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Formation mechanism of interior drainage areas and closed drainage areas of the Ordos Plateau   in the middle reaches of the Yellow River, China based on an analysis of the water cycle ·················································································HOU Guang-cai, ZHAO Zhen-hong, WANG Xiao-yong, et al. (1107)

Conceptual model of hydrogeology of the Cretaceous groundwater basin of the Ordos basin, China·················································································ZHANG Mao-sheng, HU Fu-sheng, YIN Li-he (1115)

Lithofacies-based study of the structure of the aquifer system of the Cretaceous Ordos basin, China ···································································TAO Zheng ping, CUI Xu-dong, HUANG Jin-ting, et al. (1123)

Multi-layer circulation model of groundwater flow systems on the Ordos plateau, China: evidence from water head measurements at different depths of a deep borehole by the Packer system ····················································································ZHAO Zhen-hong, WANG Dong, TAO Zheng ping, et al. (1131)

Mode of occurrence of karst groundwater in the Northern Shaanxi Energy and Chemical Industry Base, China, and its influence factors··········································DANG Xue-ya, ZHANG Mao-sheng (1138)

Characteristics and yield mechanisms of stream runoffs in the Northern Shaanxi Energy and Chemical Industry Base, China·························································  CHANG Liang, ZHANG Mao-sheng (1143)

Area variation and controlling factors of Lake Hongjian, Mu US desert, China, based on remote   sensing techniques························································YIN Li-he, ZHANG Mao-sheng, DONG Jia-qiu (1151)

Regional model and imbedded model of the Tianqiao karst groundwater system in the northeastern Ordos basin, China····················································· DONG Ying, TIAN Fang, DANG Xue-ya, et al. (1157)

Calculation of the amount of surface evapotranspiration in the northern Ordos basin, China----based on remote sensing································································································  LU Na, WAN Li (1165)

Distribution characteristics of burnt metamorphic rocks in the Northern Shaanxi Energy and Chemical Industry Base, China, and their hydrogeological significance ·························································································································································DU Zhong-ning, DANG Xue-ya, LU Na (1168)

Formation of mud springs in the Cretaceous Ordos groundwater basin, China,   and their hydrogeological significance ································································································································································································YANG Yun-cheng, HOU Guang-cai, ZHAO Zhen-hong, et al. (1173)

Fuzzy integrated evaluation of groundwater quality in the Cretaceous Ordos artisan basin, China based on GIS·································································SU Yao-ming, SU Xiao-si, HOU Guang-cai, et al.(1178)

Vulnerability assessments of phreatic water in the Northern Shaanxi Energy and Chemical Base, China ···································································HE Shuai-jun, LI Yun-fang, ZHANG Mao-sheng, et al. (1186)

Distribution characteristics and origin of high-fluorine groundwater atDali, Shaanxi, China ·····························································································ZHU Hua, YANG Bing-chao, ZHAO A-ning, et al. (1192)

Present state and change of phreatic water quality in Dali County,Shaanxi, China ············································································································ KE Hai-Ling, ZHU Hua,YANG Bing-chao, et al. (1196)

Risk investigation method and practice of geohazards········································································································································································ZHANGMao-sheng, TANG Ya-ming (1205)

Loess slope stability analysis based on reliability················································································································································································································TANG Ya-ming (1217)

Geohazards threatening cave dwellings in loess hilly areas of northernShaanxi, China·································································································HUANG Yu-hua, ZHANG Rui,WANG Jia-yun, et al. (1223)

Formation mechanism and hazard causes of the Yangya landslide in Yan'an City, Shaanxi, China ······························································································WANG Jia-yun, WEI Xing-Li, XUE Qiang (1230)

Investigation and research on the mine geological environment: present and outlook································································································································································X U You-ning(1235)

Present status of mine geohazards in the northwest region of China and characteristics of their temporal-spatial distribution············································································································································································································HE Fang, X U You-ning, CHEN Hua-qing, et al. (1245)

Characteristic of mine environment map compilation in the northwest region of China ·····································································································HE Fang, X U You-ning, ZHANG Jiang-hua, et al. (1256)

Contents of heavy metals in bottom sediments of the Taiyu River in the Tongguan gold mining area, Shaanxi, China, and contamination assessments······················································································································································································X U You-ning, ZHANG Jiang-hua (1263)

Evaluation of the potential ecological risk of heavy metals in farmland soils in a certain gold mining area, Xiaoqinling, China··································································································································································································XU You-ning, ZHANG Jiang-hua, ZHAO A-ning, et al.(1272)

Contrast analysis on heavy metals contents in villagers' hair in contaminated areas of the Xiaoqinling gold belt, China··················································································································································································································X U You-ning, ZHANG Jiang-hua, XIE Juan, et al. (1279)

Evaluation of potential ecological risk of heavy-metal pollution in bottom mud of the Xiyu River in the Xiaoqinling gold mining area, China   ······················································································ ·········································································ZHANG Jiang-hua, ZHAO A-ning, CHEN Hua-qing, et al. (1286)

Source characters and risk assessment on mine slag-type debris flows in the Dahu valley, Xiaoqinling, China················································································································································································································CHE  Hua-qing, X U You-ning, ZHANG Jiang-hua, et al. (1292)

Ecological effects of vegetations during groundwater exploitation in the Northern Shaanxi Energy& Chemical Industry Base, China····························································································································································································· ZHA NG Mao-sheng, L U Na, CHE Jin-song(1299)

Ecological risk of vegetation caused by resource exploitation in the Northern Shaanxi Energy& Chemical Industry Base, China·····································································································································································································DONG Ying, ZHANG Mao-sheng, LU Na, et al. (1313)

Ecology-oriented groundwater sustainable exploitation plan in the wind-blown sand beach area of northern Shaanxi, China························································································································································································WANG Yan-Lin, WANG Wen-ke, ZHANG Hui, et al. (1323)

Vegetation ecological areas of the Ordos Plateau, China, and their hydrogeological significance ········································································HUANG Jin-ting, HOU Guang-cai, TAO Zheng-ping, et al. (1330)

Current status, evolution trend and cause of land desertification of the Ejin basin, western Inner Mongolia, China································································  NIE Hao-gang, LI Zhi-pei, Y UE Le-ping, et al. (1335)

Environmental-geological problems of coal mine areas induced by coal exploitation in frangible eco-environment areas-A case study of the Daliuta coal mine area, Shenmu County, Shaanxi, China························································································XU You-ning, LI Zhi-pei, CHEN Hua-qing, et al. (1344)