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2018 Vol. 37, No. 3

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Study on geochemical behavior of high field strength elements during weathering of carbonate rocks: Evidence from leaching experiment on carbonate rock
FENG Zhigang, LIU Xuanzhi, HAN Shili, MA Qiang
2018, 37(3): 315-329. doi: 10.11932/karst20180301
Abstract:
It is generally believed that the high field strength elements (HFSE, including Sc, Ti, Y, Zr, Nb, Hf, Ta, Th, etc.) are extremely inert in the epigenetic environment. However, it had been reported that there was a significant variation in the content ratio between above elements during the transiti...
Development features of nine poljes and structural relationship of underground river system in the southwest area of Hubei
CUI Xuejie, YAN E’chuan, GAO Xu
2018, 37(3): 330-335. doi: 10.11932/karst20180302
Abstract:
The carbonate rocks are exposed widely in the southwest area of Hubei province, forming a rich karst phenomenon. Particularly, it has been confirmed that the largest polje group has developed with typical underground river system in Hefeng county and nearby towns. Research on the development charact...
Response of base cations migration of lime soil to simulated acid rain
LIU Wei, ZHOU Yunchao, ZHANG Chunlai
2018, 37(3): 336-342. doi: 10.11932/karst20180303
Abstract:
In order to reveal the characteristics of soil base cations migration and their buffering properties under the influence of simulated acid rain in lime soil, we have made a simulation test of acid rain leaching on lime soil of karst areas. Results show that there is no significant difference in the ...
Effects of Paleozoic carbonate rock on shale gas accumulation and exploitation in southern China
DAN Yong, LU Bingxiong, LIANG Bin, ZHANG Qingyu, LI Jingrui
2018, 37(3): 343-350. doi: 10.11932/karst20180304
Abstract:
The dark shale of Paleozoic is widely present in southern China, but little progress has been made in exploration of shale gas. One reason for this is the co-existence of carbonate that complicates the geological condition. Based on experiences from abroad and southern China on this issue in recent ...
Characteristics of soil and water loss in the Lijiang River Basin and soil erosion factors in typical karst small watersheds
QIN Xingming, HE Binghui, SHEN Lina, WANG Kui, YU Qiwen, ZHANG Luyao
2018, 37(3): 351-360. doi: 10.11932/karst20180305
Abstract:
The purpose of this study is to determine the characteristics of soil erosion in the Lijiang River Basin and the relationship between soil erosion and impact factors in the Zhaidi karst underground river watershed. The distribution feature of soil and water loss on a medium scale in the Lijiang Rive...
Vertical distribution of NDVI in typical karst regions of Guizhou and Guangxi
YU Zhuxiao, ZHANG Hongqi, XU Erqi
2018, 37(3): 361-370. doi: 10.11932/karst20180306
Abstract:
Karst regions in Guizhou and Guangxi are characterized by complex topography and highly variable vegetation coverage. Previous studies commonly focused on the vertical distribution of NDVI from the perspective of the response of climatic factors. Because of the sharp contradiction between human and ...
Ecological risk assessment of heavy metals in farmland soils around karst coal mining areas: A comparison of various methods
LIU Pinzhen, JIA Yaqi, CHENG Zhifei, YANG Zhen, DU Qilu, WU Di
2018, 37(3): 371-378. doi: 10.11932/karst20180307
Abstract:
In this paper, we use TCLP method and the methods of Nemerow comprehensive index and geoaccumulation index (Igeo) to evaluate heavy metal pollution in the farmland soils around mining areas in Zhijin County of Guizhou province. The results show that the contents of cobalt (Cd), chromium (Cr), copper...
Study on leaf litter decomposition of Loropetalum chinense and Pinus massoniana in karst areas and clastic rock areas in Maocun, Guilin
TU Chunyan, HUANG Binghui, YANG Hui, BAI Bing, MO Biqin, CAO Jianhua
2018, 37(3): 379-387. doi: 10.11932/karst20180308
Abstract:
The purpose of this work was to explore the impact of the karst ecological environment on the decomposition of tree litter, and the role of litter decomposition in karst ecosystems in global carbon balance. We utilized field litter bag method to determine the decomposition rate and nutrient release ...
Study on community characteristics of bryophytes in dolomite cave twilight zones:An example of the Shuidong Cave in Suiyang county, Guizhou Province
GUO Yun, WANG Zhihui, ZHANG Zhaohui
2018, 37(3): 388-399. doi: 10.11932/karst20180309
Abstract:
Dolomite caves are one of unique habitats in karst mountainous areas, where some special bryophyte communities live in dolomite cave twilight zones. A study of species composition, ecological types and distribution of bryophyte communities was conducted in the Shuidong Cave at Suiyang county, Guizho...
