阿克苏河流域水资源承载力模糊综合评价

阿克苏河是天山南坡水量最大的河流,是目前塔里木河最大的水量补给来源。由于阿克苏河流大规模的农业开发和不合理的水资源开发利用,不仅使得流域内生态环境脆弱,同时导致了补给干流的水资源减少,使得干流(尤其是在下游)产生了一系列的生态环境问题。本文针对阿克苏河流域水资源的实际情况,依据阿克苏河流域供需状况等,选取人均水资源可利用量,人均供水量、水资源利用率、耕地灌溉率、供水模数、需水模数、生活用水定额、生态用水率等指标,应用模糊综合评价方法综合的评价了流域内现状和不同水平年的水资源承载力,并提出了提高水资源承载力的途径

水分、盐分和埋深对铃铛刺和疏叶骆驼刺种子萌发的影响

在塔里木河下游通过不同水分、盐分和埋深对铃铛刺(Halimodendron halodendron)和疏叶骆驼刺(Alhagi sparsifolia)种子萌发的影响进行了研究,结果显示:(1)水分显著影响铃铛刺种子的萌发(P0.05)。(2)盐分极显著影响2种植物种子的萌发(P0.3 mol/L,种子萌发开始受到抑制。(3)埋深明显影响豆科植物种子的萌发。两种植物种子发芽率随埋深的增加呈先增加后下降的趋势,当埋深为0和2 cm时均不萌发

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