[1]龚顺清,陈奇伯,黄新会,等.多年连续计划烧除对云南松林坡面水土流失的影响[J].水土保持研究,2022,29(03):18-24.
　GONG Shunqing,CHEN Qibo,HUANG Xinhui,et al.Prescribed Burning Effects on Slope Runoff and Soil Loss in a Pinus yunnanensis Forest of Yunnan[J].Research of Soil and Water Conservation,2022,29(03):18-24.
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多年连续计划烧除对云南松林坡面水土流失的影响

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 29 期数: 2022年03期 页码: 18-24 栏目: 出版日期: 2022-04-20
Title:
Prescribed Burning Effects on Slope Runoff and Soil Loss in a Pinus yunnanensis Forest of Yunnan
文章编号:
1005-3409(2022)03-0018-07
作者:
龚顺清1, 陈奇伯1,2, 黄新会1,2, 杨建光3, 黎建强1,2, 钱 靖4
(1.西南林业大学 生态与环境学院, 昆明 650224; 2.西南林业大学 石漠化研究院, 昆明 650224; 3.新平县林业和草原局, 云南 新平 653499; 4.新平县气象局, 云南 新平 653499)
Author(s):
GONG Shunqing1, CHEN Qibo1,2, HUANG Xinhui1,2, YANG Jianguang3, LI Jianqiang1,2, QIAN Jing4
(1.School of Ecology and Environment, Southwest Forestry University, 650224 Kunming, China; 2.Research Institute of Rocky Desertification, Southwest Forestry University, Kunming 650224, China; 3.Xinping Forestry and Grassland Bureau, Xinping, Yunnan 653499, China; 4.Xinping Meteorological Bureau, Xinping, Yunnan 653499, China)
关键词:
计划烧除;  云南松林;  径流;  泥沙
Keywords:
prescribed burning;  Pinus yunnanensis forests;  runoff;  sediment yield
分类号:
157.1
文献标志码:
A
摘要:
为探讨多年连续计划烧除对云南松林坡面水土流失的影响,科学评价云南松林计划烧除后森林生态系统的服务功能,2019年在滇中新平县照壁山云南松林设置计划烧除区域和未烧除区域的径流小区,对降雨及产流产沙变化进行了定位观测,建立了降雨、径流和泥沙的数值关系,结果表明:(1)2019年研究区降雨量为568.6 mm,仅为多年平均降雨量939.79 mm的60.5%,降雨主要集中雨季5—10月,雨季降雨量占年降雨总量的73.8%。雨季降雨51场次,其中产流降雨28场,占雨季降雨总量的93.7%。(2)多年连续计划烧除增强了降雨转化为林地坡面径流的能力,且小雨量级最能凸显计划烧除促进林地坡面径流泥沙的产生。(3)计划烧除小区和未烧除小区的径流主要与降雨量显著相关,计划烧除小区的径流与降雨呈幂函数关系,未烧除小区的径流与降雨呈多项式关系。(4)计划烧除小区和未烧除小区的泥沙均与降雨量、径流量显著相关,且泥沙与降雨、径流的关系均呈幂函数形式。表明多年连续计划烧除改变林地水文特征,提高了降雨转化为林地坡面径流的能力,提高了径流挟带泥沙的能力,才使计划烧除林地的径流泥沙比未烧除林地多。
Abstract:
In order to explore effects of prescribed burning on runoff and soil loss on slopes of Pinus yunnanensis forests, burned and unburned runoff plots were set up to observe runoff and sediment yield of Pinus yunnanensis forests on Zhaobi Mountain of Xinping County, Yunnan Province in 2019. Relationships among rainfall, runoff and sediment were analyzed. The results showed that:(1)rainfall in 2019 was 568.6 mm, which was only 60.5% of the average annual rainfall of 939.79 mm; rainfall mainly occurred in rainy seasons from May to October, accounting for 73.8% of the total annual rainfall; there were 51 rainfall events in this season, of which 28 were runoff producing, accounting for 93.7% of the total rainy-season rainfalls;(2)continuous prescribed burning for more than 20 years enhanced converting rainfall into slope runoff, and under light rains burning produced the most amount of soil loss;(3)runoff of burned and unburned plots was significantly correlated with rainfall by power function on burned plots and polynomial function on unburned plots, respectively;(4)sediment on both burned and unburned plots was significantly related to rainfall and runoff by power function. These results showed that many years of burning had changed the hydrological characteristics of forestland, improved the transforming ability from rainfall to slope runoff, and increased the sediment carrying capacity of runoff, so that the prescribed burning land had more runoff and sediment than unburned land.

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备注/Memo

收稿日期:2021-04-19 修回日期:2021-05-19
资助项目:国家自然科学基金项目“云南松林枯落物计划烧除对坡面产流产沙的影响机理研究”(31860212)
第一作者:龚顺清(1995—),男,云南省泸西县人,硕士研究生,主要研究方向:水土保持研究。E-mail:2253481268@qq.com
通信作者:陈奇伯(1965—),男,甘肃省通渭县人,博士,教授,主要研究方向:从事土壤侵蚀和恢复生态学研究。E-mail:chengqb@swfu.edu.cn

更新日期/Last Update: 2022-04-20