Studies on Material Cycling in Evergreen Broad-Leaved Forest Ecosystem in Hangzhou: Ⅰ. Precipitation

来源 :Pedosphere | 被引量 : 0次 | 上传用户:feier068
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Through the long-term plot studies on the precipitation distribution in the evergreen broad-leaved forest ecosystem in Hangzhou for two years, it was indicated that the pattern of precipitation distribution included larger amounts of penetration water and stemflow and a lower amount of interception water. The results revealed that the main factors to infulence the percentages of penetration and stemflow were the air temperature and the leaf area of the forest. The quantity of seepage through the litter layer was much larger than that through the soil layers which decreased sharply with soil depth. The output of water from the ecosystem by surface runoff and deep infiltration through the soil was much lower, only being 5.20 percent of the rainfall, while the water evapotranspiration loss was as large as more than 90 percent of it. The losses by the soil evaporation and plant evapotranspiration were the largest part of output in this forest ecosystem. Through the long-term plot studies on the evergreen broad-leaved forest ecosystem in Hangzhou for two years, it was indicated that the pattern of precipitation distribution includes larger amounts of penetration water and stemflow and a lower amount of interception water. The results revealed that the main factors to infulence the percentages of penetration and stemflow were the air temperature and the leaf area of ​​the forest. The quantity of seepage through the litter layer was much larger than that through the soil layers which decreased sharply with soil depth . The output of water from the ecosystem by surface runoff and deep infiltration through the soil was much lower, only being 5.20 percent of the rainfall, while the water evapotranspiration loss was as large as more than 90 percent of it. The losses by the soil evaporation and plant evapotranspiration were the largest part of output in this forest ecosystem.
其他文献
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
期刊
生物学通报常务编委会3月份例会于3月10日在北京师范大学附属中学召开,会上请本刊常务编委、师大附中校长朱正威老师介绍了该校生物教学改革的情况,参观了电化教学设备,听了
阜阳市局 £4a 局长——_MINtkMMtgj’#lnH$B——q.M——D收束志不他只邀狲位J则【科校为先导推动地租工作.B为广为戳民U用凶盼引眯B.习.互们羹宽.互狈槽竺汹IAn.刊 办好杂志。必
阜阳市局 £4a 局长——_MINtkMMtgj’#lnH$B——q.M——D收束志不他只邀狲位J则【科校为先导推动地租工作.B为广为戳民U用凶盼引眯B.习.互们羹宽.互狈槽竺汹IAn.刊 办好杂志。必
阜阳市局 £4a 局长——_MINtkMMtgj’#lnH$B——q.M——D收束志不他只邀狲位J则【科校为先导推动地租工作.B为广为戳民U用凶盼引眯B.习.互们羹宽.互狈槽竺汹IAn.刊 办好杂志。必
阜阳市局 £4a 局长——_MINtkMMtgj’#lnH$B——q.M——D收束志不他只邀狲位J则【科校为先导推动地租工作.B为广为戳民U用凶盼引眯B.习.互们羹宽.互狈槽竺汹IAn.刊 办好杂志。必
2010年吴敬链、周小川、郭树清等以整体改革理论获第三届中国经济理论创新奖。本届论坛中,学者们就当前经济发展与改革中的热点与重点问题进行了演讲。作为论坛的学术媒体支
A SOTER (soil and terrain digital database) project at the scale of 1:500000 has been tested using the CIS (geographical information system) methodology in Hai
目的 了解南宁市区综合医疗机构医技人员对结核病防治知识的知晓情况,为结核病健康促进策略的制定和实施提供依据.方法 对市辖区40所综合医疗机构205名医技人员进行结核病知
Protein kinase C with a molecular weight of 82 kD has been purified to electrophoresis homogenous from rat brain through a series of chromatography columns incl