中文摘要：

中国西南喀斯特地区是典型的生态环境脆弱区,环境压力和巨大的人口数量导致该区生态环境受到严重破坏,石漠化加剧,由此导致区域土壤土层浅薄、侵蚀退化严重、蓄水能力低,进而导致作物产量降低,土壤水分已成为影响该区域植被生长、恢复及土壤侵蚀过程的主控因子。本研究在较为系统的总结水分监测技术发展趋势及现有中国喀斯特地区土壤水分研究成果的基础上,针对该区域环境保护、生态恢复重建及增强区域生态安全保障的需要提出喀斯特土壤水分今后研究的重点和方向,以便更好地为喀斯特地区植被恢复和生态重建提供科学依据。 中国具有丰富的石榴资源。石榴皮中鞣花酸是天然多酚物质的有效成分。目前中国石榴皮被大量废弃而造成严重的浪费。本研究选用3种不同石榴皮鞣花酸提取工艺,即1mol盐酸60℃酸水解提取2次、无水乙醇—硫酸铵双水相微波萃取—酸水解、40%乙醇60℃超声萃取—酸水解,对相同重量的石榴皮粉进行鞣花酸提取。通过对粗品提纯、紫外检测、计算含量和提取率等比较分析。结果表明：40%乙醇60℃超声萃取—酸水解后鞣花酸提取率最高达1807%。且有良好的稳定性,是石榴皮鞣花酸规模化生产的一种实用技术。

英文摘要：

Karst area in southwest China is the typical ecological environment fragile area. The ecolog- ical environment of it has been severely destroyed and rock desertification was generated because of the huge population and environmental pressure. It not only caused serious soil erosion, shallow soil and lower water storage capacity of Karst region, but also led to the reduce of crop yield. So soil moisture has become the main control factor of regional soil erosion, vegetation growth and recovery process. For the need of regional environmental protection, vegetation reconstruction and the regional ecological se- curity, we proposed the research focus and direction of Karst soil moisture in the near future, based on the summary of soil moisture monitoring technology development trend and the existing soil moisture re- search results in Karst area of China. The objective of this paper is to offer the better science basis for the ecological restoration and reconstruction in Karst area.