关键词: 光合特性, 荫蔽栽培, 产量, 水光利用, 亏缺灌溉, 小粒咖啡

Abstract: Combined with principal component analysis and entropy methods, the paper assessed the habitat quality of Taizi River Basin. Correlation analysis and redundancy analysis were used to identify the effects of socioeconomic development and land use pattern on habitat quality. Results indicated that habitat quality across all reaches of Taizi River Basin was 4.35% in good condition, 91.30% in fair condition, and 2.17% in poor condition. The reaches with good habitat quality were mainly located in the upstream of the Taizi River, and those with fair quality in the midstream, and poor quality in the downstream in Anshan. Socioeconomic development and land use pattern were the main factors affecting habitat quality. Habitat quality was negatively correlated with population density, regional GDP per capita, the first and second industry outputs and the ratio of land area for cultivation to construction, whereas it was positively correlated with forest area percentage. Socioeconomic development and land use pattern explained 45.7% and 39.5% of the characteristics of habitat quality, respectively. Our results suggest that the habitat quality in Taizi River Basin may be improved by rationally adjusting industrial structure and optimizing land use pattern.

Key words: Coffea arabica, deficit irrigation, shade cultivation, photosynthetic characteristics, yield, water-radiation use