广西花山喀斯特峰丛洼地风景林林内景观质量

In-forest landscape quality of karst peak-cluster depression forest in Huashan scenic area, Guangxi

在广西花山喀斯特峰丛洼地内,采集了32个有代表性的风景林林内景观资料,采用SBE法评判景观美景度,运用多元数量化理论Ⅰ模型建立了美景度与15个景观要素之间的关系模型。结果表明:花山风景区喀斯特峰丛洼地风景林林内景观质量在洼地及林缘质量较高,坡地中部、山顶和下部质量一般,存在一定的提升空间;影响林内景观质量的主要因素是林分密度、枯落物、林木排列、林木大小变异、林下层高度和平均树高;美景度值高的林分具有以下一个或几个组合特征,林分密度较小,树体高大,林木大小变异极其明显,林木排列整齐,林下层高度较低且能够覆盖凋落物。研究结果为喀斯特风景林及生态公益林景观质量提升和科学经营提供了建议及理论依据。

A total of 32 representative photos of in-forest landscapes and interrelation material in the karst peak-cluster depression of Huashan scenic area in Guangxi province were collected. Scenic beauty values were acquired by public judgment method, and the relationship models of scenic beauty values and 15 landscape elements were established by using multiple mathematical model.The results showed that the scenic forest landscape quality was high in the karst peak-cluster depression or forest edge, and low on the centre, top and the lower part of the karst peak-cluster depression; the landscape quality has certain promotion space. The main elements affecting the in-forest landscape quality of scenic forest were stand density, litter, forest arrangement, the tree size variation, undergrowth height and average of tree height. The high landscape quality stand has the following one or several combinations of features： the stand density is small, the tree is tall, and tree size variation is extremely obvious in forest, neatly arranged, undergrowth height is lower and it can cover the litter. The results provide suggestions and theoretical basis for the scenic karst forest and ecological forest landscape quality and scientific management.