Analysis on spatial correlation between sensitivity of rocky desertification and macroscopic geomorphology in Guizhou Plateau
YAN Lihui, ZHOU Zhongfa, XIE Yating, HUANG Denghong
2018, 37(3): 400-407. doi: 10.11932/karst20180310
Abstract:
In this work, taking the typical karst plateau of Guizhou Plateau,southwest China, is used as the study area, we constructed an evaluation index system and evaluation model for assessing rocky desertification sensitivity, as well as established its spatial relation with different landform types. The...
Early warning threshold of sinkhole collapse based on dynamic characteristics from groundwater monitoring: A case study of Jinshazhou of Guangzhou, China
MENG Yan, HUANG Jianmin, JIA Long
2018, 37(3): 408-414. doi: 10.11932/karst20180311
Abstract:
Karst sinkhole collapse early warning based on monitoring data has long been a prominent technical problem which needs to be solved in the field of geohazard. This paper analyses the current status of sinkhole collapse monitoring and early warning research, and then presents a case study of Jinshazh...
Dewatering induced karst collapse conditions and safety prevention and control measures in Nanning subway construction
JIANG Fuwei, ZHANG Fawang, LIU Lin, LIU Wei, LI Liang, CHEN Hang
2018, 37(3): 415-420. doi: 10.11932/karst20180312
Abstract:
Extracting groundwater is an important factor triggering karst collapse. However, there are few studies on critical parameters and safety prevention and control measures for karst collapse induced by extracting groundwater. Taking the East Metro Station of Sports Center No. 4 of Nanning subway as an...
Cause analyses and prevention suggestions for the karst collapse in the Fujia village of Hunan, China
SUN Xiliang, CHEN Liangjing, OU Jian, CHEN Wendong
2018, 37(3): 421-426. doi: 10.11932/karst20180313
Abstract:
Based on the theory of karst ground collapse, this work studied the genesis and development trend of the karst ground collapse at the Fujia Village, Ningxiang Coal Mine. Previous surveys show that high distribution density, large collapse scales, poor stability after backfilling, and continual defor...
Monitoring and analysis of deep buried karst soil caves based on BOTDR technology
LIU Yongli, GUAN Zhende, XIAO Henglin
2018, 37(3): 427-432. doi: 10.11932/karst20180314
Abstract:
Surface collapse of karst soil caves can be attributed to many complex factors.The aim of this work is to reveal the stress characteristics of soil caves in the marked areas being monitored. Based on the Terzaghi theory of loose earth pressure, the vertical earth pressure in the loose zone is analyz...
Relationship between development of inclined karst cave and bedrock orientation in a monoclinal structure area
LUO Shuwen, YANG Tao, CHEN Weihai, DENG Yadong, PAN Xiaodong, CHEN Hongfeng, LI Chengzhan
2018, 37(3): 433-439. doi: 10.11932/karst20180315
Abstract:
In this paper, the relationship between the developmental trend of karst inclined cave and the orientation of rock formation in monoclinal structural area by constructing cave spatial distribution trend surface and rock dipping surface. Firstly, measurement initial point is regarded as original poin...
Spatial distribution of karst cave resources in south-western Hubei region
XU Songhua
2018, 37(3): 440-449. doi: 10.11932/karst20180316
Abstract:
A karst cave is one of the most important geological tourism resources. China possesses about 9.1×105 km2 the karst terrain, and accounts for approximately 1/10 of the whole land surface of the country. There are 6 provinces in southwest China, including Sichuan, Hubei, Hunan, Guangxi, Guizhou and Y...
Development and distribution characteristics of karst caves in the Xiangxi river basin
LUO Lichuan, LIANG Xing, ZHOU Hong, XIE Kai, CHEN Biaodian
2018, 37(3): 450-461. doi: 10.11932/karst20180317
Abstract:
Xiangxi river, a tributary of the Yangtze River, is situated at Xingshan county, Hubei Province ,South China. The river is 97.3 km long and has a catchment of 3,190 km2. Tectonic uplift and subsequent erosion have produced a steep terrain of middle-low mountains and deep ravines that are characteri...
Characteristics of the Doushuai karst cave in Hunan and its formation and development process
DENG Xinping, YUAN Ruiqiang, PI Jiangao
2018, 37(3): 462-467. doi: 10.11932/karst20180318
Abstract:
The Doushuai karst cave, is located at the southern end of the Doushuai island in Dongjiang lake of Hunan Province. it is situated in warm and humid subtropical climate zone with an average annual precipitation of 1,645 mm and a mean annual temperature of 17.1 ℃. As the landform is dominated by eros...
Study on landscape lighting of Zhangguan karst cave in Chongqing
DUAN Ran, YANG Chunyu, SU Jiafu
2018, 37(3): 468-473. doi: 10.11932/karst20180319
Abstract:
Karst cave lighting promotes the development of karst cave tourism. However, the unscientific cave lighting causes the growth of the light plants in the cave, which destroys the special environment in the cave. In this paper,the relationship between the growth of light plant and the artificial light...