基于物元模型的长江流域森林植被恢复适宜性评价  

Research on Suitability Evaluation of Forest Vegetation Restoration in Yangtze River Basin Based on Matter-element Model

作　　者：黄鑫 王娟 周志翔[1] 滕明君[1] 吴昌广[1] HUANG Xin;WANG Juan;ZHOU Zhixiang;TENG Mingjun;WU Changguang(College of Horticulture and Forestry Sciences / Hubei Engineering Technology Research Center for Forestry Information, Huazhong Agricultural University, Wuhan 430070, China)

机构地区：[1]华中农业大学园艺林学学院/湖北省林业信息工程技术研究中心,湖北武汉430070

出　　处：《林业调查规划》2018年第5期1-8,共8页Forest Inventory and Planning

基　　金：国家重点研发计划项目(2017YFC0505603;2016YFD60020104);国家科技支撑计划项目(2015BAD07B04);湖北秭归三峡库区森林生态系统国家定位观测研究站资助

摘　　要：以长江流域大于15°的坡耕地和裸地为评价对象,根据土地利用状况、植被景观格局和自然环境特点,建立了长江流域植被恢复适宜性评价指标体系,采用土地适宜性评价的物元模型分别对长江上游和中下游2个区域森林植被的恢复适宜性进行了评价,并在此基础上探讨森林植被恢复后的长江流域潜在森林植被格局。结果表明,长江流域适宜森林植被恢复的面积为54 103 km^2,占评价区域总面积的91.11%,主要分布在上游低海拔区域以及中下游地区;属于较适宜恢复等级的面积为2 945 km^2,占评价区域总面积的4.96%,分布在上游的山地和高山峡谷区;属于不适宜恢复等级的土地面积为2 336 km^2,占评价区域总面积的3.93%,主要分布在上游海拔4 000 m以上地区和高山峡谷区。采用价值当量法评估结果表明,森林植被恢复后长江流域生态系统服务功能价值将增加770.34亿元/a。Taking the slope ( > 15°) farmland and bare land in the Yangtze River Basin as the evalua- tion object, the indicators system of ecological suitability evaluation of the Yangtze River Basin for forest restoration was established based on the land use, vegetation landscape pattern and natural environmental features, and the matter-element model of land ecological suitability evaluation was used to evaluate the forest vegetation restoration suitability in two regions (the upper reaches, the middle and lower reaches) of the Yangtze River and discuss the potential pattern of forest vegetation restoration. The results showed that the most suitable region for forest vegetation restoration was 54103 km^2, which covered 91.11% of total area and mainly distributed in low altitude area in the upper reaches and the middle and lower reaches of the basin. The suitable regions for forest vegetation restoration was 2945 km^2 , which covered 4.96% of total area and mainly distributed in hilly area and high mountains and canyons in the upper reaches of the basin. The unsuitable regions for forest vegetation restoration was 2336 km^2, which covered 3.93 % of total area and mainly distributed in the area of 4000 meters above sea level and high mountains and canyons in the upper reaches of the basin. The Value Equivalent Method showed that the ecosystem services of the Yangtze River Basin would increase by 77. 034 billion yuan per year after the forest resto- ration.

关 键 词：长江流域 森林植被恢复 土地适宜性评价 物元模型 生态系统服务功能 森林植被格局 

分 类 号：S718.557[农业科学—林学] X171.4[环境科学与工程—环境科学]