连云港市云台山宜林荒山立地质量分类及评价

以江苏省连云港市云台山22个宜林荒山地段为研究对象,共选取了16个立地因子,将其分成宏观因子和微观因子分别进行立地质量分类及评价,最后再综合起来评价。评价结果表明,22个地段最终分成5类。第1类主要特征为土层中上偏厚,宏观立地质量相对较好,土壤质量中等,包括2个地段;第2类为土层中上偏厚,宏观立地质量相对较好,土壤质量差,包括4个地段;第3类为土层中下偏薄,宏观立地质量相对一般,土壤质量中等,包括7个地段;第4类为土层中下偏薄,宏观立地质量相对一般,土壤质量差,包括7个地段;第5类主为土层非常薄,宏观立地质量很差,土壤质量中等,包括2个地段。综合分析表明,研究区立地质量整体不高,今后绿化造林任务十分艰巨。

Site Quality Classification and Assessment in Barren Hills for Suitable Afforestation in Yuntai Mountains of Lianyungang City

By taking the 22 barren hills for suitable afforestation in the Yuntai Mountains of Lianyungang City as the research object, 16 site factors were selected and divided into macroscopic and microcosmic factors to conduct site quality classification and assessment, respectively. In the end, the classification and assessment results were combined. Results are as follows: The 22 hills could be divided into five types. The main features of the first type, consisting of 2 hills, had a medium or superior thickness of soil layer, relatively fine site quality of macroscopic factor and medium soil quality; the second type, consisting of 4 hills, a medium or superior thickness of soil layer, relatively fine site quality of macroscopic factor and poor soil quality; the third type, consisting of 7 hills, a medium or inferior thickness of soil layer, relatively medium site quality of macroscopic factor and medium soil quality; the fourth type, consisting of 7 hills, a medium or inferior thickness of soil layer, relatively medium site quality of macroscopic factor and poor soil quality; and the fifth type, consisting of 2 hills, a very thin thickness of soil layer, relatively very poor site quality of macroscopic factor and medium soil quality. In summary, the site quality in the research area is not fine as a whole, and afforestation will be very difficult in the future.