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湖南省隆回县南部系丘陵岗地,人多山少(人平均仅1.43亩),总面积为200.8万亩,占全县总面积的46%。基岩绝大部分系石灰岩,岩溶发育,其中石灰岩裸露地区达123万亩,占61.5%是涟邵石灰岩丘陵的组成部分之一。海拔300—500米,土壤粘重,肥力中等,厚薄不一,呈中性或微碱、微酸性反应。气候温和、阳光充足。年平均气温16.9℃,≥10℃积温5145℃,降雨量1293.3毫米,集中在4—6月,春多低温霉雨,秋季酷热干旱。适宜阳性耐干旱树种生长。据1975年森林资源调查,县南部石灰岩面裸露60%以上的石山面积达69197亩,按国家规定被划为“不宜农林牧的特用地”。本文单就这些岩石裸露山地能否利用问题进行剖析。
The southern part of Longhui County in Hunan Province is a hilly hillock with a small number of people (an average of only 1.43 mu) with a total area of 200.8 mu, accounting for 46% of the total area of the county. The vast majority of bedrock limestone karst development, of which limestone bare area of 123 mu, accounting for 61.5% of Lian Shao limestone hills one of the components. 300-500 meters above sea level, soil sticky, medium fertility, thickness varies, was neutral or slightly alkaline, slightly acidic reaction. The climate is mild and sunny. The annual average temperature of 16.9 ℃, ≥ 10 ℃ accumulated temperature of 5145 ℃, rainfall of 1293.3 mm, concentrated in the April-June, spring and more cold moldy autumn, hot and dry. Suitable for positive drought-resistant tree species growth. According to the 1975 Forest Resources Survey, the rocky mountain area of more than 60% of the exposed limestone surface in the county reaches 69,197 mu, which is designated as “special land not suitable for agriculture, forestry and animal husbandry” according to state regulations. This article alone on these rock bare mountain can use the problem analysis.