The study of the effects and the them-ecological mechanism of forest management on the underlayer plant and mushroom flora in satoyama

里山森林经营对下层植物和蘑菇区系的影响及其生态机制研究

基本信息

批准号：
16580115
负责人：
KOBAYASHI Tatsuaki
金额：
$ 2.37万
依托单位：
Chiba University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2006
项目状态：
已结题

项目摘要

1. Exchangeable cation in forest soil. increased doe to the advance of urbanization along Tama River. Soil acidity was consequently neutralized in urban area.2. In secondary forest of Quercus serrata in Sayama Hill., the mineralization and nitrification of soil were studied in relation to forest management and micro topography. In crest-slope, the concentrations of NH_4-N and NO_3-N were high. In side-slope, NH_4-N was high and NO_3-N was low. In head-hollow, the proportion of NO_3-N was high. Forest cutting reduced the supply of organic matter to soil and decreased the mineralization rate. Though it also increased the nitrification rate, the content of mineral nitrogen was decreased due to the increase of the outflow of nitrate and the increase of nitrate-favoring plants.3. 299 stands of secondary forest of in Sayama Hill were classified into 7 categories due to underlayer flora. The primary separation occurred between coppiced stands and natural stands. The secondary separation occur … More red among micro topographical types. Species abundance was fewest in dwarf-bamboo dominant stands and Eurya dominant stands.4. The occurrence of mushroom was studied in Sayama Hill for 3 years. Ectomycorrhizal fungi was much in slope and few in head hollow. In ectomycorrhizal fungi, Amanitaceae and Boletaceae occurred much on slope, but Russulaceae occurred on both of slope and head-hollow. Ectomycorrhizal fungi decreased in coppiced stands, where the proportion of mycorrhizal trees had been reduced. Saprotrophic fungi decreased in litter-removed stands.5. The changes of soil nitrogen properties and the biomass of Pleioblastus chino were studied for 3 years under the treatment of underlayer-mowing and litter-removal. Aboveground biomass was decreased by mowing. Belowground biomass was reduced by litter-removal. Total and mineral nitrogen content of topsoil was decreased under the treatments in the half-shade site. At the forest site, ammonium content was not changed, but nitrate content was decreased by mowing and litter-removal. Less

1。在森林土壤中可交换的阳离子。沿着塔马河沿着城市化的发展增加了能力。因此，土壤酸度在市区被中和2。在Sayama Hill的Quercus Serrata的二级森林中，研究了土壤的矿化和硝化，与森林管理和微地形有关。在Crest-Slope中，NH_4-N和NO_3-N的浓度很高。在侧坡中，NH_4-N很高，NO_3-N很低。在台空台上，NO_3-N的比例很高。森林切割减少了有机物对土壤的供应，并降低了矿化速率。尽管它也提高了硝化速率，但由于硝酸盐的产量增加和硝酸盐含量的植物增加，矿物氮的含量降低了。3。由于卧式植物群，有299座次要森林的二级森林被归类为7个类别。主要的分离发生在苔藓林的支架和自然林之间。次要分离发生了……微观地形类型之间的红色更为红色。在矮小的摊位中，物种抽象最少，而Eurya主导地位则是4。肌肉的发生在Sayama Hill研究了3年。外生肌肉真菌在斜坡上很多，头部空心很少。在外生肌肉真菌中，斜肌科和boletaceae发生在斜坡上很多，但在斜坡和头洞上都发生了uss术。外生肌肉真菌成为培养的林木，在那里菌根的比例减少了。腐烂的真菌在垃圾置的林分中降低了5。在治疗卧式底层和垃圾拆除的治疗下，研究了3年的土壤氮特性和脊髓细胞奇诺的生物量的变化。地上生物质通过割草减少。地下生物量通过垃圾重量减少。在半阴影部位的处理下，表土的总氮含量减少了。在森林地点，铵含量没有改变，但通过割草和垃圾拆除减少了硝酸盐含量。较少的