金沙江流域退耕还草地生态效益调查研究——鹤庆县试点区调查报告

Investigation on ecological benefit of returning cultivated land to grass land in Heqing county

退耕还草是保持水土、改善生态环境的重要措施之一。通过对鹤庆县退耕还草地土壤理化性状及其植被覆盖情况的调查研究,结果表明,在植被覆盖下土壤容重、孔隙度发生明显变化,而土壤含水量及pH值则变化不明显。针对上述调查结果,提出建议与意见,以指导云南省退耕还草地生态环境的建设。

Retaining cultivated land to grassland is one of the important measures for conserving soil and water and improving ecological environment.The effects on soil characteristics and vegetation coverage was studied in Heqing county. The results showed that the profitable effects of vegetation coverage on soil water content and pH. On the basis of the research reasonable proposals on returning cultivated land to grassland are put forward.