Development and Utilization of Geological Tourism Resources in Xiling Gorge of the Three Gorges

To comprehensively and reasonably develop and utilize geological tourism resources in Xiling Gorge(one of the Three Gorges),this study through classifying geological tourism resources in this section combined its geological formation,strata relationship,distribution of natural and cultural tourist resources,comprehensively analyzed problems in the present development,and potentials of local geo-tourist resources.Besides,a feasible work plan on the development of geological tourism resources along the Yangtze River,south of the River and north of the River was designed to present an optimal way for the development of local geo-tourism resources,in order to promote the sound development of geological tourism and other tourism industries in this region.

Heavy Metal Pollution and Ecological Risk Assessment in Sediments of Xiling Channel Inland Waterway of Guangdong Province

Using the sediment monitoring data of five sections of the Xiling Channel inland waterway of the Pearl River Delta,and using Nemerow composite index,the coefficient of variation,and the index of geoaccumulation( Igeo) and the potential ecological risk index,this paper analyzed and assessed the heavy metal pollution of sediments. The results indicate that Cr reached mild pollution;Cu had a large degree of variation,and the changes of Cr and Zn were significant with fluctuation;the enrichment of heavy metals decreased as follows: Cd > Cu > Cr > Zn> Pb > Ni > Hg > As;Cd had the highest degree of enrichment and belonged to moderate pollution;the ecological hazard of heavy metals was Cd > Hg > Cu > Pb > As > Cr > Ni > Zn,and Cd had the highest ecological hazard and was the main controlling factor of potential ecological risk. In conclusion,the sediments in Xiling Channel inland waterway were polluted by heavy metals to some extent,and cadmium was the main pollutant and had the largest potential ecological risk.

Erahertz spectral analysis of Xiling Zhimu with different geological conditions and plant age

Objective: In order to identify the quality of different geological conditions and plant ages of Xiling Zhimu. Methods: This article uses the terahertz spectroscopy to detect and analyze different geological conditions and ages of Zhimu (Anemarrhenae Rhizoma) from the same origin. Results: The terahertz time-domain spectroscopy of different geological conditions and ages has a decrease relative to the reference amplitude and has a delay. The refractive index has obvious differences, and the refractive index can be used as a way to identify the tablets. The absorption coefficients of different ages Zhimu samples has significant differences in the range of 1.0-2.0 THz. The absorption coefficients of different geological conditions Zhimu samples has significant differences in the range of 1.1-2.0 THz. Conclusions: The differences caused by different production methods should be considered in the identification of genuine regional drug. When the Zhimu is grown due to different geological conditions and plant ages, its efficacy will also change. we can detect this change by terahertz spectroscopy.

林农参与林业碳汇意愿影响因素分析——基于黑龙江省集体林调研数据

基于黑龙江省主要集体林所在地区的9个市（县）、11个乡（镇）、25个村851份问卷数据，从林农的个人因素、家庭经营因素、认知因素、经历因素和社会环境因素5个维度18个指标人手，运用二元Logistic回归模型进行研究。结果显示：性别、文化程度、林地总面积、对环保意识的认知、对林业碳汇概念的认知、参与林业碳汇项目的经历、国家给予的碳汇造林补贴和政府组织的碳汇造林技术培训8个变量对林农参与林业碳汇意愿有显著的正向影响；政治面貌和林业收人占家庭总收入比例2个变量对林农参与林业碳汇意愿有显著的负向影响。