HYDROLOGICAL OBSERVATION IN AN EVERGREEN BROAD LEAVED FOREST IN THE WUYI MOUNTAINS

[中文文摘]对武夷山甜槠林成熟林水文学效应的研究结果表明：观测期间，年大气降水量2678.78ｍｍ，林内雨量2182.04ｍｍ，林冠截留量为496.74ｍｍ；林内雨中，穿透雨量2082.08ｍｍ，树干茎流99.96ｍｍ；到达甜槠林地作用面的林内雨量中，被地表枯枝落叶层截留的雨量为159.84ｍｍ，地表径流量11.6ｍｍ，地下渗流量109.32ｍｍ，其余林内雨量形成土壤含水量增量并由地表物理蒸发、根系吸收以及植物蒸腾所消耗；甜槠林地o~20０ｃｍ土层水分初渗率78.6ｍｍ·ｍｉｎ－１，稳渗率１５．５ｍｍ·ｍｉｎ－１，达到稳渗历时４５ｍｉｎ，地表枯枝落叶最大持水量5.2ｍｍ，土壤蓄水量154.0ｍｍ。与国内其它地区不同类型的森林相比较，武夷山甜槠林具有较强的水文学效能。[英文文摘]Hydrological observations were made in a 76 year old Castanopsis eyrei forest of the Wuyi Mountains.The results are as follows:(1)In the study period during 1993～1994,annual gross precipitation,net precipitation (throughfall was 208204mm and stemflow was 9996mm)and interception loss were 267878mm,218204mm and 49674mm respectively.Interception rate was 1845%.(2)Net precipitation,the part of gross precipitation appearing on the forest floor,was redistributed through different routes.The part absorbed by litter layer was an annual amount of 15984mm,and accounting for 733%.The parts as surface runoff and below ground drainage were annual amounts of 116mm and 10932mm respectively,and accounting for0.53% and 5.01%,respectively.The rest was kept in soil and then lost to the atmosphere by means of ground physical evaporation or plant transpiration as absorbed by the roots.Its amount was 190128mm,and accounting for 87.13%.(3) The initial infiltration rate and stable infiltration rate for the soil layer of 0～20cm were 786mm·min-1 and 155mm·min-1 respectively.The time needed to arrive at the stable state was 45min.Water storage capacity of soil was 15041t·hm-2.The maximum water holding capacity of litter layer was 52mm.福建省自然科学基金,武夷山自然保护区管理局资

Hydrological effect of different age Castanopsis eyrei stands at Wuyi Mountains

对福建省武夷山自然保护区境内不同林龄甜槠林的水文学效应的比较研究表明，由甜槠林幼林至成熟林，其水文学效应逐渐增强，杯冠截流雨量、地表枯枝落叶持水能力、林地土壤水分稳渗率、蓄水能力等指标值随林龄的增长而增加；地表径流量与地下渗流量则呈下降的趋势.这说明成熟的森林植被-土壤系统在调节气候、涵养水源和保持水土等方面具有独特的作用和巨大的效能.A comparative study on the hydrological effect of different age Castanopsis eyrei stands at theWuyi Mountains shows that C.eyrei stands of different ages have a markedly different hydrological effect.In an age-increasing sequence, an increasing trend of hydrological effect was observed. with increasing canopy interception increasing water-hoding capacity of litter layer, increasing water infiltration rate and water holding capocity of forest land, and decreasing surfacerunoff and underground drainage.It is suggested that mature forest vegetetion-soil spstem has aunique role and a gigantic effect on adjusting climate, holding water source, and conserving water and soil, and hence, the mature forest land must be conserved especially.福建省自然科学基金!C92004;武夷山自然保护区管理局资

智能传感器主动协同的变电站机器人智能巡检系统及方法

本发明提供了一种智能传感器主动协同的变电站机器人智能巡检系统及方法，本发明巡检系统包括：智能机器人协同巡检层、自主协同层和变电站智能传感层形成三层智能巡检架构。本发明巡检系统中，巡检机器人进行自主路径规划完成图像数据采集，智能传感器感知被检测设备的状态并进行数据预处理和分析，巡检机器人和智能传感器通过近场通信机制和智能执行器进行主动协同，协同服务器基于巡检机器人感知数据进行复杂场景识别，以及对巡检机器人感知数据和智能传感器感知数据进行多源数据融合分析。显著的提升了巡视的及时性，避免操作过程的人员安全风险.减少巡检时的人工干预，保证变电巡视任务顺利进行

JUNO Sensitivity on Proton Decay p→νˉK+p\to \bar\nu K^+ Searches

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar\nu K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar\nu K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel

JUNO sensitivity on proton decay p → ν K + searches*

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this study, the potential of searching for proton decay in the $p\to \bar{\nu} K^+$ mode with JUNO is investigated. The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits suppression of the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar{\nu} K^+$ is 36.9% ± 4.9% with a background level of $0.2\pm 0.05({\rm syst})\pm$$0.2({\rm stat})$ events after 10 years of data collection. The estimated sensitivity based on 200 kton-years of exposure is $9.6 \times 10^{33}$ years, which is competitive with the current best limits on the proton lifetime in this channel and complements the use of different detection technologies