Based on the collection data of the plants, water quality, soils of Dianchi Lake, and combined high resolution satellite remote sensing images, the paper analyzed evolution law of Dianchi Lake wetland, and evaluated t...Based on the collection data of the plants, water quality, soils of Dianchi Lake, and combined high resolution satellite remote sensing images, the paper analyzed evolution law of Dianchi Lake wetland, and evaluated the benefi ts of Dianchi Lake wetland from the perspective of economy, environment, society and zoology. The results showed that the area of wetland and plant community account for 92.2% in lakeside zone, the increase was 141.4% compared with the value of 2007. The total value of evaluated benefi ts of Dianchi wetland increased 3.439 billion yuan, and ecological environment improved gradually.展开更多
Wetland plant communities in the plateau lakes of Yunnan Province, China, have decreased significantly over the past decades. To better understand this degradation, we analyzed the processes and characteristics of cha...Wetland plant communities in the plateau lakes of Yunnan Province, China, have decreased significantly over the past decades. To better understand this degradation, we analyzed the processes and characteristics of changes in wetland plant communities in two of the largest lakes in Yunnan Province, Dianchi and Erhai lakes. We collected records of native and alien plant communities in the two lakes from literature published from the 1950 s to current period. We calculated plant community types and their area in some historical periods when related data were reported, and analyzed the relationship between changes in plant communities and water pollution. InDianchi Lake, 12 community types of native plant communities, covering over 80% of the surface in the 1950 s and 1960 s, were reduced to four types covering 2.4% by the late 2000 s. Alien plant communities started to appear in the lake in the late 1970 s, and have since come to cover 4.9% of the lake surface,thereby becoming dominant. In Erhai Lake, 16 community types of native plant communities,covering 47.1% of the lake surface in the late 1970 s,declined to 10 community types, covering 9.3% of the surface, by the late 2000 s. Alien plant communities appeared in the middle 1980 s, and at present cover 0.7% of the surface area. It was indicated that changes in plant communities were significant related to water eutrophication. The area occupied by native and alien plant communities was, respectively, negatively andpositively related to the content of nutrients in water.This showed lacustrine pollution played an important role in native plant loss and alien plant invasion in the two plateau lakes.展开更多
文摘Based on the collection data of the plants, water quality, soils of Dianchi Lake, and combined high resolution satellite remote sensing images, the paper analyzed evolution law of Dianchi Lake wetland, and evaluated the benefi ts of Dianchi Lake wetland from the perspective of economy, environment, society and zoology. The results showed that the area of wetland and plant community account for 92.2% in lakeside zone, the increase was 141.4% compared with the value of 2007. The total value of evaluated benefi ts of Dianchi wetland increased 3.439 billion yuan, and ecological environment improved gradually.
基金funded by the National Natural Science Foundation of China(Grant No.31560092,U0933601)National Scientific and Technological Basic Work of China(No.2012FY110300)+1 种基金Science Fund of China’s Yunnan Government(Grant No.2015BB018,2009CC024)the State Key Laboratory of Phytochemistry and Plant Resources in West China(Grant No.P2015-KF11)
文摘Wetland plant communities in the plateau lakes of Yunnan Province, China, have decreased significantly over the past decades. To better understand this degradation, we analyzed the processes and characteristics of changes in wetland plant communities in two of the largest lakes in Yunnan Province, Dianchi and Erhai lakes. We collected records of native and alien plant communities in the two lakes from literature published from the 1950 s to current period. We calculated plant community types and their area in some historical periods when related data were reported, and analyzed the relationship between changes in plant communities and water pollution. InDianchi Lake, 12 community types of native plant communities, covering over 80% of the surface in the 1950 s and 1960 s, were reduced to four types covering 2.4% by the late 2000 s. Alien plant communities started to appear in the lake in the late 1970 s, and have since come to cover 4.9% of the lake surface,thereby becoming dominant. In Erhai Lake, 16 community types of native plant communities,covering 47.1% of the lake surface in the late 1970 s,declined to 10 community types, covering 9.3% of the surface, by the late 2000 s. Alien plant communities appeared in the middle 1980 s, and at present cover 0.7% of the surface area. It was indicated that changes in plant communities were significant related to water eutrophication. The area occupied by native and alien plant communities was, respectively, negatively andpositively related to the content of nutrients in water.This showed lacustrine pollution played an important role in native plant loss and alien plant invasion in the two plateau lakes.
