| 群落尺度植被水土保持功能评价模型的构建——以大别山北麓安徽省金寨县为例 |
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| 引用本文： | 张洪达,赵传普,戴玉婷,袁利,杨绮梦頔,吴傲,刘霞.群落尺度植被水土保持功能评价模型的构建——以大别山北麓安徽省金寨县为例[J].水土保持通报,2022,42(1):122-129. |
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| 作者姓名： | 张洪达 赵传普 戴玉婷 袁利 杨绮梦頔 吴傲 刘霞 |
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| 作者单位： | 南京林业大学 南方现代林业协同创新中心, 江苏省水土保持与生态修复重点实验室, 江苏 南京 210037;水利部 淮河水利委员会 淮河流域水土保持监测中心站, 安徽 蚌埠 233001 |
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| 基金项目： | 国家自然科学基金项目“坡式经济林地土壤水分运移动态及内在机理”(32071840),“沂蒙山区退耕坡地土壤结构与入渗动态及其分形学机理”(31070627); 水利部重点项目(SBJ2018010); 江苏省“333工程”科研项目(BRA2019069)。 |
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| 摘 要： | 目的]探索群落尺度植被水土保持功能评价模型,为大别山区植被水土保持与生态建设提供参考依据.方法]基于已有研究通过文献计量法、专家经验法筛选建立植被水土保持功能初选指标(包括植被类型、植被结构、地形等30项).通过野外调查获取指标实测值,利用随机森林法、决策树法分析、衡量各指标,以指标实测值与土壤侵蚀量建立多元逐步回...
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| 关 键 词： | 群落尺度 水土保持功能 随机森林 多元回归 大别山区 |
| 收稿时间： | 2021/8/1 0:00:00 |
| 修稿时间： | 2021/10/13 0:00:00 |
Construction of Evaluation Model for Soil and Water Conservation Function of Vegetation at Community Scale -Taking Jinzhai County, Anhui Province at Northern Foot of Dabie Mountains as an Example |
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| Zhang Hongd,Zhao Chuanpu,Dai Yuting,Yuan Li,Yang Qimengdi,Wu Ao,Liu Xia.Construction of Evaluation Model for Soil and Water Conservation Function of Vegetation at Community Scale -Taking Jinzhai County, Anhui Province at Northern Foot of Dabie Mountains as an Example[J].Bulletin of Soil and Water Conservation,2022,42(1):122-129. |
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| Authors: | Zhang Hongd Zhao Chuanpu Dai Yuting Yuan Li Yang Qimengdi Wu Ao Liu Xia |
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| Institution: | Collaborative Innovation Center of Sustainable Forestry in Southern China of Jiangsu Province, Jiangsu Provincial Key Lab of Soil Erosion and Ecological Restoration, Nanjing Forestry University, Nanjing, Jiangsu 210037, China;Monitoring Center Station of Soil and Water Conservation, Huaihe River Commission, Ministry of Water Resources, Bengbu, Anhui 233001, China |
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| Abstract: | Objetcive] An evaluation model for the soil and water conservation function of vegetation at community scale was explored in order to provide a reference for soil and water conservation and ecological construction of vegetation in the Dabie Mountains. Methods] Based on existing research, through the bibliometric method and expert experience method, the primary selection index for soil and water conservation function of vegetation was established, including 30 items characterizing vegetation type, vegetation structure, terrain, and so on. The measured values of the indicators were obtained through field investigation, and the indicators were analyzed and measured by the random forest method and the decision tree method. A multiple stepwise regression relationship between the measured values of the indicators and soil erosion was established to construct an evaluation model for soil and water conservation function of vegetation at community scale. Results] A global regression model based on a random forest (R2=0.71) was better than the local regression model based on a decision tree (R2=0.69). Based on the global regression model of random forest, an evaluation model which included slope, forest age, shrub coverage, grass coverage, and litter thickness was constructed. The soil conservation functions of vegetation in the study area followed the order of protection forest (0.705)> timber forest> (0.529) economic forest (0.513)> shrub-grass (0.457). Conclusion] In the evaluation of vegetation soil and water conservation function at community scale, the model constructed by random forest method has strong applicability, operability and is easy to grasp. |
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| Keywords: | community scale function of soil and water conservation random forest multiple regression Dabie Mountains area |
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