Assessment of ecosystem health in grassland-desert ecotone in northern Ordos: a case study of Ten Tributaries Basin

doi:10.7522/j.issn.1000-694X.2019.00105

Journal of Desert Research ›› 2020, Vol. 40 ›› Issue (1): 187-194.DOI: 10.7522/j.issn.1000-694X.2019.00105

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Assessment of ecosystem health in grassland-desert ecotone in northern Ordos: a case study of Ten Tributaries Basin

Bai Xuelian¹, Wang Lixiang¹, Ji Shuxin¹, Chen Zhengxin², Chang Xueli¹

1. School of Resources and Environmental Engineering, Ludong University, Yantai 264025, Shandong, China;
2. Water Conservancy Science Research Institute of Inner Mongolia, Hohhot 010051, China

Received:2019-09-16 Revised:2019-11-14 Online:2020-01-20 Published:2020-01-18

Abstract

Abstract: Ecosystem health was one of the main fields of ecology in landscape and regional scale. It was an effective method to evaluate ecosystem health by using remote sensing to interpret the change of ecosystem pattern. Ecosystem health changes of Ten Tributaries Basin in northern Ordos which located in grassland-desert ecotone was representative in the ecotone owing to the disturbance of industry and mining rapid development and the ecological environment management. Under the support of RS and GIS technologies, this paper evaluated the ecosystem health status of Ten Tributaries Basin areas with different types based on the ecosystem (land use) pattern and the corresponding ecosystem service value equivalent profit and loss. The results showed that there was mainly maintained by health areas of ecosystems in Ten Tributaries Basin on the entire scale, the area was 686 925.72 hm² and accounted for 64.66% of total region. And they were health status whether it was south (grassland), central (desert) or north (plain), the proportions of health area were more than 50% in different sections. The Largest Patch index (LPI) values of health status were biggest in these five ecosystem health status whether it was in total or separated environment, Mean Euclidean Nearest Neighbor Index (ENN_MN) values were smallest. The LPI was 62.47% in total region and was 22.42%, 65.04% and 66.25% from north to south respectively. The ENN_MN was 526.51 m in total region and was 293.47 m, 287.14 m and 298.09 m from north to south respectively. All in all, in Ten Tributaries Basin, healthy zones had the absolute advantage of centralized agglomeration structure, especially in south and central area, but the agglomeration in the north was weaker than that in south and central area. The good and deteriorating zones had low frequen-cy discrete distribution, and the distribution frequency in the north was higher than that in south and central area. The distribution frequency in the south was lower and more discrete than that in the central and northern deterioration areas. There was the high frequency discrete distribution in the better and the worse region."

Key words: ecosystem service values, LUCC, landscape pattern, ecotone

CLC Number:

Q148

Bai Xuelian, Wang Lixiang, Ji Shuxin, Chen Zhengxin, Chang Xueli. Assessment of ecosystem health in grassland-desert ecotone in northern Ordos: a case study of Ten Tributaries Basin[J]. Journal of Desert Research, 2020, 40(1): 187-194.

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Assessment of ecosystem health in grassland-desert ecotone in northern Ordos: a case study of Ten Tributaries Basin

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