Identification and alleviation pathways of multidimensional poverty and relative poverty in counties of China

To realize efficient and sustainable poverty alleviation,this study firstly investigated the identification of multidimensional poverty and relative poverty,and then explored relevant poverty alleviation pathways.Poverty levels in 31 provinces including the autonomous re-gions and municipalities of China were identified at the county level using the average nighttime light index (ANLI),county multidimensional development index (CMDI),and a method combining multidimensional poverty index and relative poverty standards.Poverty alleviation pathways for poverty-stricken counties were explored from the aspects of industry,education,tourism and agriculture.The results revealed that nearly 60％ of counties in China were primarily under relative poverty,most of which were corresponded to light relative pov-erty.In terms of ANLI and CMDI,63％ and 79％ of the national poverty-stricken counties,as of 2018,could be identified,suggesting that CMDI had a higher performance for identifying poverty at the county level.In terms of poverty alleviation pathways,414,172,442,and 298 poverty-stricken counties were receptive to industry poverty alleviation,education poverty alleviation,tourism poverty alleviation,and agriculture poverty alleviation,and 61％ of coun-ties had more poverty-causing factors,implying that multidimensional poverty alleviation is suitable in most of the counties.     

东川白沙包陡山沱组铜矿

晋宁运动形成的昆阳群古侵蚀面上存在大小不一的沉积凹地,成为陡山沱组重要的聚矿构造。昆阳群大型铜矿为陡山沱组白沙包铜矿提供丰富成矿物质来源。断裂构造是白沙包铜矿进一步改造富集的重要因素。     

基于激光雷达波形数据的点云生产

随着数据存储能力和处理速度的提高,小光斑机载激光雷达系统现在已经可以通过数字化采样来存储整个反射波形,而不仅仅是由系统提取出来的3维坐标(即离散点云).分析波形数据最重要的优点之一是可以在后处理过程中让使用者自己来提取3维坐标.一般的分解方法基于波形的局部最大值和波形的重心,或者有设备厂商提供的简单阈值法,无法获得高精度的分解结果.本文使用改进的EM脉冲检测算法来得到回波脉冲的位置和宽度,并能得到高质量的点云数据,为DSM(Digital Surface Model)和DTM(Digital Terrain Model)生产提供优质数据源.     

Impacts of Roof/Ground Mitigation Strategies on Improving the Urban Thermal Environment and Human Comfort over the Yangtze River Delta,China

The combined effects of global warming and the urban heat islands exacerbate the risk of urban heat stress. It is crucial to implement effective cooling measures in urban areas to improve the comfort of the thermal environment. In this study, the Weather Research and Forecasting Model(WRF), coupled with a single-layer Urban Canopy Model(UCM), was used to study the impact of heat mitigation strategies. In addition, a 5-km resolution land-cover dataset for China(ChinaLC), which is based on satelli...     

Centennial-scale monsoon collapses during Marine Isotope Stage(MIS)7e detected in a northern Chinese stalagmite record

Occurrence or absence of centennial-scale climatic variability during Marine Isotope Stage(MIS)7e, the first peak interval of the Penultimate Interglacial, remains ambiguous due to the limited available high-resolved records. Here, we present a decadal-resolved stalagmite δ¹⁸O record from northern China spanning from 242.3 to 236.8 ka BP, covering MIS7e. The composite KLS δ¹⁸O record, integrating this study with the previous record in the same cave, shows a descending trend...     

Classification of seamount morphology and its evaluating significance of ferromanganese crust in the central Pacific Ocean

1 IntroductionCobalt-richcrust, alsoknownasferrom anganesecrustormanganesecrust, isdefined astheferroman-ganesedepositiondistributingontheseamountandoc-curringinlayer,crustandgravelornoduleinpart.Itisrich inthemetalofhigh economicvalue(cobalt,nick-el,plat…     

Evaluation of the glacial isostatic adjustment (GIA) models for Antarctica based on GPS vertical velocities

