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中国草学会草坪专业委员会第六届全国会员代表大会及第九次学术研讨会

作者： Lou Zhi-ping, XU Li-gen, Lou Cheng-cheng, TAN Yi-fan, HUANG Cheng-yi Shengzhou Lou Zhiping Spoiled Planting System Engineering Res. Inst., Zhejiang 312451,China College of Life Sciences, Zhejiang University Hangzhou, 310012,China Shenzhen Gardening Sci.Res. Ins. Shenzhen, 518003,China Shenzhen Yihe Meidi Ecological Environ. Co., LTD. Shenzhen, 518002,China.

Non-woven cloth can be applied to projects of roof afforestation, vertical planting, and ecological environment restoration of slopes. As a material for protection of matrix, non-woven cloth can be used to prevent the wind erosion, splash erosion, and ravine erosion of matrix surface layers, thus stopping the loss of matrix. Non-woven cloth can also absorb and preserve rainwater fast and provide more water for the matrix layers so as to achieve excellent effects in water and soil conservation. Meanwhile, due to the capillary functions, non-woven cloth can absorb water in three dimensions. So, the application of non-woven cloth can further improve the quality of projects of roof afforestation, slope afforestation, vertical planting, and ecological environment restoration of barren land.

关键词： Non-woven cloth Prevent erosion, Ecological environment restoration barren land

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An insight to calculate soil conservation service

引用

Geography and Sustainability 2022年第3期3卷 237-245页

作者： Shaojuan Lu Xingwu Duan Shengzhao Wei Honghong Lin Institute of International Rivers and Eco-security Yunnan UniversityKunming 650091

Quantifying soil conservation service is critical for sustainable land management. However, the traditional algo-rithm includes a gap between barren land and real soil erosion (BSERef), and its paradox is that a mass of barrenland rarely exists in ecologically adaptable areas with fertile soils, which might overestimate soil conservationservice. This study suggests a practical algorithm to effectively evaluate soil conservation service of differentecosystems. We propose a new algorithm based on the difference between cropland without control practicesand real soil erosion (CSERef), which is compared with the BSERef algorithm. Our results show that: (1) a nearlyfive times smaller mean soil conservation amount of cropland occurred in the CSERef algorithm (3.76×106 t·yr–1)than in the BSERef algorithm (20.04×106 t·yr–1);(2) land use has higher explanatory power for the spatial dif-ferentiation of soil conservation rate in the CSERef algorithm (15.93% – 46.34%) than in the BSERef algorithm(5.95% – 44.49%). Our results demonstrate that the BSERef algorithm overestimates the soil conservation serviceof cropland in ecologically adaptable areas, whereas the CSERef algorithm can effectively assess the influence ofland use change induced by anthropogenic activities on soil conservation service. Furthermore, we develop anassessment framework in terms of land use classification system following the Chinese Academy of Sciences. Theframework considers that for water bodies, there is no soil conservation service;for non-ecologically adaptable ar-eas (unused land) with vast barren lands and vegetation cover below 5%, the BSERef algorithm is recommended;the CSERef algorithm is suggested to use in ecologically adaptable areas (including woodland, grassland, crop-land and construction land). This assessment framework can provide scientific assistance for decision-makers toformulate strategies for sustainable land management.

关键词： Soil conservation service Soil erosion Cropland barren land Algorithm

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