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Your search keyword '"Taihu Lake area"' showing total 2 results
Start Over Descriptor "Taihu Lake area" Topic land use
2 results on '"Taihu Lake area"'

1. Effects of riparian land use changes on soil aggregates and organic carbon.

Author

Qian, Jin, Liu, Jingjing, Wang, Peifang, Wang, Chao, Hu, Jing, Li, Kun, Lu, Bianhe, Tian, Xin, and Guan, Wenyi

Subjects
*SOIL structure, *LAND use, *ECOSYSTEMS, *PLANT residues, *ACQUISITION of data
Abstract

Soil aggregation processes play a crucial role in re-establishing soil structure and function, and protecting soil organic carbon (SOC) to sustain soil fertility and quality. There is a strong interest in preventing soil erosion in the interface of terrestrial and aquatic ecosystem. The relationship between soil aggregates and SOC in riparian zones is not as well studied as in terrestrial ecosystems. The aim of this study was to investigate the effects of conversion of abandoned lands to cultivated lands on organic carbon (C) and soil structure. Soil samples and plant residues were collected from abandoned lands and cultivated lands which had been converted from abandoned lands over 10 years ago. Results show that SOC content and storage increases by 1.64 times and 6.75 Mg hm −2 , respectively, after the land use change. For cultivated lands, 11.94% of macro-aggregates (>2 mm) were broken into micro-aggregates (<2 mm), resulting in the mean weight diameter (MWD) and geometric mean diameter (GMD) decreases of 1.01 and 1.11 mm, respectively, while the fractal dimension (FD) increased by 0.28. The SOC content of micro-aggregates (10.88–15.02 g kg −1 ) was higher than that of macro-aggregates (10.10–11.63 g kg −1 ) for both abandoned and cultivated lands. The SOC content of micro-aggregates for cultivated lands (14.46–15.02 g kg −1 ) was higher than abandoned lands (10.80–11.14 g kg −1 ). The content of microbial biomass carbon (MBC) increased by 1.52 times due to increases in root biomass and the plant residue returned to soil, which were mainly caused by the changes in cultivation practices and soil water conditions. Our results show that total SOC storage increased by the land use conversion from abandoned to cultivated lands, indicating that planting aquatic plants might be an effective method of preventing C loss from riparian ecosystems. The findings of this study provided insights into the changes in soil aggregates and soil C sequestration following the land use changes in riparian areas. [ABSTRACT FROM AUTHOR]

Published
2018
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2. Comprehensive Evaluation and Quantitative Research on the Living Protection of Traditional Villages from the Perspective of 'Production–Living–Ecology'

Author

Jinxiu Wu, Lingyu Kong, Wei Wang, Xiaodong Xu, and Meiying Zhang

Subjects
Process (engineering), Ecology (disciplines), 0211 other engineering and technologies, 02 engineering and technology, 010501 environmental sciences, Vitality, 01 natural sciences, traditional villages, Human settlement, Production (economics), 0105 earth and related environmental sciences, Nature and Landscape Conservation, Global and Planetary Change, Ecology, Land use, Taihu Lake area, Perspective (graphical), coupling coordination degree, 021107 urban & regional planning, Agriculture, production–living–ecology integration, living protection, Geography, Quantitative analysis (finance)
Abstract

Aiming at the current isolated, static protection method of traditional villages, a comprehensive evaluation system for the living protection of traditional villages has been constructed based on the land use function integration concept in “Production–Living–Ecology” (PLE). By combining the “horizontal” PLE coupling coordination analysis with the “vertical” correlation analysis of the elements at each layer, the comprehensive evaluation and quantitative analysis of six traditional villages of different types and grades in the Taihu Lake area are carried out to quantitatively reflect the interactive relationship and integration mechanism of PLE in traditional villages. The results show that: (1) The PLE development of traditional villages is a dynamic process. Even if the villages are close in the PLE score, they may be in different stages of PLE development and coupling coordination type. (2) The “living” function has the highest correlation with the coupling coordination degree of PLE, and it acts as the engine and bridge of benign interaction between the PLE. (3) Even if the national traditional villages have a favorable ecology background, they may not get high scores, or even fail in the PLE score. (4) Among the sub-indicators, the natural environmental characteristics, the ecological vitality of political organizations, and the level of human settlement facilities show a significant linear correlation with the PLE score. Additionally, the ecological vitality of political organizations is the strongest. It can be therefore concluded that a positive policy organization is an important guarantee for realizing the PLE integration of traditional villages.

Published
2021

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