基于InVEST模型的生境质量评估--以横断山小江流域为例
Habitat Quality Evaluation Based on InVEST Model-A Case Study of Xiaojiang Watershed of Hengduan Mountains
徐建宁 1孙建国 2陈海鹏1
作者信息
- 1. 兰州交通大学测绘与地理信息学院，甘肃兰州730070; 甘肃省地理国情监测工程实验室，甘肃兰州730070; 中国科学院地理科学与资源研究所，北京100101; 中国科学院陆地表层格局与模拟重点实验室，北京100101
- 2. 兰州交通大学测绘与地理信息学院，甘肃兰州730070; 甘肃省地理国情监测工程实验室，甘肃兰州730070
- 折叠
摘要
[目的]评估横断山小江流域生境质量，为改善流域生态环境和优化土地利用现状提供理论支持。[方法]采用InVEST模型，利用道路、农田、城市、乡镇及土地利用等数据，从生物多样性的角度，对横断山区小江流域的生境质量进行了量化评估，并分析其空间分布特征和区域差异。[结果]①受人类活动的影响，小江流域生境质量普遍偏低，流域中部区域退化严重。②土地利用类型和覆被对生境质量有很大的影响作用，还林还草政策可有效的缓解流域生境恶化现象。③小江流域生境质量具有明显的垂直空间异质性，生态环境的保护和社会经济的发展要因地制宜。[结论]该研究可为小江流域的生态保护和可持续发展提供科学依据和规划指南。
Abstract
Objective] The aim was to evaluate habitat quality of Xiaojiang watershed of Hengduan Mountains,to provide theoretical support for improving eco-environment and optimizing land use status.[Method] The InVEST model was used to quantify and evaluate the habitat quality in Xiaojiang watershed of Henduan Mountains by using theland use data,including roads,farmlands,cities and towns.In addition,the spatial distribu-tion features and regional differences were analyzed.[Result] The results showed that:① The habitat quality was generally low and the heavily degraded area was in the center of the river basin.②Land use and land cover type had a significant impact on habitat quality,and the strategy of returning the grain plots to forestry and grass had mitigated the deterioration of habitat quality effectively .③ The habitat quality in Xiaojiang wa-tershed showed the heterogeneity of vertical space .The protection of ecological environment and development of social economy should be acted according to local conditions.[Conclusion] The study can provide scientific basis and planning guidance for ecology protection and sustainable development of Xiaojiang watershed.
关键词
生境质量/InVEST模型/小江流域/垂直空间异质性Key words
Habitat quality/InVEST model/Xiaojiang watershed/Heterogeneity of vertical space引用本文复制引用
基金项目
国家科技支撑计划(2013BAC03B04)
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据