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为提高东北次生林森林公园景观质量,在吉林市大石门沟森林公园次生林选择典型样地,采取了修枝、去除枯落物、清灌等技术措施对次生林林内进行处理。采用心理物理学派的美景度评价法(SBE)、相关分析和回归分析等方法,确定了次生林样地内景观质量指标和预测模型。结果表明:3种技术措施均能有效提高林内景观质量,清灌措施使林内景观美景度均值从29.8提升到70.3;修枝措施使林内景观美景度均值从38.3提升到58.3;去除枯落物措施使林内景观美景度均值从36.9提升到53.4。对照组美景度的模型如下:M_(SBE)=-49.7+31.2X_(10),空间感(X_(10))为主导因子(P<0.01);清灌组的美景度回归模型:M_(SBE)=-132+56.5X_4,自然程度(X_4)为主导因子(P<0.05);修枝组的美景度回归模型:M_(SBE)=-102.5+58.1X_5,树木排列(X_5)为主导因子(P<0.01);去除枯落物组的美景度回归模型:M_(SBE)=-73.2+39.6X_1,树干形态(X_1)为主导因子(P<0.05)。说明3种措施中提升景观质量效果排序,清灌>修枝>去除枯落物;采取不同的技术措施使原有次生林林内景观结构发生改变,影响景观美景度的主要因子也同时发生的改变。
In order to improve the landscape quality of the secondary forest in northeastern China, secondary vegetation was selected in the secondary forest of Dashihimen Ditch Forest Park in Jilin City. The secondary forests were treated by pruning, removing litter and clearing irrigation. The landscape quality indicators and prediction models of secondary forest plots were determined by means of the psychophysics evaluation method of scenic beauty (SBE), correlation analysis and regression analysis. The results showed that all three kinds of technical measures could effectively improve the landscape quality in the forest, and the average value of landscape beauty in the forest was raised to 70.3 by the clear irrigation measures; the mean value of landscape beauty in the forest was increased to 58.3 by the pruning measures; the measures of removing the litter So that the average forest landscape beauty from 36.9 to 53.4. The beauty degree of the control group was as follows: M SBE = -49.7 + 31.2X 10 and space X 10 as the dominant factor (P <0.01) (SBE) = - 132 + 56.5X_4 and natural degree (X_4) were the dominant factors (P <0.05). The beauty degree regression model of the pruning group was dominated by M SBE = -102.5 + 58.1X_5 and tree arrangement X_5 (P <0.01). The beauty degree regression model for the removal of litter: M SBE = -73.2 + 39.6X_1, trunk shape X_1 was the dominant factor (P <0.05). The results show that the three kinds of measures to improve landscape quality and sort, clear irrigation> pruning> removal of litter; take different technical measures to make the original secondary forest landscape structure changes, the main factors affecting the landscape beauty degrees also change.