Assessing the Potential of Cross-border regional innovation Systems:A case study of the Hong Kong -Shenzhen region

While technological transformations have redrawn the boundaries of regional innovation systems, the effect of such transformations on the development of cross-border regional innovation systems (CBRISs) – defined here as the innovation system spanning neighboring territories belonging to different nation-states – has not been well understood. The Hong Kong-Shenzhen region presents a unique opportunity to study the potential of CBRISs, as Hong Kong and Shenzhen are adjacent to each other though there is a border between them and the two cities have their own political and legal systems under the “one country, two systems” arrangement. In this research, we examine the development of the Hong Kong-Shenzhen region by focusing on cognitive proximity, innovation actors, collaboration, and global connectivity through an analysis of patent and publication data for the 2001–2015 period. Our findings point to a good potential given the growing convergence in scientific research among the two cities, steadily increasing collaboration output, and a complementarity among innovation actors. However, compared with other cross-border regions, the technological linkages between Hong Kong and Shenzhen remain limited.     

珠江口盆地惠州凹陷古近系文昌组优质湖相烃源岩生烃动力学

基于两种升温速率下的玻璃管封闭体系烃源岩生烃模拟实验，最大程度排除烃类裂解的影响，揭示了珠江口盆地惠西南地区古近系文昌组半深湖相优质烃源岩的生油与生气的绝对产率及其与成熟度的理论共变模式。通过生烃模拟实验提供的精确产率数据，首次建立了该区文昌组优质烃源岩生成重烃（C₁₄₊）及降解气（C_1-5）的动力学模型参数。利用地质推演的手段重建了半深湖相烃源岩生成重烃-烃气转化率与地层温度的理论协变关系，结合生烃洼陷的埋藏史-热演化史，认为惠州26洼文昌组半深湖相优质烃源岩的生烃演化进程具有“早油晚气”的特点，早期石油快速生成，对应的地质年代跨度介于40～15 Ma，地温范围为95～160 ℃，而晚期主力烃源岩生成大量天然气，对应的地温范围为119～205 ℃，烃源岩现处于生气阶段的末期。     

汉江上游干支流沉积物细菌群落多样性和影响因素

为了解汉江上游干支流沉积物细菌多样性以及确定性过程和随机性过程在沉积物细菌群落构建过程中的相对重要性,基于Illumina高通量测序技术,分析了环境因子对细菌群落组成的影响,采用非度量多维尺度(NMDS)排序探究了季节之间沉积物细菌群落的差异,并结合中性群落模型和标准化随机率量化了确定性过程和随机过程对群落构建的影响。结果表明:汉江上游及其支流细菌群落主要由变形菌门(Proteobacteria)、拟杆菌门(Bacteroidetes)、蓝藻门(Cyanophyta)、浮霉菌门(Planctomycetes)和酸杆菌门(Acidobacteria)等组成；细菌群落在不同季节有显著差异；地理距离和环境因子对细菌群落结构影响较小,确定性过程并未在细菌群落组成中起到主导作用；随机过程很大程度上影响了群落在秋季和春季的组成,是沉积物细菌群落构建的主导因素。     

Monitoring water level and volume changes of lakes and reservoirs in the Yellow River Basin using ICESat-2 laser altimetry and Google Earth Engine

Monitoring the water level and volume changes of lakes and reservoirs is essential for deepening our understanding of the temporal and spatial dynamics of water resources in the Yellow River Basin, with a view to better utilizing and managing water resources. In recent years, there have been many studies on monitoring water level and volume changes in inland waters, but they were mainly focused on radar altimetry and the full waveform LiDAR ICESat, which was retired in 2010. Few studies based on the latest photon-counting LiDAR ICESat-2 have been reported. Compared with previous sensors, ICESat-2 has great advantages in footprint size, transmitting frequency, pulse number, etc, but its performance in monitoring water level and volume changes in inland waters has not been fully explored. Here we investigated the spatial distribution of water level and volume changes of 11 lakes and 8 reservoirs in the Yellow River Basin based on ICESat-2 and Google Earth Engine, and analyzed the factors affecting the measurement uncertainties. In-situ validation of lake level in Lake Qinghai indicates that the Root Mean Square Error (RMSE) of our result is only 7 cm after the reference coordinate system conversion. We found that the water level trend of the natural lake shows significant seasonal variations, while the water level trend of the reservoir shows a sharp rise and fall. In addition, precipitation plays a decisive role in the changes in natural lake levels and indirectly affects the artificial control of reservoirs’ water discharges. The uncertainty of water volume change monitoring is mainly affected by water level measurement uncertainty for lakes, while for reservoirs, that is affected by the combination of water level and area measurement uncertainties. The stability of lake level measurement increases with the increase in photon counts. The introduction of ICESat-2 ATL13 Significant Wave Height might lead larger standard deviation in water level measurement. According to the law of propagation of uncertainty, the uncertainty of the water volume change estimation by the combination of ICESat-2 and GEE is less than 9 %.     

