广西钦州市红树林资源特点分析和保护建议

Characteristics Analysis and Protection Suggestions of Mangrove Resources in Qinzhou City,Guangxi

客观分析钦州市红树林资源现状。以钦州市第三次国土调查成果和钦州市2019年度森林资源管理“一张图”年度更新成果数据作为基础,结合实地调查,对钦州市红树林资源面积、自然度、优势种、分布特点、群落类型和特点进行分析。结果表明,钦州市红树林土地总面积3 683.634 7 hm^(2),其中红树林面积3 595.375 5 hm^(2),占总面积97.60%;红树林宜林地面积80.532 8 hm^(2),占总面积2.20%;红树林苗圃地面积7.726 4 hm^(2),占总面积0.20%。红树林自然度为Ⅲ级:99.517 6 hm^(2),占红树林总面积2.77%;Ⅳ级:654.716 4 hm^(2),占红树林总面积的18.21%;Ⅴ级:2 841.141 5 hm^(2),占红树林总面积的79.02%。钦州市内共有红树植物13科17种,包括真红树植物8科10种,半红树6科7种,优势树种5种。钦州市红树林分布着14种不同群落类型,其中桐花树+秋茄群落分布面积最大。钦州市红树林土地总面积与2013年相比保持稳定增长,且自然度等级高,红树林树种和群落类型多样。

To analyze the current situation of mangrove resources in Qinzhou City,this paper is based on the results of the third national land survey in Qinzhou City and the annual update data of the“One Map”of forest resource management in 2019.It analyzes the area,naturalness,dominant species,distribution characteristics,community types,and characteristics of mangrove resources in Qinzhou City,combining them with the field survey results.The results show that the total area of mangrove land in Qinzhou City is 3683.6347 hm^(2),of which the mangrove area is 3595.3755 hm^(2),accounting for 97.60%of the total area.The suitable forest area for mangrove forests is 80.5328 hm^(2),accounting for 2.20%of the total area.The mangrove nursery area is 7.7264 hm^(2),accounting for 0.20%of the total area.The natural degree of mangroves is Grade III:99.5176 hm^(2),accounting for 2.77%of the total area of mangroves.Grade IV:654.7164 hm^(2),accounting for 18.21%of the total mangrove area.Class V:2841.1415 hm^(2),accounting for 79.02%of the total mangrove area.There are 13 families and 17 species of mangrove plants in the area,including 8 families and 10 species of true mangrove plants,6 families and 7 species of semi-mangroves.There are 5 dominant tree species and 14 different community types distributed with the Aegiceras corniculatum+Kandelia candel community having the largest distributiong area.The total area of mangrove land in Qinzhou City has shown stable growth compared to 2013,with a high level of naturalness and a diverse range of mangrove tree species and community types.