A Study on the Spatio-Temporal Land-Use Changes and Ecological Response of the Dongting Lake Catchment

Catchments support the survival and development of humans in a region and investigating the mechanism of land-use changes and ecological responses in catchments is of great significance for improving watershed ecological service functions. Taking the Dongting Lake catchment as the study area, this s...

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Autores principales:	Nan Yang, Wenbo Mo, Maohuang Li, Xian Zhang, Min Chen, Feng Li, Wanchao Gao
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	land-use change ecosystem service value conversion matrix equivalent factor method Dongting lake catchment Geography (General) G1-922
Acceso en línea:	https://doaj.org/article/5b4e70ea111f4c7e8e6b9c00ee438879
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spelling	oai:doaj.org-article:5b4e70ea111f4c7e8e6b9c00ee4388792021-11-25T17:52:41ZA Study on the Spatio-Temporal Land-Use Changes and Ecological Response of the Dongting Lake Catchment10.3390/ijgi101107162220-9964https://doaj.org/article/5b4e70ea111f4c7e8e6b9c00ee4388792021-10-01T00:00:00Zhttps://www.mdpi.com/2220-9964/10/11/716https://doaj.org/toc/2220-9964Catchments support the survival and development of humans in a region and investigating the mechanism of land-use changes and ecological responses in catchments is of great significance for improving watershed ecological service functions. Taking the Dongting Lake catchment as the study area, this study used spatial analysis, an ecosystem service value (ESV)-equivalent factor method, grid method, and other spatial analysis methods to explore land-use changes and the corresponding ecological service value response from 1990 to 2015, to provide an important theoretical reference for ecological service management, regional planning and ecological service function improvement in the Dongting Lake Basin. Our findings are as follows: (1) apart from a trend of notable expansion in construction land, the land-use types in the Dongting Lake catchment did not change significantly. (2) Grassland had the fastest transfer-out rate; forest land were cultivated land comparably transferred to each other with a larger area, where both were simultaneously and continuously transferred out as construction land; water areas, wetlands, and construction land were all transferred in, where construction land had the fastest transfer rate. (3) The total ESV of the watershed first increased and then decreased, but the overall change was small; spatially, the wetlands and water areas had a higher ESV, whereas construction land and cultivated land had lower ESVs. (4) Soil protection, gas exchange, climate regulation, biodiversity, and water conservation are always the main ecosystem service functions of a catchment, where the service function of the catchment ecosystem is greater than the productive function. The increase in construction land was the main factor for the increased differences between the spatial distributions of the soil, raw materials, biodiversity protection, and gas exchange.Nan YangWenbo MoMaohuang LiXian ZhangMin ChenFeng LiWanchao GaoMDPI AGarticleland-use changeecosystem service valueconversion matrixequivalent factor methodDongting lake catchmentGeography (General)G1-922ENISPRS International Journal of Geo-Information, Vol 10, Iss 716, p 716 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	land-use change ecosystem service value conversion matrix equivalent factor method Dongting lake catchment Geography (General) G1-922
spellingShingle	land-use change ecosystem service value conversion matrix equivalent factor method Dongting lake catchment Geography (General) G1-922 Nan Yang Wenbo Mo Maohuang Li Xian Zhang Min Chen Feng Li Wanchao Gao A Study on the Spatio-Temporal Land-Use Changes and Ecological Response of the Dongting Lake Catchment
description	Catchments support the survival and development of humans in a region and investigating the mechanism of land-use changes and ecological responses in catchments is of great significance for improving watershed ecological service functions. Taking the Dongting Lake catchment as the study area, this study used spatial analysis, an ecosystem service value (ESV)-equivalent factor method, grid method, and other spatial analysis methods to explore land-use changes and the corresponding ecological service value response from 1990 to 2015, to provide an important theoretical reference for ecological service management, regional planning and ecological service function improvement in the Dongting Lake Basin. Our findings are as follows: (1) apart from a trend of notable expansion in construction land, the land-use types in the Dongting Lake catchment did not change significantly. (2) Grassland had the fastest transfer-out rate; forest land were cultivated land comparably transferred to each other with a larger area, where both were simultaneously and continuously transferred out as construction land; water areas, wetlands, and construction land were all transferred in, where construction land had the fastest transfer rate. (3) The total ESV of the watershed first increased and then decreased, but the overall change was small; spatially, the wetlands and water areas had a higher ESV, whereas construction land and cultivated land had lower ESVs. (4) Soil protection, gas exchange, climate regulation, biodiversity, and water conservation are always the main ecosystem service functions of a catchment, where the service function of the catchment ecosystem is greater than the productive function. The increase in construction land was the main factor for the increased differences between the spatial distributions of the soil, raw materials, biodiversity protection, and gas exchange.
format	article
author	Nan Yang Wenbo Mo Maohuang Li Xian Zhang Min Chen Feng Li Wanchao Gao
author_facet	Nan Yang Wenbo Mo Maohuang Li Xian Zhang Min Chen Feng Li Wanchao Gao
author_sort	Nan Yang
title	A Study on the Spatio-Temporal Land-Use Changes and Ecological Response of the Dongting Lake Catchment
title_short	A Study on the Spatio-Temporal Land-Use Changes and Ecological Response of the Dongting Lake Catchment
title_full	A Study on the Spatio-Temporal Land-Use Changes and Ecological Response of the Dongting Lake Catchment
title_fullStr	A Study on the Spatio-Temporal Land-Use Changes and Ecological Response of the Dongting Lake Catchment
title_full_unstemmed	A Study on the Spatio-Temporal Land-Use Changes and Ecological Response of the Dongting Lake Catchment
title_sort	study on the spatio-temporal land-use changes and ecological response of the dongting lake catchment
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/5b4e70ea111f4c7e8e6b9c00ee438879
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A Study on the Spatio-Temporal Land-Use Changes and Ecological Response of the Dongting Lake Catchment

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