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一、青龙山自然概况和建国后的造林情况青龙山位于南京市东郊.它的范围涉及江宁县的汤山、其林、上坊、淳化、上峰等公社.其山地总的特点是:母岩均为石灰岩,岩石裸露,土层浅薄,树木稀少.1.土壤 根据最近对部分地区的土壤调查和对汤山公社寺庄朱砂洞,青林乌鸦山、石浪山,汤山狼山,湖山棒锤山进行土壤采样分析,该山地为山地黄棕壤,质地粉砂.土壤中有机质含量在4.6—5.29%,速效磷含量在4—8PPm,速效钾含量在100PPm以上,PH7—8.5(详见表1).
I. Overview of Qinglongshan Nature and Situation of Afforestation after the Founding of the People’s Republic of China Qinglongshan is located in the eastern outskirts of Nanjing City and covers the communes of Tangshan, Shanglin, Shangfang, Chunhua and Shangfeng in Jiangning County, The mother rocks are limestone, the rock is bare, the soil is shallow and the trees are scarce. (1) Soil According to the recent soil survey in some areas and the Tangshan Zhuangzhuang Grottoes Temple Grottoes, Qingliang Wushan, Sholangshan, Tangshan Langshan, Hammer Mountain soil sampling and analysis, the mountain is yellow mountain brown soil, texture silt soil organic matter content of 4.6-5.29%, available phosphorus content of 4-8PPm, available potassium content above 100PPm, PH7-8.5 (see Table 1).