中国北方农牧交错带典型固沙植被种植适宜性研究OA
Study on the suitability of typical sand-fixing vegetation distribution in the agro-pastoral ecotone of Northern China
为探究中国北方农牧交错带固沙植物的分布适宜性及其土壤水分植被承载力,选取3种乔木樟子松(Pinus sylvestris var.mongholica)、旱柳(Salix matsudna Koidz.)、沙枣(Elaeagnus angustifolia L.)和3 种灌木梭梭(Haloxylon ammodendron(C.A.Mey.)Bunge)、沙棘(Hippophae rhamnoides L.)、柠条锦鸡儿(Caragana korshinskii Kom.)为研究对象,结合28个环境因子,采用最大熵模型(MaxEnt),评估上述固沙植物的空间分布适宜性,并基于水分限制条件,采用承载力模型量化适宜区内各植物种的可承载阈值.结果表明:固沙植物适生区空间分异显著.其中:沙棘、旱柳和柠条锦鸡儿适生范围较广,适生区所占比例均高于50％,在区域东中西均有分布;樟子松和沙枣适生范围次之,主要分布在研究区西部和中部;而梭梭适生范围仅占区域面积四分之一,主要分布在区域西部.土壤水分植被承载力分析显示研究区内的固沙植物植被承载力分别为:樟子松,5.66万～18.19万株/km2;旱柳,7.20万～19.26万株/km2;沙枣,19.20万～48.60万株/km2;梭梭,10.50万～38.75万株/km2;沙棘,27.49万～62.87万株/km2;柠条锦鸡儿,11.85万～37.73万株/km2.综上,本研究可为农牧交错带生态恢复和土地可持续管理提供基础理论支撑.
To investigate the distribution suitability of sand-fixing plants and their soil moisture vegetation carrying capacity in the agro-pastoral ecotone of Northern China,three tree species(Pinus sylvestris var.mongholica,Elaeagnus angustifolia L.,and Salix matsudana Koidz.)and three shrub species(Haloxylon ammodendron(C.A.Mey.)Bunge,Hippophae rhamnoides L.,and Caragana korshinskii Kom.)were selected as the research subjects.A total of 28 environmental factors and the Maximum Entropy model(MaxEnt)were combined to evaluate the spatial distribution suitability of the above-mentioned sand-fixing plants.This study focused primarily on water limitation conditions,and the carrying capacity model was used to quantify the carrying threshold of each plant species in the suitable area.The results show that the spatial variation of sand-fixing plant suitable areas is significant.Among them:The suitable ranges of Hippophae rhamnoides L.,Salix matsudana Koidz.and Caragana korshinskii Kom.are the widest,accounting for more than 50％,and the three plants are found in the eastern,central,and western regions of the area;Pinus sylvestris var.mongholica and Elaeagnus angustifolia L.have a relatively smaller suitable distribution range,are mainly found in the western and central parts of the study area;In contrast,Haloxylon ammodendron(C.A.Mey.)Bunge has a suitable distribution range that covers only a quarter of the regional area,mainly distributed in the western part of the region.According to the soil moisture vegetation carrying capacity model,the vegetation carrying capacity per km2of sand-fixing plants in the study area is as follows:Pinus sylvestris var.mongholica 56 600-181 900,Salix matsudana Koidz.72 000-192 600,Elaeagnus angustifolia L.192 100-486 000,Haloxylon ammodendron(C.A.Mey.)Bunge 105 000-387 500,Hippophae rhamnoides L.274 900-628 700 and Caragana korshinskii Kom.118 500-377 300 trees per km2.In conclusion,this study provided a theoretical basis for ecological restoration and sustainable land management in the agro-pastoral ecotone.
陶蕾;包岩峰;赵媛媛;丁国栋;于明含
北京林业大学水土保持学院/水土保持国家林业和草原局重点实验室,北京 100083自然资源部国土整治中心,北京 100035北京林业大学水土保持学院/水土保持国家林业和草原局重点实验室,北京 100083北京林业大学水土保持学院/水土保持国家林业和草原局重点实验室,北京 100083北京林业大学水土保持学院/水土保持国家林业和草原局重点实验室,北京 100083
资源环境
农牧交错带最大熵模型植被承载力适宜性评价固沙植被
the agro-pastoral ecotone of Northern ChinaMaxEntvegetation carrying capacitysuitability evaluationsand-fixing vegetation
《中国农业大学学报》 2026 (4)
59-72,14
内蒙古自治区科技计划(2023YFHH0068)国家自然科学基金项目(U23A2014,M2242005)中央高校基本科研业务费专项(FTYX202526,FTYX202528,FTYX202533)
评论