋落物
土壤肥力
水源涵养
Castanopsis fissa
artificial promotion of natural regeneration
litter
soil fertility
water conservation