再论华南坡地利用与改良

本文对作者《华南坡地利用与改良:重要性与可行性》一文在三个方面作一些补充:1.进一步阐述坡地的重要性,并特别从可能出现的全球性变暖的因果加以说明。2.对前文所提坡地改良与利用方针概括为:"主要采取植物(生物)措施,最大限度地提高以一个坡面或小流域为单位的坡地持续生产力",并对此作此较系统的论述。3.在前文基础上补充有关科研工作的意见。

TURTHER OBSERVATIONS ON SOUTH CHINA SLOPELAND UTILIZATION AND AMELIORATION

The problem under consideration is further discussed under three sections.In the first section,the economic significance of slopelands in South Chins is re-examined in the light of additional information.Special reference is made to the possible reduction of arable laad resulting from the rise of sealevel that may occur as a consequence of global warming.The present productivity of land on the slopes of hills and mountains is very low.Higher productivity will no doubt lead to a decrea.se of CO₂ in the atmosphere.As the slopes are mostly well drained,the generation of other "greenhouse" gases can be easily kept to a minimum.