摘要
小流域内土地的合理利用不仅关系到当地生产的发展,也关系到水土保持、植被恢复等环境的建设。通过对北京市土门西沟小流域内各树种生长状况和流域内自然条件的调查和研究分析,找出影响林种生长的限制因子,然后利用G IS作辅助手段,将坡向和坡度分别与经济林进行叠加计算,分析流域土地利用的合理性。研究结果表明:在北京市山区小流域内,坡向和坡度是影响各林种生长的主要限制因子;运用G IS叠加计算后的结果划分出土地利用合理性的程度和数量,为小流域内林种、树种的改造和土地合理利用提供决策依据。
The rational land use in watershed has relations not only with the local economy development, but also with the environment managements such as soil and water conservation and vegetation restore. Based on the investigation of trees growth and natural environmental factors, the rationality of land use was analyzed using GIS as an assistant tool in the water-shed of Tureen West Valley in Beijing. The results showed that slope and aspect were the main limitations to trees growth in the watershed. And the extent and amount of rational land use in the watershed were identified by overlapping slope and as- pect with economic forest with GIS. These results could provide scientific bases for improving stand configuration and ration- al land use in the watershed.
出处
《林业科技开发》
2008年第1期66-70,共5页
China Forestry Science and Technology
基金
北京市水务局项目“密云水库流域水土流失综合防治体系及示范推广研究。”
