桂西北山区耕地详查应注意的几个问题——以广西巴马县为例

MUST PAY ATTENTIONS TO SOME QUESTIONS OF DETAILED ARABLE LAND SURVEY IN MOUNTAIN REGIONS OF NORTHWEST IN GUANGXI ——A Case Study On Bamacounty, Guangxi

1990年广西巴马县土地详查结果表明 ,其耕地面积为 38982hm2 ,而当年的年报统计面积为 10 6 80hm2 ,经进一步查证 ,耕地详查面积过大 ,与实际情况不符 ,其主要反映在耕地构成及分布两个方面。产生耕地详查面积过大的主要原因有 :耕地三级分类含义描述不清和不准确 ;外业调绘技术存在调绘技术人员普遍缺乏遥感知识和航片判读经验、航片典型调绘不够准确等问题 ;耕地年报统计面积偏小。因此 ,桂西北山区在开展新一轮土地资源调查时 ,应注意以下问题 :修改“规定”中耕地某些三级地类的含义 ,根据实际情况 ,把握好石缝地和歇耕地的划分和归属 ;做好技术人员的培训、管理等工作 ,使之熟练、准确地掌握详查技术 ,防止再次将非耕地调绘成耕地。

Result of detailed land survey indicated that the area of detailed arable land survey was 38 982 hm 2 in Bama county in 1990, however, the area of arable land of anual report was 10 680 hm 2 this year. Through checking further,the area of detailed arable land survey was super-large, it didn't tally with the fact, this expression was made chiefly as component of arable land and distribution of arable land. And chief reasons caused by were that a description of arable land's 3 grades classification was not clear or accurate; that the technicians of investigation lacked generally R.S. learning and experience of translating aerial photo, typical investigation of aerial photo was not accurate enough; that the area of arable land of annual report was super-small. On the basis of analytical research, the author puts forward some questions which must be paid in the course of new detailed land resources survey hereafter: modifying arable land's meaning of some 3-grades classification in “stipulations”, and grasping well the divide and the end-result of stone-seam field and rest-arable land according to real conditions; working better on the technicians' training and managing, for them mastering the skills of detailed survey skifully and accuratelly,preventing unarable land being investigated into arable land again.