喀斯特槽谷区生态退化与修复专题导读

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英文篇名：The Eco-degradation and restoration in Karst Trough Valley Area: An introduction 作者：蒋勇军 英文作者：JIANG Yongjun;School of Geographical Sciences & Chongqing Key Laboratory of Karst Environment, Southwest University; 关键词：喀斯特槽谷区 ; 生态退化 ; 生态修复 ; 生态服务功能 英文关键词：Karst trough valley area;;Ecological degradation;;Ecological restoration;;Ecological service functions 中文刊名：生态学报 英文刊名：Acta Ecologica Sinica 机构：西南大学地理科学学院,岩溶环境重庆市重点实验室; 出版日期：2019-08-23 出版单位：生态学报 年：2019 期：16 语种：中文; 页：315-317 页数：3 CN：11-2031/Q ISSN：1000-0933 分类号：X171.4

摘要

在国家重点研发计划项目——"喀斯特槽谷区土地石漠化过程及综合治理技术研发与示范(2016YFC0502300)"的支持下,经过项目组全体成员三年的共同努力,在喀斯特槽谷区生态退化与修复方面取得了一些重要进展。主要有:(1)2000—2015年槽谷区土壤侵蚀总量逐年减少,年平均侵蚀模数逐年降低,槽谷区植被覆盖明显提高;(2)拉巴豆地埂篱根土复合体不仅能有效提高喀斯特土壤的粒径大小和增强土体的抗剪/冲性能,并且能够利用大气N_2合成植物生长所需的氮肥,从而提高土壤肥力,可望实现石漠化治理中生态效应和经济效应的双赢;(3)喀斯特槽谷区隧道建设改变了地下水流场并降低了地下水位,进而降低了土壤微生物丰度和多样性,而增加了适应干旱的微生物种群,并导致土壤质量的降低;隧道建设加速了坡面产流和土壤流失,加剧了土地石漠化,从而导致生态退化;(4)随着槽谷区退化生态系统的恢复,生态系统的生态服务功能得到提升。
        Supported by the national key research and development program of China, entitled "Research and development of comprehensive rehabilitation measures for land rocky desertification in karst trough valley area(2016YFC0502300)", some important progress has been made in ecological degradation and restoration in karst trough valley area after three years′ joint efforts of all members of the project team. The most important progress includes:(1) From 2000 to 2015, the total amount of soil erosion and the annual average erosion modulus decreased year by year, meanwhile the vegetation coverage increased significantly in the trough valley area;(2) Root and root-soil matrix of Dolichos lablab L. hedgerows can not only effectively improve the particle size of karst soil, soil anti-scourability and soil shear strength, but also Dolichos lablab L. can use the atmospheric N_2 to synthesize nitrogen fertilizer for plant growth and then improve soil fertility, which is expected to achieve a win-win situation of ecological and economic effects during the rocky desertification rehabilitation;(3) Tunnels excavation in karst trough valley area altered the natural hydrogeological flow system and lowered groundwater level, and consequently reduced the relative abundance and diversity of soil microbial species, but increased the microbial population adapted to drought, leading to the decrease of soil quality. Tunnel construction also accelerated slope runoff and soil erosion, leading to aggravate land rocky desertification, and consequently led to ecological degradation in karst trough valley area;(4) With the restoration of degraded karst ecosystem, the ecological service functions of karst ecosystem have been improved in karst trough valley area.

引文

[1] 曹建华,袁道先.受地质条件制约的中国两南岩溶生态系统.北京:地质出版社,2005.
    [2] 蒋勇军,刘秀明,何师意,何丙辉,谢建平,罗维均,白晓永,肖琼.喀斯特槽谷区土地石漠化与综合治理技术研发.生态学报,2016,36(22):7092-7097.
    [3] 王正雄,蒋勇军,张远嘱,段世辉,刘九缠,曾泽,曾思博.基于GIS与地理探测器的岩溶槽谷石漠化空间分布及驱动因素分析.地理学报,2019,74(5):1025-1039.
    [4] 操玥,王世杰,白晓永,李汇文,陈飞,王明明,吴路华,许燕,李琴,田诗琪,杨钰杰,李朝君,胡泽银,邓元红,路茜,习慧鹏,陈欢,王金凤,冉晨,罗旭玲.喀斯特槽谷区土壤侵蚀时空演变过程分析及未来情景模拟.生态学报,2019,39 (16):6061-6074.
    [5] 吴泽,蒋勇军,姜光辉,王正雄,贺秋芳,白莹.中梁山岩溶槽谷区不同土地利用方式坡地产流规律.生态学报,2019,(16):6072-6082.
    [6] 王明明,王世杰,白晓永,李世杰,李汇文,操玥,习慧鹏.典型小流域喀斯特石漠化演变特征及其关键表征因子与驱动因素分析.生态学报,2019,39(16):6083-6097.
    [7] 张瑞,杨勋林,刘秀明,殷建军,刘睿恺,王宝艳.渝东南近100年石笋灰度变化及气候环境意义.生态学报,2019,39(16):6098-6106.
    [8] 贾洪杰,甘凤玲,李振轮,黄雪娇,冯密,冯适,毛鑫羽.岩层倾向对南方喀斯特地区坡耕地土壤理化性质的影响.生态学报,2019,39(16):6107-6113.
    [9] 唐菡,谌芸,刘枭宏,何丙辉,李勇,强娇娇,李铁.喀斯特坡地拉巴豆地埂篱根及根-土复合体力学特性研究.生态学报,2019,39(16):6114-6125.
    [10] 张远瞩,蒋勇军,李勇,王正雄,段世辉,吴韦,彭学义,王冬.隧道工程对喀斯特槽谷区坡面产流及土壤侵蚀的影响.生态学报,2019,39(16):6126-6135.
    [11] 王家楠,蒋勇军,贺秋芳,范佳鑫,何瑞亮,吴超.中梁山岩溶槽谷区荒草地土壤微生物群落对隧道建设的响应.生态学报,2019,39 (16)(16):6136-6145.
    [12] 吴韦,贾亚男,蒋勇军,彭学义,段世辉,刘九缠,王正雄,卫敏洁.典型岩溶槽谷区土壤CO2浓度变化对隧道建设的响应研究——以重庆市中梁山岩溶槽谷为例.生态学报,2019,39(16):6146-6157.
    [13] 李汇文,王世杰,白晓永,操玥,田义超,罗光杰,陈飞,李琴,吴路华,王金凤,王明明,田诗琪,邓元红,胡泽银,杨钰杰,李朝君,路茜,习慧鹏,陈欢,冉晨,罗旭玲.气候变化及生态恢复对喀斯特槽谷碳酸盐岩风化碳汇的影响评估.生态学报,2019,39(16):6158-6173.