| 基于InVEST模型的金沙江流域干热河谷区水源涵养功能评估 |
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| 引用本文： | 刘娇,郎学东,苏建荣,刘万德,刘华妍,田宇.基于InVEST模型的金沙江流域干热河谷区水源涵养功能评估[J].生态学报,2021,41(20):8099-8111. |
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| 作者姓名： | 刘娇 郎学东 苏建荣 刘万德 刘华妍 田宇 |
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| 作者单位： | 中国林业科学研究院资源昆虫研究所, 昆明 650224;中国林业科学研究院资源昆虫研究所, 昆明 650224;国家林业和草原局云南普洱森林生态系统国家定位观测研究站, 普洱 665000;中国林业科学研究院森林生态环境与保护研究所国家林业和草原局森林生态环境重点实验室, 北京 100091;中节能生态产品发展研究中心有限公司, 北京 100082 |
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| 基金项目： | 中央级公益性科研院所基本科研业务费专项资金（CAFYBB2019ZD001）；国家林业和草原局野生植物保护管理项目（2020070309）；国家林业和草原局林业科学技术推广项目（2019[49]号） |
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| 摘 要： | 以金沙江流域干热河谷区1990年、2000年、2010年和2019年4期Landsat遥感影像为基础数据，通过目视解译和最大似然相结合的方法进行土地利用类型分类，定量分析金沙江流域干热河谷区土地利用类型的时间变化与空间转移过程；采用InVEST模型，结合气象、土壤和地形等数据评估了1990-2019年金沙江流域干热河谷区及不同土地利用类型的产水功能和水源涵养功能。结果表明：1）1990-2019年金沙江流域干热河谷区土地利用类型以草地、乔木林地和耕地为主；近30年来，灌木林地、建设用地、交通运输用地和水域的面积不断增加，建设用地面积增幅最大；草地、乔木林地、耕地和裸地面积均减少。2）1990-2019年，建设用地、灌木林地、交通运输用地和水域面积的增加来源于草地、耕地和乔木林地。3）金沙江流域干热河谷区多年平均产水量为26.09×108 m3，水源涵养量为7.26×108 m3，产水量的变化与分布直接影响着区域的水源含养量；平均水源涵养能力68.74 mm，呈现上升-下降-上升的波动变化趋势。4）1990-2019年不同土地利用类型的水源涵养量变化明显，不同地类平均水源涵养量的大小依次为耕地 > 草地 > 建设用地 > 乔木林地 > 交通运输用地 > 灌木林地 > 裸地 > 水域。
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| 关 键 词： | 土地利用 水源涵养量 InVEST模型 金沙江流域干热河谷区 |
| 收稿时间： | 2021/1/5 0:00:00 |
| 修稿时间： | 2021/9/6 0:00:00 |
Evaluation of water conservation function in the dry-hot valley area of Jinsha River Basin based on InVEST model |
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| LIU Jiao,LANG Xuedong,SU Jianrong,LIU Wande,LIU Huayan,TIAN Yu.Evaluation of water conservation function in the dry-hot valley area of Jinsha River Basin based on InVEST model[J].Acta Ecologica Sinica,2021,41(20):8099-8111. |
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| Authors: | LIU Jiao LANG Xuedong SU Jianrong LIU Wande LIU Huayan TIAN Yu |
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| Institution: | Research Institute of Resource Insects, Chinese Academy of Forestry, Kunming 650224, China;Research Institute of Resource Insects, Chinese Academy of Forestry, Kunming 650224, China;Pu''er Forest Ecosystem Research Station, National Forestry and Grassland Administration of China, Pu''er 665000, China;Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Key Laboratory of Forest Ecology and Environment of National Forestry and Grassland Administration, Beijing 100091, China; China Energy Conservation Ecological Product Development Research Center Compangy Limited, Beijing 100082, China |
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| Abstract: | Using Landsat remote sensing images in 1990, 2000, 2010 and 2019, land use types in the dry-hot valley area of Jinsha River Basin are classified by combining visual interpretation with maximum likelihood, and the spatiotemporal change and transfer process of land use types in the dry-hot valley area of Jinsha River Basin are also studied. The InVEST model combining meteorological, soil and topographic data are used to evaluate the water-producing and water-conserving function of different land use types in the dry-hot valley area of Jinsha River Basin from 1990 to 2019. The main conclusions are as follows:(1) from 1990 to 2019, grassland, forestland and cultivated land were the main types of land use in the dry-hot valley area of Jinsha River Basin. In the past 30 years, the area of shrubland, construction land, transportation land and water area has been increasing continuously and the area of grassland, forestland, cultivated land and bareland has been decreased. (2) The area increase in construction land, shrubland, transportation land and water area came from grassland, farmland and forestland from 1990 to 2019. (3) In the dry-hot valley area of Jinsha River Basin, the annual average water yield was 26.09×108 m3, the water conservation amount was 7.26×108 m3, and the average water conservation capacity was 68.74 mm showing a fluctuation of up-down-up. (4) From 1990 to 2019, the water conservation amount of different land use types changed significantly, and the average water conservation amount of different land types was from large to small:farmland > grassland > construction land > forestland > transportation land > shrubland > bareland > water area. |
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| Keywords: | land use water yield InVEST model the dry-hot valley area of Jinsha River Basin |
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