LI Li,SU Weici,GE Yinjie.Analysis on Water Conservation Capacity of Forest Ecosystem in Chongqing[J].Research of Soil and Water Conservation,2015,22(02):96-100.
重庆市森林生态系统水源涵养功能研究
- Title:
- Analysis on Water Conservation Capacity of Forest Ecosystem in Chongqing
- 分类号:
- S715
- 摘要:
- 以重庆市为研究区域，根据该区自然地理环境条件的差别，利用2001—2010年重庆市MODIS植被类型数据，划分为针叶林、阔叶林、针阔混交林、灌木林、草地、湿地和5个森林生态系统类型区域，利用年降水量，林冠截留率数据，结合气象观测数据，计量和评述了该地区2001—2010年间森林生态系统水源涵养能力及其变化。结果表明：总体格局空间上，东部巫溪、城口、酉阳等地区由于植被状况良好，其森林生态系统水源涵养能力较强；中西部渝中区、沙坪坝区、大足县等地区由于植被状况较差，是森林生态系统水源涵养能力的薄弱环节；东部森林生态系统水源涵养能力强，西部弱，巫溪县最强，渝中区最弱；其中渝东北生态涵养发展区森林生态系统水源涵养能力最强，都市功能核心区森林生态系统水源涵养能力最弱；三峡库区森林生态系统水源涵养能力较强，平均为61亿m3；2001—2010年，重庆市森林生态系统水源涵养量呈逐渐上升的趋势，但受降水影响，各年差异明显，多年平均水源涵养量为103亿m3，2010年森林生态系统水源涵养量最高为129亿m3，2006年森林生态系统水源涵养量最低为73亿m3。
- Abstract:
- In this paper, Chongqing was selected as research area. According to the difference of natural environment and the main MODIS vegetation type data of Chongqing from 2001 to 2010, forests in Chongqing were divided into coniferous forest, broadleaf forest, mixed conifer-broadleaf forest, shrubbery, meadow, wetland and five corresponding types of forest ecosystems. And then based on relevant indicators such as annual rainfall and crown cover rate of forest data, the water conservation capacity for different types of forest ecosystems and its development trends in the past ten years were calculated and assessed. The water conservation capacity of forest ecosystems is strong in east and weak in west, is the strongest in Wuxi County, and is the weakest in Yuzhong. Besides, the water conservation capacity of forest ecosystems is the strongest in the ecological conservation area in the northeast of Chongqing and is the weakest in the core area of city functions. The water conservation capacity of forest ecosystems in Three Gorges Reservoir is very strong, reaching up to 61 hundred million cubic meters in average. Overall, the Chongqing Municipal water conservation forest ecosystem in the decade showed a gradual upward trend, but was influenced by precipitation, significantly different each year, The annual average amount of water conserved through forest ecosystems within this region is about 103 hundred million cubic meters. The amount of water conservation for different types of forest ecosystems was the highest(129 hundred million cubic meters) in 2010 and the lowest(73 hundred million cubic meters) in 2006.
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备注/Memo
收稿日期:2014-10-20;改回日期:2014-10-30。
基金项目:国家自然科学基金（41261038，41201546）；国家十二五科技支撑计划（2014BAB03B001）；贵州省重大科技专项（黔科合重大专项字[2012]6015号）；贵州省科技人才创新团队计划（黔科合人才团队[2014]4014）
作者简介:李莉(1991-),女,甘肃兰州人,硕士研究生,主要从事人文地理区域规划。E-mail:792635211@qq.com
通讯作者:苏维词(1965-),男(苗族),湖南绥宁人,教授,研究员,主要从事城市地理生态环境与可持续发展研究。E-mail:suweici@sina.com