龙岗区生活垃圾分类现状及对策研究

通过调查深圳龙岗现有城市生活垃圾分类现状和收运模式,分析其存在的问题和成因,提出深圳市龙岗区生活垃圾分类处理的策略。     

茅洲河污染来源分析及治理对策研究

茅洲河作为深圳、东莞界河,水污染问题一直备受关注。污染来源不明导致上下游治理不同步、治污存在争议问题长期存在。根据现场监测,分析水质现状,核算污染通量,明确了深圳光明新区、宝安区、东莞长安镇对茅洲河的污染贡献分别为27.3%、31.5%、41.2%,并提出了整治对策,为茅洲河水污染治理提供依据。     

“长株潭”地区湘江底泥重金属含量调查研究

通过调查分析湘江＂长株潭＂段表层底泥的锌、铜、镉、铬、铅、汞、锰等重金属含量,将底泥样品中重金属的含量分别与土壤环境质量标准、污水排入城市下水道水质标准、以及生活饮用水卫生标准中重金属含量进行比较,从而发现重金属在湘江＂长株潭＂段的污染严重程度。根据调查结果分析,对湘江＂长株潭＂段底泥重金属污染问题提出减排含重金属废水,有关部门应关注底泥重金属含量变化,和修复河床表层重金属含量高的底泥等建议。     

四川色曲河流域植被分布特征的研究

通过对色曲河流域植被的实地考察,结合基于3S技术的遥感解译技术,对该流域植被的分布特征进行了初步探究。从水平分布、垂直分布、林线与雪线的分布规律等方面分析了色曲河流域植被的分布特征。主要表现在:(1)研究区雪线高度为海拔4800m,林线:阴坡为海拔3600m左右;阳坡在3800m左右;(2)研究区山地垂直自然带谱可分为5个,分别为山地常绿硬叶阔叶林地带、山地暗针叶林带/山地落叶阔叶林地带、高山灌丛草甸带、高山草甸带、高寒荒漠带;(3)水平分布的地域性特征比较明显,主要原因为各地的海拔不同所导致;(4)流域植被随坡向变化的规律比较明显,阳坡植被与阴坡植被具有明显的差异性。     

Investigation report of geotechnical disaster on river area due to typhoon landfall three times on Okhotsk region,Hokkaido, Japan

For one week from August 17 to 23, 2016, three consecutive typhoons made landfall in Hokkaido for the first time on record. These typhoons and the front they stimulated brought record-breaking torrential rain over the eastern part of Hokkaido. To investigate the damage to grounds and rivers resulting from this rainfall, the Japan Society of Civil Engineers (JSCE) and the Japanese Geotechnical Society (JGS) formed a disaster research group to conduct an investigation. This report provides the results of the investigation into damage to the grounds of areas along the Tokoro River of the Okhotsk region, Hokkaido, that suffered from this tremendous and diverse disaster. Specifically, the report describes the situation of the levees which were broken and eroded by the overflowing water, the shape of the levee bodies, the levee body soil properties examined by observation of the sections, as well as the occurrence of sand boiling and air blows. The washout of road embankments as well as damage to road bridge mounting fills and abutment backfills were also investigated. The investigation has demonstrated the need to clarify the resistance of the abutment backfills and levee bodies to flowing water as well as the geotechnical predominant factors in order to clarify the mechanisms behind erosion and washout, the need to review new measures that allow for the scale of sand boiling and resultant changes in levee body stability, and the fact that the existing embankments were able to temporarily suppress the flooding water which had spilled over from the river. Furthermore, although it has been identified that the findings of a study on an embankment washout associated with a tsunami can be applied to measures taken against the overflowing water, it has also been found necessary to clarify the predominant geotechnical factors using model tests and to use a more sophisticated analytical approach to establish a geotechnical stability review as soon as possible in order to prevent the levees and embankments from being eroded and washed out due to overflowing water.     

从珠江三角洲到粤港澳大湾区演变看规划响应

采用实证研究方法,以规划响应的演变印证规划的本质。前半部分对珠江三角洲乃至粤港澳大湾区的历版规划进行高度概括梳理凝练,解读了规划演变历史背景,揭示规划响应是一个由局部到整体、层级由低到高的演变过程,既是国家意志体现,亦是经济规律使然,此观点具首创性。后半部分主要阐述《粤港澳大湾区发展规划纲要》的出台及粤港澳三地聚焦科技创新走廊的规划响应,通过描述粤港澳三地在空间上和政策上各自作出的规划响应,以地区的特殊性再次重申“体现国家意志,顺应社会经济发展规律”的规划本质。