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Luo Y, Ji W, Wu W, Liao Y, Wei X, Yang Y, Dong G, Ma Q, Yi S, Sun Y. Grassland health assessment based on indicators monitored by UAVs: a case study at a household scale. Front Plant Sci 2023; 14:1150859. [PMID: 37799559 PMCID: PMC10548208 DOI: 10.3389/fpls.2023.1150859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 09/04/2023] [Indexed: 10/07/2023]
Abstract
Grassland health assessment (GHA) is a bridge of study and management of grassland ecosystem. However, there is no standardized quantitative indicators and long-term monitor methods for GHA at a large scale, which may hinder theoretical study and practical application of GHA. In this study, along with previous concept and practices (i.e., CVOR, the integrated indexes of condition, vigor, organization and resilience), we proposed an assessment system based on the indicators monitored by unmanned aerial vehicles (UAVs)-UAVCVOR, and tested the feasibility of UAVCVOR at typical household pastures on the Qinghai-Tibetan Plateau, China. Our findings show that: (1) the key indicators of GHA could be measured directly or represented by the relative counterpart indicators that monitored by UAVs, (2) there was a significantly linear relationship between CVOR estimated by field- and UAV-based data, and (3) the CVOR decreased along with the increasing grazing intensity nonlinearly, and there are similar tendencies of CVOR that estimated by the two methods. These findings suggest that UAVs is suitable for GHA efficiently and correctly, which will be useful for the protection and sustainable management of grasslands.
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Affiliation(s)
- Yifei Luo
- Institute of Fragile Eco-environment, School of Geographic Science, Nantong University, Nantong, China
| | - Wenxiang Ji
- Institute of Fragile Eco-environment, School of Geographic Science, Nantong University, Nantong, China
| | - Wenjun Wu
- Institute of Fragile Eco-environment, School of Geographic Science, Nantong University, Nantong, China
| | - Yafang Liao
- Institute of Fragile Eco-environment, School of Geographic Science, Nantong University, Nantong, China
| | - Xinyi Wei
- Institute of Fragile Eco-environment, School of Geographic Science, Nantong University, Nantong, China
| | - Yudie Yang
- Institute of Fragile Eco-environment, School of Geographic Science, Nantong University, Nantong, China
| | - Guoqiang Dong
- Institute of Fragile Eco-environment, School of Geographic Science, Nantong University, Nantong, China
| | - Qingshan Ma
- State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Shuhua Yi
- Institute of Fragile Eco-environment, School of Geographic Science, Nantong University, Nantong, China
| | - Yi Sun
- Institute of Fragile Eco-environment, School of Geographic Science, Nantong University, Nantong, China
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