Human activities significantly alter ecosystems and their services; however, quantifying the impact of human activities on ecosystems has been a great challenge in ecosystem management. We used the Universal Soil Loss...Human activities significantly alter ecosystems and their services; however, quantifying the impact of human activities on ecosystems has been a great challenge in ecosystem management. We used the Universal Soil Loss Equation and county-level socioeconomic data to assess the changes in the ecosystem service of soil conservation between 2000 and 2010, and to analyze its spatial characteristics and driving factors in the southwestern China. The results showed that cropland in the southwestern China decreased by 3.74%, while urban land, forest, and grassland areas increased by 46.78%, 0.86%, and 1.12%, respectively. The soil conservation increased by 1.88 × 10^(11) kg, with deterioration only in some local areas. The improved and the degraded areas accounted for 6.41% and 2.44% of the total land area, respectively. Implementation of the Sloping Land Conversion Program and urbanization explained 57.80% and 23.90% of the variation in the soil conservation change, respectively, and were found to be the main factors enhancing soil conservation. The 2008 Wenchuan earthquake was one of the factors that led to the degradation of soil conservation. Furthermore, industrial adjustment, by increasing shares of Industry and Service and reducing those of Agriculture, has also promoted soil conservation. Our results quantitatively showed and emphasized the contributions to soil conservation improvement made by implementing ecological restoration programs and promoting urbanization. Consequently, these results provide basic information to improve our understanding of the effects of ecological restoration programs, and help guide future sustainable urban development and regional industrial restructuring.展开更多
Characteristics of mine wastelands and mine slopes in Chenzhou area were analyzed, and it was proposed that mine wasteland and mine slope ecosystem can be restored by improving vegetation matrix, selecting scientifi c...Characteristics of mine wastelands and mine slopes in Chenzhou area were analyzed, and it was proposed that mine wasteland and mine slope ecosystem can be restored by improving vegetation matrix, selecting scientifi c vegetation restoration techniques, and combining different plant species.展开更多
粮食生产服务与土壤保持服务的供给矛盾是制约怒江流域可持续发展的一大阻碍。以流域中心的施甸县为例,使用均方根偏差(Root Mean Square Error, RMSE)方法评估了2000—2020年粮食生产和土壤保持服务权衡强度的空间特征变化。然后将202...粮食生产服务与土壤保持服务的供给矛盾是制约怒江流域可持续发展的一大阻碍。以流域中心的施甸县为例,使用均方根偏差(Root Mean Square Error, RMSE)方法评估了2000—2020年粮食生产和土壤保持服务权衡强度的空间特征变化。然后将2020年作为基准年,以坡耕地生态恢复作为决策变量,使用多目标线性规划提取了高生态恢复优先的区域,进而识别了权衡强度与恢复潜力的空间分布异同。研究结果表明,(1)两项生态系统服务权衡的空间分异明显,研究期间权衡强度呈增加趋势,RMSE平均值由2000年的0.466增加至2020年的0.499;高权衡强度区域主要集中在研究区的低海拔坝区,而低权衡强度区域分布零散,且高/低权衡强度区域在空间上都表现出聚集的特征。(2)根据线性规划绘制的效率前沿曲线,在土壤保持服务收益达到13.35×10^(6)t hm^(-2)a^(-1)时需要转出3388.51hm^(2)坡耕地,同时粮食生产服务损失达9.59×10^(6)kg,而继续提升会显著增加成本。(3)各权衡强度等级坡耕地的生态恢复潜力为:中权衡>低权衡>高权衡,其中权衡强度在0.4—0.5区间的坡耕地最适宜进行生态恢复。这一研究结果可以为山地区域坡耕地利用模式提供参考,推进可持续发展目标的实现。展开更多
为掌握“双碳”背景下公路边坡生态修复的相关研究,文中基于CNKI、Web of Science等数据库及工程实践经验,从边坡恢复生态系统固碳潜力及其影响因素、植被对边坡工程稳定性的影响、边坡恢复生态系统稳定性的研究这几个方面,对边坡生态...为掌握“双碳”背景下公路边坡生态修复的相关研究,文中基于CNKI、Web of Science等数据库及工程实践经验,从边坡恢复生态系统固碳潜力及其影响因素、植被对边坡工程稳定性的影响、边坡恢复生态系统稳定性的研究这几个方面,对边坡生态修复领域研究现状进行了分析讨论,指出目前还存在边坡植被固碳尚且没有统一结论、缺乏生态系统长期稳定性的评价方法及数据等问题,并对此提出相关建议。展开更多
基金Under the auspices of National Key Technology Research and Development Program of China(No.2011BAC09B08)Special Issue of National Remote Sensing Survey and Assessment of Eco-Environment Change between 2000 and 2010(No.STSN-04-01)
文摘Human activities significantly alter ecosystems and their services; however, quantifying the impact of human activities on ecosystems has been a great challenge in ecosystem management. We used the Universal Soil Loss Equation and county-level socioeconomic data to assess the changes in the ecosystem service of soil conservation between 2000 and 2010, and to analyze its spatial characteristics and driving factors in the southwestern China. The results showed that cropland in the southwestern China decreased by 3.74%, while urban land, forest, and grassland areas increased by 46.78%, 0.86%, and 1.12%, respectively. The soil conservation increased by 1.88 × 10^(11) kg, with deterioration only in some local areas. The improved and the degraded areas accounted for 6.41% and 2.44% of the total land area, respectively. Implementation of the Sloping Land Conversion Program and urbanization explained 57.80% and 23.90% of the variation in the soil conservation change, respectively, and were found to be the main factors enhancing soil conservation. The 2008 Wenchuan earthquake was one of the factors that led to the degradation of soil conservation. Furthermore, industrial adjustment, by increasing shares of Industry and Service and reducing those of Agriculture, has also promoted soil conservation. Our results quantitatively showed and emphasized the contributions to soil conservation improvement made by implementing ecological restoration programs and promoting urbanization. Consequently, these results provide basic information to improve our understanding of the effects of ecological restoration programs, and help guide future sustainable urban development and regional industrial restructuring.
基金Sponsored by the Fund of Chenzhou Municipal Landscape Management Bureau
文摘Characteristics of mine wastelands and mine slopes in Chenzhou area were analyzed, and it was proposed that mine wasteland and mine slope ecosystem can be restored by improving vegetation matrix, selecting scientifi c vegetation restoration techniques, and combining different plant species.
文摘为掌握“双碳”背景下公路边坡生态修复的相关研究,文中基于CNKI、Web of Science等数据库及工程实践经验,从边坡恢复生态系统固碳潜力及其影响因素、植被对边坡工程稳定性的影响、边坡恢复生态系统稳定性的研究这几个方面,对边坡生态修复领域研究现状进行了分析讨论,指出目前还存在边坡植被固碳尚且没有统一结论、缺乏生态系统长期稳定性的评价方法及数据等问题,并对此提出相关建议。