Main Results of the Fourth Rocky Desertification Survey in Karst Area and Analysis of Rocky Desertification Control Situation

doi:10.13466/j.cnki.lyzygl.2023.03.002

Abstract

Abstract:

The fourth rocky desertification survey in Karst area was based on the result of the third national land survey,while taking 2021 as the base year to comprehensively investigate the condition and change of the rocky desertification land China.This paper briefly introduced the basic situation of the fourth rocky desertification survey,the present situation and dynamic change of rocky desertification land,as well as analyzed the current situation of rocky desertification control,and put forward countermeasures and suggestions.The results showed that,the rocky desertification land area was 7.223 million hm² by 2021.Compared with 2016,the net decrease of rocky desertification land area was 3.331 million hm²,while the average annual decrease was 0.666 million hm².The main results indicating that the rocky desertification land in China presents the overall evolution direction of "area decreasing,degree reduction and ecological condition being stable ".

Key words: karst area, rocky desertification, status, dynamic change

CLC Number:

NING Xiaobin, WU Xiebao, HUANG Junwei, WU Houjian, LIU Wei, PENG Xi. Main Results of the Fourth Rocky Desertification Survey in Karst Area and Analysis of Rocky Desertification Control Situation[J]. FOREST RESOURCES WANAGEMENT, 2023, (3): 9-14.

Figures/Tables 2

References 11

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石漠化程度	2016年		2021年		2016—2021年动态变化
石漠化程度	面积/万hm²	占比/%	面积/万hm²	占比/%	面积/万hm²	占比/%
总面积	1 007.0	100.0	673.9	100.0	-333.1
轻度	391.3	38.8	272.5	40.4	-118.8	1.6
中度	432.6	43.0	283.4	42.1	-149.2	-0.9
重度	166.2	16.5	112.0	16.6	-54.2	0.1
极重度	16.9	1.7	6.0	0.9	-10.9	-0.8

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