Due to the scarcity of data, modeling the glacial isostatic adjustment(GIA) for Antarctica is more difficult than it is for the ancient ice sheet area in North America and Northern Europe. Large uncertainties are observed in existing GIA models for Antarctica. Modern space-based geodetic measurements provide checks and constraints for GIA models. The present-day uplift velocities of global positioning system(GPS) stations at 73 stations in Antarctica and adjacent regions from 1996 to 2014 have been estimated using GAMIT/GLOBK version 10.5 with a colored noise model. To easily analyze the effect of difference sources on the vertical velocities, and for easy comparison with both GIA model predictions and GPS results from Argus et al.(2014) and Thomas et al.(2011), seven sub-regions are divided. They are the northern Antarctic Peninsula, the Filchner-Ronne Ice Shelf, the Amundsen Sea coast, the Ross Ice Shelf, Mount Erebus, inland Southwest Antarctica and the East Antarctic coast,respectively. The results show that the fast uplift in the north Antarctic Peninsula and Pine Island Bay regions may be caused by the elastic response to snow and ice mass loss. The fast subsidence near Mount Erebus may be related to the activity of a magma body. The uplift or subsidence near the East Antarctic coast is very slow while the uplift for the rest regions is mainly caused by GIA. By analyzing the correlation and the associated weighted root mean square(WRMS) between the GIA predictions and the GPS velocities, we found that the ICE-6G_C(VM5a) model and the Geruo 13 model show the most consistency with our GPS results, while the W12a and IJ05_R2 series models show poor consistency with our GPS results. Although improved greatly in recent years, the GIA modeling in Antarctica still lags behind the modeling of the North American. Some GPS stations, for example the Bennett Nunatak station(BENN), have observed large discrepancies between GIA predictions and GPS velocities.Because of the large uncertainties in calculating elastic responses due to the significant variations of ice and snow loads, the GPS velocities still cannot be used as a precise constraint on GIA models.     

利用梯度分析技术对12种锦鸡儿属植物抗旱性的定量研究

利用梯度分析技术对锦鸡儿属12种植物8个生理指标进行分析, 计算出了植物的抗旱梯度值; 建立了抗旱梯度轴; 排出了植物的抗旱性顺序; 并指出了影响植物抗旱能力的主导因子。植物的抗旱梯度值与束/自比之间呈线性相关, 相关系数为0.9204, 相关方程为y=1.5696+0.0911x。     

自动气象站硬件、通讯故障的判断与维护

首先结合通讯、硬件等方面的情况,对自动气象站故障的判断和维护进行了阐述,并列举了一些故障实例加以说明。然后认为应进一步加快自动气象站监控系统的建设,使维护人员能够及时发现设备故障,以提供远程在线维护。     

Sedimentary Facies,Provenance and Geochronology of the Heshangzhen Group: Implications for the Tectonic Evolution of the Eastern Jiangnan Orogen,South China

The Neoproterozoic Jiangnan orogen plays an important role in the study of the Precambrian tectonic evolution of South China. The tectonic nature of the Neoproterozoic sedimentary basins is still controversial, due to poor understanding of the sedimentary sequences and the lack of geochronological data. Here, we present sedimentological, provenance and geochronological data from the Heshangzhen Group in the eastern Jiangnan orogen. Sedimentological analysis shows that the Luojiamen Formation was deposited in a submarine fan, and the overlying Hongchicun Formation was deposited in front of a fan delta. The youngest detrital zircons constrain the lower Luojiamen and Hongchicun formations with ages of 827.3 ± 8.4 Ma and 825 ± 12 Ma, respectively. The sandstones of the Luojiamen Formation are characterized by a large number of intermediate to felsic volcanic grains, suggesting a volcanic arc source. In contrast, quartz and sedimentary lithic grains increase in the Hongchicun Formation, showing a new input from a collisional orogenic source. Detrital zircon from six sandstone samples in the Luojiamen and Hongchicun formations yield similar age spectra of 930–820 Ma with a peak at ca. 845–860 Ma, with one main cluster at 930–820 Ma. Detrital zircons of 930–845 Ma show a positive value of εHf(t)(+2.4 to +11, mean +7.6), which is similar to the volcanic arc of the nearby Shuangxiwu Group. There are a minor group of zircons with U-Pb ages ranging from 820 Ma to 845 Ma from the middle part of the Luojiamen Formation and Hongchicun Formation, with εHf(t) values between-20 to +2.4, which are consistent with the characteristics of the Shuangqiaoshan Group. within light of the bidirectional paleocurrents in the Luojiamen Formation, it is speculated that the zircons of 820–845 Ma were recycled from the Shuangqiaoshan Group, which is derived from a continental arc to the northwest. Our data suggests that the Luojiamen Formation was formed in an inter-arc basin, while the Hongchicun Formation was formed in an accretionary wedge-top basin. When juxtaposed with the conglomeratic characteristics at the bottom of the Luojiamen Formation, it is believed that the unconformity represented by the ‘Shen Gong Movement' reflects the rapid erosion and accumulation process of island arc volcanic material. The disconformity between the Luojiamen and Hongchicun formations is the imprint of transition from inter-arc basin to accretionary wedge-top basin,which represents the collision between the Shuangxiwu arc and the Yangtze Plate.