Assessment of watershed ecosystem health in red-soil region: A case study in Nanxi River
In order to provide scientific supports for watershed sustainable development, operation and management, Nanxi River was selected as a typical red-soil region, and ecosystem health assessment methodology and pressure analysis combining remote sensing (RS), geographic information system (GIS) and mul...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Zhejiang University Press
2018-01-01
|
| Series: | 浙江大学学报. 农业与生命科学版 |
| Subjects: | |
| Online Access: | https://www.academax.com/doi/10.3785/j.issn.1008-9209.2017.05.311 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849419326656872448 |
|---|---|
| author | YOU Shixue LI Peng CAI Jingbo HUANG Zhou DENG Jinsong ZHOU Mengmeng HU Shuigen |
| author_facet | YOU Shixue LI Peng CAI Jingbo HUANG Zhou DENG Jinsong ZHOU Mengmeng HU Shuigen |
| author_sort | YOU Shixue |
| collection | DOAJ |
| description | In order to provide scientific supports for watershed sustainable development, operation and management, Nanxi River was selected as a typical red-soil region, and ecosystem health assessment methodology and pressure analysis combining remote sensing (RS), geographic information system (GIS) and multi-index were applied. The ecosystem health assessment was classified into two categories: water area and terrestrial area, and the indices were divided into six sections including habitat structure, aquatic organisms, ecological pressure of water area and ecological patterns, ecological function, ecological pressure of terrestrial area, which consisted of 16 sub-indicators. The results showed that the health condition of the study area was good, and only the aquatic organisms and ecological function were in ordinary condition. Among them, 83.3% of sub-basins were in good condition, while the others were in ordinary condition, and all of them were located in the downstream areas. Human disturbance was the major reason of the degradation of watershed ecosystem health, such as rapid growth of urban land areas, excessive livestock breeding and fishing. In order to improve the health conditions, more attention should be paid to adjusting the scope of the conservation areas, controlling pollution from point and nonpoint sources as well as protecting the biodiversity. The proposed assessment methodology can comprehensively indicate the health condition of Nanxi River. This case study could make a contribution to guiding the watershed management in ecologically fragile areas, and ensuring the water ecological health of the basin and its downriver. |
| format | Article |
| id | doaj-art-fd7a882d161248ff8d98ddd4639ba7f7 |
| institution | Kabale University |
| issn | 1008-9209 2097-5155 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Zhejiang University Press |
| record_format | Article |
| series | 浙江大学学报. 农业与生命科学版 |
| spelling | doaj-art-fd7a882d161248ff8d98ddd4639ba7f72025-08-20T03:32:09ZengZhejiang University Press浙江大学学报. 农业与生命科学版1008-92092097-51552018-01-0144677410.3785/j.issn.1008-9209.2017.05.31110089209Assessment of watershed ecosystem health in red-soil region: A case study in Nanxi RiverYOU ShixueLI PengCAI JingboHUANG ZhouDENG JinsongZHOU MengmengHU ShuigenIn order to provide scientific supports for watershed sustainable development, operation and management, Nanxi River was selected as a typical red-soil region, and ecosystem health assessment methodology and pressure analysis combining remote sensing (RS), geographic information system (GIS) and multi-index were applied. The ecosystem health assessment was classified into two categories: water area and terrestrial area, and the indices were divided into six sections including habitat structure, aquatic organisms, ecological pressure of water area and ecological patterns, ecological function, ecological pressure of terrestrial area, which consisted of 16 sub-indicators. The results showed that the health condition of the study area was good, and only the aquatic organisms and ecological function were in ordinary condition. Among them, 83.3% of sub-basins were in good condition, while the others were in ordinary condition, and all of them were located in the downstream areas. Human disturbance was the major reason of the degradation of watershed ecosystem health, such as rapid growth of urban land areas, excessive livestock breeding and fishing. In order to improve the health conditions, more attention should be paid to adjusting the scope of the conservation areas, controlling pollution from point and nonpoint sources as well as protecting the biodiversity. The proposed assessment methodology can comprehensively indicate the health condition of Nanxi River. This case study could make a contribution to guiding the watershed management in ecologically fragile areas, and ensuring the water ecological health of the basin and its downriver.https://www.academax.com/doi/10.3785/j.issn.1008-9209.2017.05.311watershedecosystem healthNanxi Riverremote sensingmulti-index |
| spellingShingle | YOU Shixue LI Peng CAI Jingbo HUANG Zhou DENG Jinsong ZHOU Mengmeng HU Shuigen Assessment of watershed ecosystem health in red-soil region: A case study in Nanxi River 浙江大学学报. 农业与生命科学版 watershed ecosystem health Nanxi River remote sensing multi-index |
| title | Assessment of watershed ecosystem health in red-soil region: A case study in Nanxi River |
| title_full | Assessment of watershed ecosystem health in red-soil region: A case study in Nanxi River |
| title_fullStr | Assessment of watershed ecosystem health in red-soil region: A case study in Nanxi River |
| title_full_unstemmed | Assessment of watershed ecosystem health in red-soil region: A case study in Nanxi River |
| title_short | Assessment of watershed ecosystem health in red-soil region: A case study in Nanxi River |
| title_sort | assessment of watershed ecosystem health in red soil region a case study in nanxi river |
| topic | watershed ecosystem health Nanxi River remote sensing multi-index |
| url | https://www.academax.com/doi/10.3785/j.issn.1008-9209.2017.05.311 |
| work_keys_str_mv | AT youshixue assessmentofwatershedecosystemhealthinredsoilregionacasestudyinnanxiriver AT lipeng assessmentofwatershedecosystemhealthinredsoilregionacasestudyinnanxiriver AT caijingbo assessmentofwatershedecosystemhealthinredsoilregionacasestudyinnanxiriver AT huangzhou assessmentofwatershedecosystemhealthinredsoilregionacasestudyinnanxiriver AT dengjinsong assessmentofwatershedecosystemhealthinredsoilregionacasestudyinnanxiriver AT zhoumengmeng assessmentofwatershedecosystemhealthinredsoilregionacasestudyinnanxiriver AT hushuigen assessmentofwatershedecosystemhealthinredsoilregionacasestudyinnanxiriver |