摘要
对森林凋落物生态功能的研究概况进行了综述 ,重点对凋落物对土壤肥力、幼苗更新生长、杂草生长和植物生长等方面的影响进行了分析。凋落物可以增加有机质、N、P、K的含量及土壤的含水量 ,降低土壤温度 ,增加土壤酶的种类 ,提高土壤酶的活力及土壤无脊椎动物的多样性 ;作为覆盖物的凋落物及其浸提液可以抑制杂草种子的萌发 ,促进幼苗的更新生长 ;凋落物还可以作为蚯蚓生物反应器的原料 ,生产出多功能有机肥。
The ecological functions of forest litter are summarized, and the influences of litter on soil fertility, seedling’s emergence and establishment, weeds and plants growth are analyzed emphatically. Litter can enhance the contents of organic matter, N, P and K as well as water content of soil, reduce soil temperature, enrich the species and promote the activities of soil enzyme, and increase the diversity of soil invertebrate. Being used as mulch or treated with aqueous extracts, litter can inhibit the weed seed’s pullulating and promote the seedling’s emergence and establishment. Moreover, multi-functional organic fertilizers can be produced when the litter is used as one of the materials of earthworm bioreactor.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2004年第6期79-80,83,共3页
Journal of Northeast Forestry University
基金
上海市绿化管理局科研项目资助 (编号F0 30 2 0 3)
上海市生态学重点学科建设子项目
关键词
森林凋落物
生态功能
土壤肥力
幼苗
更新生长
蚯蚓
生物反应器
Forest litter
Ecological function
Soil fertility
Seedling’s emergence and establishment
Earthworm bioreactor
