The drainage of the aquitard and its implication for groundwater exploitation in Hengshui City

The deformation and the drainage of the aquitard is the main concern in the North China Plain(NCP), and the water released from aquitard compaction may be a large portion of the exploited groundwater. The skeletal specific storage of aquitard is the element parameter to the drainage of aquitard, and the undisturbed core samples are the best choice for the measurement of the physical parameters. In this study, the consolidation test was employed to analyze the skeleton specific storage of the clay sample drilled from Hengshui City, and the contribution from the drainage of aquitard to the groundwater exploitation. The results suggest the consolidation test can be utilized to understand the skeletal specific storage of aquitard, which is about 3.92×10-4 m-1 in the Hengshui. The water-saturation content of the aquitard was less than 100%, and the amount of the drainage of the aquitard was about 69% of the volume of land subsidence. The water released from aquitard compaction was about 35% of the groundwater exploitation to the deep aquifers.

Hengshui—A Pearl Embedded in Jizhong Plain

Situated in the Heilonggang Area of Southern Hebei Province, Hengshui City is the center of politics, economy and culture of Hengshui Prefecture, with a total area of 598 sq km and a population of 350,000. Since 1982, when Hengshui was approved to be built into a city, its economy has been growing rapidly. Now, annual GNP has topped RMB1.9059 billion, total industry and agriculture output value RMB 3.529 billion, and financial income RMB 176 million, putting it among the best in the province in composite economic index. Hengshui City stands in the

Foreign-oriented Hengshui Carries out Opening Policy

Since ushering in the 1990s, Hengshui City has been taking advantage of its excellent geographical position to develop its foreign-oriented economy, with good results. Take last year for example, the city signed contracts for altogether 28 foreign-invested projects, with a total capital of US$19.37 million and contractual capital of US$ 5.73 million, 14 completed and constructing foreign-invested projects, of which six have been put into operation. The infrastructure is being further improved in the Hi-tech Industrial Park which includes 49 projects of a total investment of RMB 180 million. The Hengshui Lake Economic and Technology

Hengshui Carpet Mill

Founded in 1972, the Hengshui Carpet Mill is one of the leading carpet mills in Hebei. Through 20 years of development, the mill now has 2,000 workers and 100 sets of key production equipment with fixed assets of RMB7 million. All of its products are exported. Its major products, such as Peacock brand woollen carpets in 90, 120 and 150 lines, are sold to Japan, South Africa, Hongkong, the United States and Western Europe, and are well received by the overseas consumers. The foreign-trade structural reform has fueled carpet exports, providing excellent opportunities for the Hengshui Carpet Mill. In 1994, by deepening corporate reform, improving the management, carrying out new projects and enhancing its marketing methods,

Hengshui Lake China’s Key Wetland Nature Reserve

WETLAND, an important eco-logical sys-tem, is of inestimable scientific, ecological, social and economic value. Bestowed liberally with nature’s bounty, China boasts various types of wetland, and during the past years has built over 130 wetland nature reserves, of which ten percent are

Hengshui New and Hi-tech Industrial Park

After years of construction and improvement, the Hengshui New and Hitech Industrial Park of Hebei Province has achieved a rather large scale and won great popularity with both Chinese and foreign businessmen. So far, it has approved the establishment of 146 projects in the park. and 44 industrial enterprises, of which 10 are joint ventures. The fixed assets of the park have amounted to RMB370 million. The Hengshui New and

Green Transport in Hengshui

I was born in Hengshui City, Hebei Province. Although it is a small city, Hengshui is getting much more bike-friendly and I think that’s really a good thing. On the one hand, people here can get some exercise by riding their bikes and on the other hand, they won’t add to the pollution in the air. However, there’s still a problem that taxi and bus drivers are too busy to pay attention to cyclists on the streets.

高温自流井流量数字化观测系统的开发及应用

选取河北衡水水温78℃自流井为实验井,经过对比多种观测方法及条件,选择电磁式流量观测方法开发流量观测系统。该系统软件为自行开发,可以实现数据校验、采集、转换、存储及接入中国地震前兆数据管理系统,仪器远程访问等功能。衡水井流量观测系统安装调试经过多次管路优化,实现了井管内流体气液分离,解决了空管报警问题,流量观测数据直观地反映了观测井-含水层的应力变化。

2016年衡水冀16井水位变化分析

衡水冀16井水位2016年经常出现有规律的大幅度异常波动变化,具有小幅下降—持续上升—小幅上升—持续下降变化形态,日变最大幅度0.73 m。通过现场核实,发现观测仪器工作正常,附近鱼场地下水开采量增加。增加辅助观测仪器同井对比水位观测,并对鱼场2口冷水井进行抽水试验,分析衡水冀16井水位异常变化原因。结果显示,衡水冀16井水位大幅波动异常变化可能因冷水井1抽水所致,冷水井2无影响。

Early-season crop type mapping using 30-m reference time series

Early-season crop type mapping could provide important information for crop growth monitoring and yield prediction,but the lack of ground-surveyed training samples is the main challenge for crop type identification.Although reference time series based method(RBM)has been proposed to identify crop types without the use of ground-surveyed training samples,the methods are not suitable for study regions with small field size because the reference time series are mainly generated using data set with low spatial resolution.As the combination of Landsat data and Sentinel-2 data could increase the temporal resolution of 30-m image time series,we improved the RBM by generating reference normalized difference vegetation index(NDVI)/enhanced vegetation index(EVI)time series at 30-m resolution(30-m RBM)using both Landsat and Sentinel-2 data,then tried to estimate the potential of the reference NDVI/EVI time series for crop identification at early season.As a test case,we tried to use the 30-m RBM to identify major crop types in Hengshui,China at early season of 2018,the results showed that when the time series of the entire growing season were used for classification,overall classification accuracies of the 30-m RBM were higher than 95%,which were similar to the accuracies acquired using the ground-surveyed training samples.In addition,cotton,spring maize and summer maize distribution could be accurately generated 8,6 and 8 weeks before their harvest using the 30-m RBM;but winter wheat can only be accurately identified around the harvest time phase.Finally,NDVI outperformed EVI for crop type classification as NDVI had better separability for distinguishing crops at the green-up time phases.Comparing with the previous RBM,advantage of 30-m RBM is that the method could use the samples of the small fields to generate reference time series and process image time series with missing value for early-season crop casification;while,samples collected from multiple years should be futher used so that the reference time series could contain more crop growth conditions.

以创新实现衡水市加快发展

加快发展是衡水市实现富民强市、全面建成小康社会的明智抉择。衡水市欲求加快发展,必须实行全面创新,区域发展原则下的创新,以创新的思维和理念确立加快发展的着力点,以创新的理念和手段打造产业、产品的竞争优势。